Onkyo Tx Sr304 Users Manual SR304_En

TX-SR304 to the manual e359d891-6d98-4a93-8785-a3e2a423283e

2015-01-24

: Onkyo Onkyo-Tx-Sr304-Users-Manual-233126 onkyo-tx-sr304-users-manual-233126 onkyo pdf

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TX-SR304_En.book Page 1 Tuesday, February 7, 2006 4:57 PM

Contents
Introduction ..................................... 2

AV Receiver

TX-SR304
TX-SR304E
TX-SR404
TX-SR8440

Connection .................................... 17

Turning On & First Time Setup..... 32

Basic Operation
Playing your AV components ....... 36
Using the Tuner............................ 38

Instruction Manual
Enjoying the Listening Modes ..... 45

Thank you for purchasing an Onkyo AV Receiver.
Please read this manual thoroughly before making
connections and plugging in the unit.
Following the instructions in this manual will enable
you to obtain optimum performance and listening
enjoyment from your new AV Receiver.
Please retain this manual for future reference.

Advanced Operation ..................... 48

Troubleshooting ............................ 55
Specifications................................ 58

TX-SR304_En.book Page 2 Tuesday, February 7, 2006 4:57 PM

WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS
TO RAIN OR MOISTURE.

CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). NO
USER-SERVICEABLE PARTS INSIDE. REFER
SERVICING
TO
QUALIFIED
SERVICE
PERSONNEL.

WARNING

AVIS

RISK OF ELECTRIC SHOCK
DO NOT OPEN

RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR

The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage” within
the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to
persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the appliance.

Important Safety Instructions
1.
2.
3.
4.
5.
6.
7.
8.

10.

11.
12.

13.
14.

Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding
type plug has two blades and a third grounding
prong. The wide blade or the third prong are provided for your safety. If the provided plug does not
fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
Only use attachments/accessories specified by the
manufacturer.
Use only with the cart, stand, PORTABLE CART WARNING
tripod, bracket, or table specified by the manufacturer, or
sold with the apparatus.
When a cart is used, use caution when moving the cart/
apparatus combination to
avoid injury from tip-over.
S3125A
Unplug this apparatus during lightning storms or
when unused for long periods of time.
Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate
normally, or has been dropped.

15. Damage Requiring Service
Unplug the apparatus from the wall outlet and refer
servicing to qualified service personnel under the
following conditions:
A. When the power-supply cord or plug is damaged,
B. If liquid has been spilled, or objects have fallen
into the apparatus,
C. If the apparatus has been exposed to rain or
water,
D. If the apparatus does not operate normally by
following the operating instructions. Adjust only
those controls that are covered by the operating
instructions as an improper adjustment of other
controls may result in damage and will often
require extensive work by a qualified technician
to restore the apparatus to its normal operation,
E. If the apparatus has been dropped or damaged in
any way, and
F. When the apparatus exhibits a distinct change in
performance this indicates a need for service.
16. Object and Liquid Entry
Never push objects of any kind into the apparatus
through openings as they may touch dangerous voltage points or short-out parts that could result in a
fire or electric shock.
The apparatus shall not be exposed to dripping or
splashing and no objects filled with liquids, such as
vases shall be placed on the apparatus.
Don’t put candles or other burning objects on top of
this unit.
17. Batteries
Always consider the environmental issues and follow local regulations when disposing of batteries.
18. If you install the apparatus in a built-in installation,
such as a bookcase or rack, ensure that there is adequate ventilation.
Leave 20 cm (8") of free space at the top and sides
and 10 cm (4") at the rear. The rear edge of the shelf
or board above the apparatus shall be set 10 cm (4")
away from the rear panel or wall, creating a flue-like
gap for warm air to escape.

TX-SR304_En.book Page 3 Tuesday, February 7, 2006 4:57 PM

Precautions
1. Recording Copyright—Unless it’s for personal use
only, recording copyrighted material is illegal without the permission of the copyright holder.
2. AC Fuse—The AC fuse inside the unit is not userserviceable. If you cannot turn on the unit, contact
your Onkyo dealer.
3. Care—Occasionally you should dust the unit all
over with a soft cloth. For stubborn stains, use a soft
cloth dampened with a weak solution of mild detergent and water. Dry the unit immediately afterwards
with a clean cloth. Don’t use abrasive cloths, thinners, alcohol, or other chemical solvents, because
they may damage the finish or remove the panel lettering.
4. Power
WARNING
BEFORE PLUGGING IN THE UNIT FOR THE
FIRST TIME, READ THE FOLLOWING SECTION CAREFULLY.
AC outlet voltages vary from country to country.
Make sure that the voltage in your area meets the
voltage requirements printed on the unit’s rear panel
(e.g., AC 230–240 V, 50 Hz or AC 120 V, 60 Hz).
Some models have a voltage selector switch for
compatibility with power systems around the world.
Before you plug in such a model, make sure that the
voltage selector is set to the correct voltage for your
area.
Pressing the [STANDBY/ON] button to select
Standby mode does not fully shutdown the unit. If
you do not intend to use the unit for an extended
period, remove the power cord from the AC outlet.
5. Never Touch this Unit with Wet Hands—Never
handle this unit or its power cord while your hands
are wet or damp. If water or any other liquid gets
inside this unit, have it checked by your Onkyo
dealer.
6. Handling Notes
• If you need to transport this unit, use the original
packaging to pack it how it was when you originally bought it.
• Do not leave rubber or plastic items on this unit
for a long time, because they may leave marks on
the case.
• This unit’s top and rear panels may get warm
after prolonged use. This is normal.
• If you do not use this unit for a long time, it may
not work properly the next time you turn it on, so
be sure to use it occasionally.

For U.S. models
FCC Information for User

CAUTION:
The user changes or modifications not expressly
approved by the party responsible for compliance could
void the user’s authority to operate the equipment.

NOTE:
This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and
receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

For Canadian Models
NOTE: THIS CLASS B DIGITAL APPARATUS
COMPLIES WITH CANADIAN ICES-003.
For models having a power cord with a polarized plug:
CAUTION: TO PREVENT ELECTRIC SHOCK,
MATCH WIDE BLADE OF PLUG TO WIDE SLOT,
FULLY INSERT.

Modèle pour les Canadien
REMARQUE: CET APPAREIL NUMÉRIQUE DE
LA CLASSE B EST CONFORME À LA NORME
NMB-003 DU CANADA.
Sur les modèles dont la fiche est polarisée:
ATTENTION: POUR ÉVITER LES CHOCS ÉLECTRIQUES, INTRODUIRE LA LAME LA PLUS
LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER
JUSQU’AU FOND.

TX-SR304_En.book Page 4 Tuesday, February 7, 2006 4:57 PM

Supplied Accessories

Precautions—Continued

Make sure you have the following accessories:

For British models
Replacement and mounting of an AC plug on the power
supply cord of this unit should be performed only by
qualified service personnel.

IMPORTANT

Surround Back
Right
Surround Back
Right
Zone 2
Right
Zone 2
Right

Center

Surround Back
Right
Surround Back
Right
Zone 2
Right
Zone 2
Right

Center

Surround
Right
Surround
Right

Surround Back
Left
Surround Back
Left
Zone 2
Left
Zone 2
Left

Center

Surround Back
Left
Surround Back
Left
Zone 2
Left
Zone 2
Left

Surround
Left
Surround
Left

Surround
Right
Surround
Right

Center

Front
Right
Front
Right
SP-B / Zone 2
Right
SP-B / Zone 2
Right

Surround
Left
Surround
Left

AM loop antenna

2
3

Speaker Cable

Speaker cable labels
* In catalogs and on packaging, the letter at the end of the
product name indicates the color. Specifications and operation are the same regardless of color.

For European Models
Declaration of Conformity
We, ONKYO EUROPE
ELECTRONICS GmbH
LIEGNITZERSTRASSE 6,
82194 GROEBENZELL,
GERMANY
declare in own responsibility, that the ONKYO product
described in this instruction manual is in compliance with the
corresponding
technical standards such as EN60065,
EN55013, EN55020 and EN61000-3-2, -3-3.
GROEBENZELL, GERMANY
K. MIYAGI

ONKYO EUROPE ELECTRONICS GmbH

Memory Backup
The AV receiver uses a battery-less memory backup
system in order to retain radio presets and other settings
when it’s unplugged or in the case of a power failure.
Although no batteries are required, the AV receiver
must be plugged into an AC outlet in order to charge the
backup system. Once it has been charged, the AV
receiver will retain the settings for several weeks,
although this depends on the environment and will be
shorter in humid climates.

Indoor FM antenna
(Connector type varies from country to country.)

Front
Left
Front
Left
SP-B / Zone 2
Left
SP-B / Zone 2
Left

The plug is fitted with an appropriate fuse. If the fuse
needs to be replaced, the replacement fuse must
approved by ASTA or BSI to BS1362 and have the same
ampere rating as that indicated on the plug. Check for
the ASTA mark or the BSI mark on the body of the fuse.
If the power cord’s plug is not suitable for your socket
outlets, cut it off and fit a suitable plug. Fit a suitable
fuse in the plug.

(American type shown)

Front
Right
Front
Right
SP-B / Zone 2
Right
SP-B / Zone 2
Right

IMPORTANT

Remote controller & two batteries (AA/R6)

Front
Left
Front
Left
SP-B / Zone 2
Left
SP-B / Zone 2
Left

The wires in the mains lead are coloured in accordance
with the following code:
Blue:
Neutral
Brown: Live
As the colours of the wires in the mains lead of this
apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as
follows:
The wire which is coloured blue must be connected to
the terminal which is marked with the letter N or
coloured black.
The wire which is coloured brown must be connected to
the terminal which is marked with the letter L or
coloured red.

TX-SR304_En.book Page 5 Tuesday, February 7, 2006 4:57 PM

Features
Amplification
• 65 W/channel into 6 ohms (20 Hz–20 kHz, 0.7%,
FTC)
• 90 W/channel into 6 ohms (1 kHz, DIN)
• 110 W/channel into 6 ohms (JEITA)
• Optimum Gain Volume Circuitry
• Massive High Current Power Supply (H.C.P.S.) transformer

Processing
Dolby*1 Digital and Dolby Pro Logic II
DTS and DTS Neo:6*2 5.1
CinemaFILTER
Non-Scaling Configuration
A-Form — Auto Format Sensing
192 kHz/24-bit D/A converters
Powerful and highly accurate Analog Devices 32-bit
DSP processing
• Double bass function
• Direct mode
•
•
•
•
•
•
•

Contents
Introduction
Important Safety Instructions.................2
Precautions ..............................................3
Supplied Accessories .............................4
Features....................................................5
Front & Rear Panels ................................6
Before Using the AV receiver................... 9
Remote Controller .................................10
Connection
Enjoying Home Theater ........................17
Connecting Your Speakers...................18
Connecting Antenna .............................20
Connecting Your Components .............. 22
Turning On & First Time Setup
Turning On .............................................32
First Time Setup ....................................33
Basic Operation

Connections
• HDTV-ready component video switching (3 inputs, 1
output)
• 3 digital inputs (2 optical, 1 coaxial, 3 assignable)
• Speaker A/B terminal
• Color-coded speaker terminal posts
• Color-coded 5.1 multichannel inputs and subwoofer
pre out

Playing Your AV Components..............36
Using the Tuner .....................................38
Common Functions...............................42
Enjoying the Listening Modes
Using the Listening Modes...................45
Advanced Operation

Miscellaneous
• Adjustable crossover (40/50/60/80/100/120/150/
200 Hz)
• Compatible with RI dock for the iPod
• Late night mode
• 3-Mode display dimmer
• Full-Function RI remote control

Adjusting the Listening Modes ............48
Recording...............................................50
Advanced Setup ....................................51
Troubleshooting .................................... 55
If you can’t resolve an issue, try resetting the AV
receiver by holding down the [VIDEO 1] button
and pressing the [STANDBY/ON] button.

Specifications........................................ 58

*1. Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are registered trademarks of Dolby Laboratories.
*2. “DTS” and “Neo:6” are trademarks of Digital Theater Systems, Inc.

TX-SR304_En.book Page 6 Tuesday, February 7, 2006 4:57 PM

Front & Rear Panels
Front Panel
North American and Asian Models

4 5 6 78

9J K

TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

DIMMER

RETURN

MEMORY TUNING MODE

SETUP

CLEAR

PHONES

N O

MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

European Models

9
TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR

PHONES

MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

For detailed information, see the pages in parentheses.

A STANDBY/ON button (32)
This button is used to set the AV receiver to On or
Standby.

B STANDBY indicator (32)
This indicator lights up when the AV receiver is in
Standby mode, and it flashes while a signal is being
received from the remote controller.

C Remote-control sensor (9)
This sensor receives control signals from the remote
controller.

D STEREO button (45)
This button is used to select the Stereo listening
mode.

E LISTENING MODE [ ]/[ ] buttons (45)
These buttons are used to select the listening modes.

TAPE

TUNER

F Display
See “Display” on page 7.

G DISPLAY button (37)
This button is used to display various information
about the currently selected input source.

H DIGITAL INPUT button (33, 53)
This button is used to assign the digital inputs and to
specify the format of digital input signals.

I DIMMER or RT/PTY/TP button (41, 42)
This button is used to adjust the display brightness.
On the European model, this is the RT/PTY/TP button, and it’s used with RDS (Radio Data System).
See “Using RDS (European models only)” on
page 40.

TX-SR304_En.book Page 7 Tuesday, February 7, 2006 4:57 PM

Front & Rear Panels—Continued
J MEMORY button (39)

N PHONES jack (42)

This button is used when storing or deleting radio
presets.

This 1/4-inch phone jack is for connecting a standard pair of stereo headphones for private listening.

K TUNING MODE button (38)

O SPEAKER A & B buttons (36)

This button is used to select the Auto or Manual tuning mode.

L Arrow/TUNING/PRESET & ENTER buttons

These buttons are used to turn speaker sets A and B
on or off.

P TONE, [–] & [+] buttons (42)

(34, 48, 51)
When the AM or FM input source is selected, the
TUNING [ ] [ ] buttons are used to tune the
tuner, and the PRESET [ ] [ ] buttons are used
to select radio presets (see pages 38, 39). When the
setup menus are used, they work as arrow buttons
and are used to select and set items. The ENTER
button is also used with the setup menus.

M MASTER VOLUME control (36)

These buttons are used to adjust the bass and treble.

Q Input selector buttons (36, 37)
These buttons are used to select from the following
input sources: MULTI CH, DVD, VIDEO 1/VCR,
VIDEO 2, VIDEO 3, TAPE, TUNER, or CD.
The [MULTI CH] button selects the DVD analog
multichannel input.

R RETURN button (34, 48, 51)
This button is used to return to the previously displayed setup menu.

This control is used to adjust the volume of the AV
receiver to MIN, 1 through 79, or MAX.

S SETUP button (34, 48, 51)
This button is used to access various settings.

Display

5
For detailed information, see the pages in parentheses.

1 A & B speaker indicators (17, 36)
Indicator A lights up when speaker set A is on. Indicator B lights up when speaker set B is on.

2 MUTING indicator (43)
This indicator flashes when the AV receiver is
muted.

3 Source/listening mode indicators (46, 53)
These indicators show the currently selected listening mode and digital audio format.

4 Tuning indicators
TUNED (38): This indicator lights up when the AV
receiver is tuned to a radio station.
AUTO (38): This indicator lights up when Auto
Tuning is selected and disappears when Manual
Tuning is selected.

6
RDS (European model only) (40): This indicator lights up when the AV Receiver is tuned to a
radio station that supports RDS (Radio Data System).
MEMORY (39): This indicator lights up when presetting radio stations.
FM STEREO (38): This indicator lights up when
the AV receiver is tuned to a stereo FM station.

5 SLEEP indicator (43)
This indicator lights up when the Sleep function has
been set.

6 Message area
This area of the display shows various information
about the currently selected source.

TX-SR304_En.book Page 8 Tuesday, February 7, 2006 4:57 PM

Front & Rear Panels—Continued
Rear Panel
1

9 J

4 5

A DIGITAL IN OPTICAL 1, 2 & COAXIAL
These optical and coaxial jacks can be used to connect a CD or DVD player and other components
with digital audio outputs.

B COMPONENT VIDEO
A DVD player, TV, or other component that supports component video can be connected here.

C AM ANTENNA
These push terminals are for connecting an AM
antenna.

D FM ANTENNA
This jack is for connecting an FM antenna.

E MONITOR OUT
The composite video output should be connected to
a video input on your TV or projector.

F FRONT SPEAKERS B
These push terminals are for connecting speaker
set B.

G FRONT SPEAKERS A, SURROUND
SPEAKERS & CENTER SPEAKER
These push terminals are for connecting speaker
set A.

I CD IN
These analog inputs can be used to connect a CD
player with analog outputs.

J TAPE IN/OUT
These analog inputs and outputs can be used to connect a cassette recorder, MiniDisc recorder, or other
recorder with analog inputs and outputs.

K VIDEO 1 IN/OUT, VIDEO 2 IN & VIDEO 3 IN
The VIDEO 1, composite video, and audio inputs
and outputs can be used to connect a VCR. The
VIDEO 2, VIDEO 3, composite video, and audio
inputs can be used to connect another video source
(e.g., cable TV, satellite TV, or a set-top box).

L DVD IN
The FRONT, SURROUND, CENTER, and SUBWOOFER jacks can be used to connect a component with an analog multichannel audio output, such
as a DVD player with a 5.1-channel analog output.
The composite video input should be connected to a
video output on the DVD player.

M SUBWOOFER PRE OUT
A powered subwoofer can be connected here.

H
This
(Remote Interactive) jack can be connected to the
jack on another Onkyo component. The AV receiver’s remote controller can then
be used to control that component.
To use
, you must make an analog audio connection (RCA) between the AV receiver and the other
component, even if they are connected digitally.
Note:
can only be used with Onkyo components.

See pages 17–31 for connection information.

TX-SR304_En.book Page 9 Tuesday, February 7, 2006 4:57 PM

Before Using the AV receiver
Installing the Batteries

To open the battery compartment, press
the small hollow and slide open the cover.

Using the Remote Controller
To use the remote controller, point it at the AV receiver’s
remote control sensor, as shown below.
Remote control sensor
AV receiver
STANDBY indicator

Insert the two supplied batteries (AA/R6)
in accordance with the polarity diagram
inside the battery compartment.

Slide the cover shut.

Approx. 16 ft.
(5 m)

Notes:
• The remote controller may not work reliably if the AV
receiver is subjected to bright light, such as direct sunlight or inverter-type fluorescent lights. Keep this in
mind when installing.
• If another remote controller of the same type is used in
the same room, or the AV receiver is installed close to
equipment that uses infrared rays, the remote controller may not work reliably.
• Don’t put anything, such as a book, on the remote controller, because the buttons may be pressed inadvertently, thereby draining the batteries.
• The remote controller may not work reliably if the AV
receiver is installed in a rack behind colored glass
doors. Keep this in mind when installing.
• The remote controller will not work if there’s an obstacle between it and the AV receiver’s remote control
sensor.

Notes:
• If the remote controller doesn’t work reliably, try
replacing the batteries.
• Don’t mix new and old batteries or different types of
batteries.
• If you intend not to use the remote controller for a long
time, remove the batteries to prevent damage from
leakage or corrosion.
• Expired batteries should be removed as soon as possible to prevent damage from leakage or corrosion.

TX-SR304_En.book Page 10 Tuesday, February 7, 2006 4:57 PM

Remote Controller
How to Use the Remote Controller
Including the AV receiver, the remote controller can be
used to control up to six different components. The
remote controller has a specific operating mode for use
with each type of component. Modes are selected by
using the five REMOTE MODE buttons.
■ RECEIVER/TAPE Mode
In RECEIVER/TAPE mode, you can control
the AV receiver and an Onkyo cassette
recorder connected via
.
■ DVD, CD, MD, CDR & HDD Modes
With these modes, you can control an
Onkyo DVD player and
CD/MD/CDR/HDD player/recorder.

RECEIVER Mode
RECEIVER mode is used to control the AV receiver.
To set the remote controller to RECEIVER mode,
press the [RECEIVER] REMOTE MODE button.

RECEIVER

ON/STANDBY

RECEIVER

REMOTE MODE

RECEIVER

2
DVD

DVD

TAPE

CD
MD

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

CDR

HDD

CDR
HDD

Use the REMOTE MODE buttons to select
a mode.

Use the buttons supported by that mode
to control the component.
RECEIVER mode: see page 10
DVD mode: see page 12
CD mode: see page 13
MD/CDR mode: see page 14
HDD mode: see page 15
TAPE mode: see page 16

DISC
ALBUM

GUIDE
TOP MENU

PREVIOUS
MENU

SP A / B

MUTING

ENTER
PLAYLIST

PLAYLIST

8
RETURN

9
J

SETUP

LISTENING MODE
STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

PLAY MODE

DISPLAY

RC-645S

N
O

6
7

Note:
Some of the remote controller operations described in
this manual may not work as expected with other components.

VOL

Q
R

TX-SR304_En.book Page 11 Tuesday, February 7, 2006 4:57 PM

Remote Controller—Continued
For detailed information, see the pages in parentheses.

O MUTING button (43)
This button is used to mute the AV receiver.

A ON/STANDBY button (32)

P SETUP button (34, 48, 51)

This button is used to set the AV receiver to On or
Standby.
B INPUT SELECTOR buttons (36)
These buttons are used to select the input sources.

Q CINE FLTR button (49)

C MULTI CH button (37)

R L NIGHT button (49)

This button is used to select the multichannel DVD
input.

This button is used to access various settings.
This button is used to set the CinemaFILTER function.
This button is used to set the Late Night function.

D DIMMER button (42)
This button is used to adjust the display brightness.
E CH +/– button (39)
This button is used to select radio presets.
F SP A/B button (36)
This button is used to turn speaker sets A and B on
or off.

G Arrow [ ]/[ ]/[ ]/[ ] & ENTER buttons
(34, 48, 51)
These buttons are used to select and adjust settings.
H RETURN button (34, 48, 51)
This button is used to return to the previous display
when changing settings.
I LISTENING MODE buttons (45)
These buttons can be used to select listening modes
regardless of the currently selected remote controller mode.
STEREO button
This button selects the Stereo listening mode.
SURROUND button
This button selects the Dolby and DTS listening
modes.
[ ]/[ ] buttons
These buttons can be used to select any of the available listening modes.

J TEST TONE, CH SEL, LEVEL- & LEVEL+
buttons (35, 44, 53)
These buttons are used to adjust the level of each
speaker.

K DISPLAY button (37)
This button is used to display various information
about the currently selected input source.
L REMOTE MODE buttons (10)
These buttons are used to select the remote controller modes. When you press a button on the remote
controller, the REMOTE MODE button for the currently selected mode lights up.

M SLEEP button (43)
This button is used to set the Sleep function.

N VOL [ ]/[ ] button (36)
This button can be used to adjust the volume of the
AV receiver regardless of the currently selected
remote controller mode.

TX-SR304_En.book Page 12 Tuesday, February 7, 2006 4:57 PM

Remote Controller—Continued
A ON/STANDBY button

DVD Mode

This button sets the DVD player to On or Standby.

To select your DVD player as the input source, press:
RECEIVER

6
DVD

B Number buttons
These buttons are used to enter title, chapter, and
track numbers and to enter times for locating specific points in time.

C DISC +/– button
This button selects discs on a DVD changer.

D TOP MENU button
To set the remote controller to DVD mode, press the
[DVD] REMOTE MODE button.

This button is used to select a DVD’s top menu.

E Arrow [ ]/[ ]/[ ]/[ ] & ENTER buttons
These buttons are used to navigate DVD menus and
the DVD player’s onscreen setup menus.

F RETURN button
ON/STANDBY

REMOTE MODE

RECEIVER

DVD

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

This button is used to exit the DVD player’s
onscreen setup menu and to restart menu playback.

G Playback buttons
From left to right: Pause, Play, Stop, Fast Reverse,
Fast Forward, Previous, and Next.

H SUBTITLE button
This button is used to select subtitles.

CDR

I AUDIO button
HDD

J DISPLAY button

VOL

GUIDE
TOP MENU

PREVIOUS
MENU

SP A / B

MUTING

This button selects foreign language soundtracks
and audio formats (e.g., Dolby Digital or DTS).

This button is used to display information about the
current disc, title, chapter, or track on the DVD
player’s display, including the elapsed time, remaining time, total time, and so on.

K CLR button

ENTER
PLAYLIST

PLAYLIST

6
RETURN

SETUP

This button is used to cancel functions and to clear
entered numbers.

L MENU button
This button is used to display a DVD’s menu.

M SETUP button

This button is used to access the DVD player’s
onscreen setup menus.
LISTENING MODE
STEREO

SURROUND

8
9

AUDIO SUBTITLE RANDOM REPEAT

DISPLAY

TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

N
O

N RANDOM button
This button is used with the random playback function.

O REPEAT button

PLAY MODE

This button is used to set the repeat playback functions.

P PLAY MODE button
RC-645S

This button is used to select play modes on a component with selectable play modes.

TX-SR304_En.book Page 13 Tuesday, February 7, 2006 4:57 PM

Remote Controller—Continued
A ON/STANDBY button

CD Mode

This button sets the CD player to On or Standby.

To select your CD player as the input source, press:
RECEIVER

B Number buttons
These buttons are used to enter track numbers and
to enter times for locating specific points in time.

C DISC +/– button

This button selects discs on a CD changer.

D Playback buttons
To set the remote controller to CD mode, press the
[CD] REMOTE MODE button.

From left to right: Pause, Play, Stop, Fast Reverse,
Fast Forward, Previous and Next.

E DISPLAY button
This button is used to display information about the
current disc or track on the CD player’s display,
including the elapsed time, remaining time, total
time, and so on.

ON/STANDBY

F CLR button

REMOTE MODE

RECEIVER

This button is used to cancel functions and to clear
entered numbers.

DVD

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

This button is used with the random playback function.

H REPEAT button

CDR

HDD

VOL

✽

GUIDE
TOP MENU

PREVIOUS
MENU

SP A / B

MUTING

G RANDOM button

This button is used to set the repeat playback functions.
✽ The VOL [ ]/[ ] and LISTENING MODE buttons work the same as for RECEIVER mode.

ENTER
PLAYLIST

PLAYLIST

RETURN

SETUP

4
✽

LISTENING MODE
STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

PLAY MODE
DISPLAY

7
8

RC-645S

TX-SR304_En.book Page 14 Tuesday, February 7, 2006 4:57 PM

Remote Controller—Continued
A ON/STANDBY button

MD, & CDR Mode

This button sets the MD/CD recorder to On or
Standby.

To select your MiniDisc or CD recorder as the input
source, press:
RECEIVER

MD or CD recorder

7
TAPE

B Number buttons
These buttons are used to enter track numbers and
to enter times for locating specific points in time.
The [+10] button is used to enter numbers above 10.

C Playback buttons
* You must change the Input Display (see page 33).

From left to right: Pause, Play, Stop, Fast Reverse,
Fast Forward, Previous and Next.

D DISPLAY button
To set the remote controller to MD or CDR mode,
press the [MD] or [CDR] REMOTE MODE button.

This button is used to display information about the
current disc or track on the MD/CD recorder’s display, including the elapsed time, remaining time,
total time, and so on.

E CLR button
ON/STANDBY

This button is used to cancel functions and to clear
entered numbers.

REMOTE MODE

RECEIVER

DVD

F RANDOM button

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

CDR

G REPEAT button
CDR

HDD

5
VOL

GUIDE
TOP MENU

PREVIOUS
MENU

SP A / B

MUTING

✽

PLAYLIST

RETURN

SETUP

3
✽

LISTENING MODE
STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

8
RC-645S

6
7

PLAY MODE
DISPLAY

This button is used to set the repeat playback functions.

H PLAY MODE button
This button is used to select play modes on a component with selectable play modes.

✽ The VOL [ ]/[ ] and LISTENING MODE buttons work the same as for RECEIVER mode.

ENTER
PLAYLIST

This button is used with the random playback function.

TX-SR304_En.book Page 15 Tuesday, February 7, 2006 4:57 PM

Remote Controller—Continued
A ON/STANDBY button

HDD Mode

This button sets the HDD component to On or
Standby.

To select your HDD component as the input source,
press:
RECEIVER

This button selects the next or previous album on an
HDD component.

C PLAYLIST [

TAPE

B ALBUM +/– button

* You must change the Input Display (see page 33).

To set the remote controller to HDD mode, press the
[HDD] REMOTE MODE button.

]/[ ] buttons
These buttons select the previous or next playlist on
the HDD component.

D Playback buttons
From left to right: Pause, Play, Stop, Fast Reverse,
Fast Forward, Previous and Next.

E DISPLAY button
This button turns on the HDD component’s display
for 30 seconds.

F MENU, ENTER, and Up and Down [ ]/[ ]
ON/STANDBY

buttons
MENU button:

REMOTE MODE

RECEIVER

DVD

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

[

] buttons: Select options on the HDD
component’s menu.

ENTER button:

CDR

HDD

]/[

Displays the HDD component’s
menu.

Confirms the selection on the
HDD component’s menu.

G RANDOM button
HDD

This button is used with the random playback function.

H REPEAT button
CH

DISC
ALBUM

VOL

GUIDE
TOP MENU

PREVIOUS
MENU

SP A / B

MUTING

This button is used to set the repeat playback functions.

6
3

ENTER
PLAYLIST

PLAYLIST

RETURN

SETUP

4
LISTENING MODE
STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

7
8

PLAY MODE

DISPLAY

RC-645S

TX-SR304_En.book Page 16 Tuesday, February 7, 2006 4:57 PM

Remote Controller—Continued
A Play [ ] button

TAPE Mode

This button is used to start playback.

To select your Cassette deck as the input source,
press:
RECEIVER

]/[ ] buttons
The Rewind [ ] button is used to start rewind. The
FF [ ] button is used to start fast forward.

TAPE mode is used to control an Onkyo cassette
recorder connected to the AV receiver via
.
To set the remote controller to TAPE mode, press the
[RECEIVER] REMOTE MODE button.
For twin cassette decks, only deck B can be controlled.

RECEIVER
REMOTE MODE

DVD

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

CDR

HDD

VOL

GUIDE
TOP MENU

PREVIOUS
MENU

SP A / B

MUTING

ENTER
PLAYLIST

PLAYLIST

RETURN

SETUP

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

PLAY MODE
DISPLAY

RC-645S

A
B
C
D

LISTENING MODE
STEREO

C Reverse Play [ ] button
D Rewind & FF [

TAPE

RECEIVER

This button is used to stop playback.
This button is used to start reverse playback.

ON/STANDBY

B Stop [ ] button

TX-SR304_En.book Page 17 Tuesday, February 7, 2006 4:57 PM

Enjoying Home Theater
Speaker Sets A and B
You can use two sets of speakers with the AV receiver: speaker set A and speaker set B.
Speaker set A should be used in your main listening room for up to 5.1-channel playback.
*While speaker set B is on, speaker set A is reduced to 2.1-channel playback.

Speaker set B can be used in another room and offers 2-channel stereo playback.
Speaker set A
AV receiver

Remote
controller

A SPEAKERS B

or
SP A / B

Speaker set B
On

Off

Indicator

Off

Output

Set A: 2.1 channels
Set B: 2 channels

Set B: 2 channels

Set A: 5.1 channels
No sound

Speaker Set A: Main Room
Front left and right speakers
These output the overall sound. Their role in a home theater is to provide a solid anchor for the sound
image. They should be positioned facing the listener at about ear level, and equally spaced from the
TV. Angle them inward.

Center speaker
This speaker enhances the
front left and right speakers, making
sound movements distinct and providing
a full sound image. For movies it’s used
mainly for dialog.
Position it close to your TV facing forward
at about ear level, or at the same height
as the front left and right speakers.
* While speaker set B is on, this speaker
outputs no sound.

Corner

Subwoofer
The subwoofer handles the bass
sounds of the LFE (Low-Frequency
Effects) channel. In general, a good
bass sound can be obtained by
installing the subwoofer in a front
corner, or at one-third the way along
the wall, as shown.

Speaker Set B: Sub Room

1/3 wall
length

Surround left and right speakers
These speakers are used for precise sound positioning and to add realistic ambience. Position them at the
sides of the listener, or slightly behind, about 2–3 feet
(60–100 cm) above ear level. Ideally they should be
equally spaced from the listener.
* While speaker set B is on, these speakers output no
sound.

TX-SR304_En.book Page 18 Tuesday, February 7, 2006 4:57 PM

Connecting Your Speakers
Speaker Configuration

Speaker Connection Precautions

For the best surround-sound experience, you should connect five speakers and a powered subwoofer.
The following table shows which channels you should
use based on the number of speakers that you have.
Number of speakers:

Front left

✓

Front right

✓

Center

✓

Surround left

✓

Surround right

✓

No matter how many speakers you use, a powered subwoofer is recommended for a really powerful and solid
bass.
Before using the AV receiver, you must specify which
speakers are connected and their sizes (see page 34).
To get the very best from your surround-sound system,
you should also specify the distance between the listener
and each individual speaker so that the sound from each
speaker arrives at the listener’s ears at the same time (see
page 52). In addition, you should set the level of each
individual speaker to achieve an equal balance (see
page 52.)

Attaching the Speaker Labels
The AV receiver’s positive (+) speaker terminals are
color-coded for ease of identification. (The negative (–)
speaker terminals are all black.)
Speaker terminal

Color

Front left

White

Front right

Red

Center

Green

Surround left

Blue

Surround right

Gray

The supplied speaker labels are also color-coded and you
should attach them to the positive (+) side of each
speaker cable in accordance with the above table. All you
need to do then is to match the color of each label to the
corresponding speaker terminal.

Read the following before connecting your speakers:
• You can connect speakers with an impedance of
6 ohms or higher. If you use speakers with a lower
impedance, and use the amplifier at high volume levels for a long period of time, the built-in protection
circuit may be activated.
• Disconnect the power cord from the wall outlet before
making any connections.
• Read the instructions supplied with your speakers.
• Pay close attention to speaker wiring polarity. In other
words, connect positive (+) terminals to only positive
(+) terminals, and negative (–) terminals to only negative (–) terminals. If you get them the wrong way
around, the sound will be out of phase and will sound
unnatural.
• Unnecessarily long, or very thin speaker cables may
affect the sound quality and should be avoided.
• Be careful not to short the
positive and negative wires.
Doing so may damage the AV
receiver.
• Don’t connect more than one
cable to each speaker terminal. Doing so may damage the
AV receiver.
• Don’t connect one speaker to several terminals.

TX-SR304_En.book Page 19 Tuesday, February 7, 2006 4:57 PM

Connecting Your Speakers—Continued
Connecting Speaker

Strip 3/8" (10 mm) of insulation from the ends of the
speaker cables, and twist
the bare wires tightly, as
shown.

While pressing the lever, insert
the wire into the hole, and then
release the lever.
Make sure that the terminals are
gripping the bare wires, not the
insulation.

Connecting a Powered Subwoofer
3/8" (10 mm)

Using a suitable cable, connect the AV receiver’s SUBWOOFER PRE OUT to an input on your powered subwoofer, as shown. If your subwoofer is unpowered and
you’re using an external amplifier, connect the SUBWOOFER PRE OUT to an input on the amplifier.
Powered
subwoofer

LINE INPUT

Note:
Make sure the cable is plugged all the way.

The following illustration shows which speaker should be connected to each pair of terminals.
Speaker Set A
Center speaker

Front right
speaker

Front left
speaker

Surround
right
speaker

Surround
left
speaker

Front right
speaker

Front left
speaker

Speaker Set B

TX-SR304_En.book Page 20 Tuesday, February 7, 2006 4:57 PM

Connecting Antenna
This section explains how to connect the supplied indoor
FM antenna and AM loop antenna, and how to connect
commercially available outdoor FM and AM antennas.
The AV receiver won’t pick up any radio signals without
any antenna connected, so you must connect the antenna
to use the tuner.

Connecting the AM Loop Antenna
The supplied indoor AM loop antenna is for indoor use
only.

Assemble the AM loop antenna, inserting
the tabs into the base, as shown.

Connect both wires of the AM loop
antenna to the AM push terminals, as
shown.
(The antenna’s wires are not polarity sensitive, so
they can be connected either way around).
Make sure that the wires are attached securely and
that the push terminals are gripping the bare
wires, not the insulation.

AM antenna push terminals
FM antenna jack

Connecting the Indoor FM Antenna
The supplied indoor FM antenna is for indoor use only.

Attach the FM antenna, as shown.
■ American Model

Push

Insert wire

Release

Insert the plug fully into the jack.

■ Other Models

Insert the plug fully
into the jack.

Once your AV receiver is ready for use, you’ll
need to tune into an FM radio station and adjust
the position of the FM antenna to achieve the best
possible reception.

Fully extend the antenna and point it in
various directions to find the best reception. Secure it in that position with thumbtacks or something similar.

If you cannot achieve good reception with the supplied
indoor FM antenna, try a commercially available outdoor FM antenna instead (see page 21).

Once your AV receiver is ready for use, you’ll
need to tune into an AM radio station and adjust
the position of the AM antenna to achieve the best
possible reception.
Keep the antenna as far away as possible from
your AV receiver, TV, speaker cables, and power
cords.
If you cannot achieve good reception with the supplied
indoor AM loop antenna, try using it with a commercially available outdoor AM antenna (see page 21).

TX-SR304_En.book Page 21 Tuesday, February 7, 2006 4:57 PM

Connecting Antenna—Continued
Connecting an Outdoor FM Antenna

Connecting an Outdoor AM Antenna

If you cannot achieve good reception with the supplied
indoor FM antenna, try a commercially available outdoor FM antenna instead.

If good reception cannot be achieved using the supplied
AM loop antenna, an outdoor AM antenna can be used in
addition to the loop antenna, as shown.
Outdoor antenna
Insulated antenna cable
AM loop antenna

Notes:
• Outdoor FM antennas work best outside, but usable
results can sometimes be obtained when installed in an
attic or loft.
• For best results, install the outdoor FM antenna well
away from tall buildings, preferably with a clear line
of sight to your local FM transmitter.
• Outdoor antenna should be located away from possible noise sources, such as neon signs, busy roads, etc.
• For safety reasons, outdoor antenna should be situated
well away from power lines and other high-voltage
equipment.
• Outdoor antenna must be grounded in accordance
with local regulations to prevent electrical shock hazards.

Outdoor AM antennas work best when installed outside
horizontally, but good results can sometimes be obtained
indoors by mounting horizontally above a window. Note
that the AM loop antenna should be left connected.
Outdoor antenna must be grounded in accordance with
local regulations to prevent electrical shock hazards.

■ Using a TV/FM Antenna Splitter
It’s best not to use the same antenna for both FM and TV
reception, as this can cause interference problems. If circumstances demand it, use a TV/FM antenna splitter, as
shown.

TV/FM antenna splitter
To AV receiver

To TV (or VCR)

TX-SR304_En.book Page 22 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components
AV Connection Color Coding

About AV Connections

RCA-type AV connections are usually color coded: red,
white, and yellow. Use red plugs to connect right-channel audio inputs and outputs (typically labeled “R”). Use
white plugs to connect left-channel audio inputs and outputs (typically labeled “L”). And use yellow plugs to
connect composite video inputs and outputs.

• Before making any AV connections, read the manuals
supplied with your other AV components.
• Don’t connect the power cord until you’ve completed
and double-checked all AV connections.

Optical Digital Jacks
The AV receiver’s optical digital jack has shutter-type
cover that open when an optical plug is inserted and
close when it’s removed. Push plugs in all the way.

Left (white)

Analog audio

Right (red)
(Yellow)

Caution: To prevent shutter damage, hold the optical
plug straight when inserting and removing.

Left (white)
Right (red)

Composite video

• Push plugs in all the way to make
good connections (loose connections can cause noise or malfunctions).
• To prevent interference, keep
audio and video cables away from
power cords and speaker cables.

(Yellow)
Right!

Wrong!

AV Cables & Jacks
Video
Cable

Component
video cable

Jack

Description

Component video separates the luminance (Y) and
color difference signals (PR, PB), providing the best
picture quality. (Some TV manufacturers label their
component video jacks slightly differently.)

Composite
video cable

VIDEO

Composite video is commonly used on TVs, VCRs,
and other video equipment. Use only dedicated
composite video cables.

Audio
Cable

Jack
OPTICAL

Optical digital
audio cable

Coaxial digital
audio cable

Analog audio
cable (RCA)

COAXIAL

Multichannel
analog audio
cable (RCA)

Note: The AV receiver does not support SCART plugs.

Description

Offers the best sound quality and allows you to
enjoy surround sound (e.g., Dolby Digital, DTS).
The audio quality is the same as for coaxial.
Offers the best sound quality and allows you to
enjoy surround sound (e.g., Dolby Digital, DTS).
The audio quality is the same as for optical.
This cable carries analog audio. It’s the most common connection format for analog audio and can be
found on virtually all AV components.
This cable carries multichannel analog audio and is
typically used to connect DVD players with a 5.1channel analog audio output. Several standard analog audio cables can be used instead of a multichannel cable.

TX-SR304_En.book Page 23 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Connecting Both Audio & Video
By connecting both the audio and video outputs of your DVD player and other AV components to the AV receiver, you
can select both the audio and video simultaneously simply by selecting the appropriate input source on the AV receiver.
: Signal Flow
Video

Video
Audio

Audio
TV, projector,
etc.
Speakers (see pages 18, 19
for connection information)

DVD player, etc.

Which Connections Should I Use?
The AV receiver supports several connection formats for compatibility with a wide range of AV equipment. The format
you choose will depend on the formats supported by your other components. Use the following sections as a guide.
For video components, such as a DVD player, you must make two connections—one for audio, one for video.

Video Connection Formats

Audio Connection Formats

Video equipment can be connected to the AV receiver
using one of the following video connection formats:
composite video, or component video, the latter offering
the best picture quality.
When choosing a connection format, bear in mind that
the AV receiver doesn’t convert between formats, so only
outputs of the same format as the input will output the
signal.
For example, if you connect your DVD player to the
COMPONENT VIDEO DVD IN, a video signal will be
output by the COMPONENT OUT, but not by any composite video outputs.

Audio equipment can be connected to the AV receiver
using the following audio connection formats: analog,
optical, coaxial, and multichannel.
When choosing a connection format, bear in mind that
the AV receiver doesn’t convert between formats.
For example, audio signals connected to an OPTICAL or
COAXIAL digital input are not output by the analog
TAPE OUT, so if you want to record from, for example,
your CD player, in addition to connecting it to a digital
input, you must also connect it to the analog CD IN.

CD player,
etc.

Video Input/Output Diagram
DVD player,
etc.
Output

Output
Composite

Component

Composite

Component

Input

Composite

Component

Coaxial

Analog

Multichannel

Optical

Coaxial

Analog

Multichannel

OUT
Input

OUT

Optical

IN
AV Receiver

Audio Input/Output Diagram for Recording

Analog

Cassette
recorder, etc.

TV,
projector,
etc.

TX-SR304_En.book Page 24 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Connecting a DVD Player
Step 1: Video Connection (DVD Player to AV Receiver to TV)
A If your TV has component video input jacks, connect your DVD player to the AV receiver’s COMPONENT
VIDEO DVD IN jacks. And connect the AV receiver’s COMPONENT VIDEO OUT jacks to your TV. This will
provide better picture quality than connection B .
B If your TV doesn’t have component video input jacks, connect your DVD player to the AV receiver’s DVD IN
VIDEO jack. And connect the AV receiver’s MONITOR OUT VIDEO jack to your TV.

COMPONENT VIDEO IN
Y
PB
PR

A
B

VIDEO IN

TV, projector,
etc.

AV receiver

Y
PB
PR
COMPONENT VIDEO OUT

DVD player

VIDEO
OUT

: Signal Flow

TX-SR304_En.book Page 25 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Step 2: Audio Connection
a If your DVD player has a coaxial digital audio output jack, connect it to the AV receiver’s DIGITAL IN COAXIAL jack. You can enjoy Dolby and DTS listening modes with this connection.
b If your DVD player has an optical digital audio output jack instead of coaxial one, connect it to the AV receiver’s
DIGITAL IN OPTICAL 1 or 2 jack, and set the DIGITAL INPUT assignment to OPT1 or OPT 2 (see page 33).
Coaxial connections perform the same as optical ones.
c Optionally, connecting your DVD player’s audio out L/R jacks to the AV receiver’s DVD IN FRONT L/R jacks
will allow you to record audio from your DVD player.
Note: If your DVD player has main L/R output jacks and multichannel L/R output jacks, use the main L/R output
jacks.
—Multichannel Audio Connection—
d If your DVD player has analog multichannel output jacks, connect them to the AV receiver’s DVD IN FRONT,
SURROUND, CENTER, and SUBWOOFER jacks. Use a multichannel analog cable or several normal audio
cables. You can enjoy DVD-Audio or SACD with this connection.

AV receiver

a
c

L
OPTICAL
OUT

COAXIAL
OUT

R
AUDIO
OUT

c
d

R
FRONT

R
SURROUND

SUB
WOOFER

CENTER

Multichannel Connection

DVD player

: Signal Flow

TX-SR304_En.book Page 26 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Connecting a VCR
Connecting a VCR for Playback
Step 1: Video Connection (VCR to AV Receiver to TV)
A Connect your VCR’s video output jack to the AV receiver’s VIDEO 1 IN jack and connect the AV receiver’s
MONITOR OUT jack to your TV’s video input jack.
B If your VCR and TV have component video jacks, connect the VCR’s component video output jacks to the AV
receiver’s COMPONENT VIDEO VIDEO 1 IN jacks, and connect the AV receiver’s COMPONENT VIDEO
OUT jacks to your TV’s component video in jacks. This offers better picture quality than composite video.
C Connect a TV antenna output jack (e.g., RF OUT) to your VCR’s antenna input, and connect your VCR’s antenna
output jack to your TV’s antenna input jack.
Step 2: Audio Connection
a Connect your VCR’s audio output jacks to the AV receiver’s VIDEO 1 IN L/R jacks.

COMPONENT VIDEO IN
Y
PB
PR

VIDEO IN

Antenna input
(e.g., RF IN)

TV, projector,
etc.

Coaxial feed
AV receiver

Coaxial feed from TV
antenna or set-top box

L
Y
PB
PR
COMPONENT VIDEO OUT

VIDEO
OUT

Antenna input
(e.g., RF IN)

Antenna output
(e.g., RF OUT)

AUDIO
OUT

VCR, DVD recorder
: Signal Flow

TX-SR304_En.book Page 27 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Connecting a VCR for Recording
Step 1: Video Connection
A Connect the AV receiver’s VIDEO 1 OUT jack to your VCR’s video input jack.
Step 2: Audio Connection
a Connect the AV receiver’s VIDEO 1 OUT L/R jacks to your VCR’s audio input jacks.
AV receiver

: Signal Flow

VIDEO
IN
L
AUDIO
IN

VCR, DVD recorder

Connecting a Camcorder, Games Console, or Other Device
Step 1: Video Connection
A Connect your camcorder’s video output jack to the AV receiver’s VIDEO 3 IN jack.
Step 2: Audio Connection
a Connect your camcorder’s audio output jack to the AV receiver’s VIDEO 3 IN L/R jacks.
AV receiver
VIDEO
IN

TV, projector,
etc.

L
AUDIO
OUT

R
VIDEO
OUT

Camcorder, games
console, etc.

: Signal Flow

TX-SR304_En.book Page 28 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Connecting a Satellite, Cable, Set-top Box, or Other Video Source
Step 1: Video Connection
A Connect your set-top box’s video output jack to the AV receiver’s VIDEO 2 IN jack and connect the AV receiver’s
MONITOR OUT jack to your TV’s video input jack.
B If your VCR and TV have component video jacks, connect your set-top box’s component video output to the AV
receiver’s COMPONENT VIDEO VIDEO 2 IN jacks, and connect the AV receiver’s COMPONENT VIDEO
OUT jacks to your TV’s component video in jacks. This offers better picture quality than composite video.
C Connect a coaxial feed from a TV antenna to your set-top box’s antenna input jack (e.g., RF IN), and connect
your set-top box’s antenna output jack (e.g., RF OUT) to your TV’s antenna input jack.
Step 2: Audio Connection
a Connect your set-top box’s audio output jack to the AV receiver’s VIDEO 2 IN L/R jacks.
b If your set-top box has an optical digital audio output jack, connect it to the AV receiver’s DIGITAL IN OPTICAL 1 jack. You can enjoy Dolby and DTS listening modes with this connection.
c If your set-top box has a coaxial digital audio output jack instead of an optical one, connect it to the AV receiver’s
DIGITAL IN COAXIAL jack, and set the DIGITAL INPUT assignment to COAX (see page 33). Coaxial connections perform the same as optical ones.
COMPONENT VIDEO IN
Y
PB
PR

: Signal Flow

VIDEO IN

TV, projector,
etc.

Antenna input
(e.g., RF IN)

C
Coaxial feed

AV receiver

Coaxial feed from TV antenna

c
B

Antenna input
(e.g., RF IN)
L
OPTICAL
OUT

COAXIAL
OUT

Y
PB
PR
COMPONENT VIDEO OUT

VIDEO
OUT

R
AUDIO
OUT

Satellite, cable, set-top
box, etc.

Antenna output
(e.g., RF OUT)

TX-SR304_En.book Page 29 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Connecting a CD Player or Turntable
■ CD Player or Turntable with Built-in Phono Preamp
a Connect your CD player’s analog audio output jacks, or your turntable with built-in phono preamp’s audio output
jacks to the AV receiver’s CD IN L/R jacks. With connection a , you can listen to and record audio from the CD

player or turntable.
b If your CD player has an optical output jack, connect it to the AV receivers DIGITAL IN OPT 2 jack.
c If your CD player has a coaxial output jack instead of an optical one, connect it to the AV receiver’s DIGITAL

IN COAXIAL jack, and set the DIGITAL INPUT assignment to COAX (see page 33). Coaxial connections
perform the same as optical ones.
AV receiver
: Signal Flow
Connect one or the other

OPTICAL
OUT

COAXIAL
OUT

CD player
or

L
AUDIO
OUT

Turntable (MM) with
built-in phono preamp

■ Turntable (MM) with no Phono Preamp Built-in
A phono preamp is necessary to connect a turntable that
doesn’t have a phono preamp built-in.

■ Turntable with an MC (Moving Coil) Cartridge
An MC head amp and phono preamp are necessary to
connect a turntable with an MC (Moving Coil) cartridge.

AV receiver

AUDIO
OUTPUT

Phono preamp

R
CD

AUDIO
OUTPUT

AUDIO
INPUT

AUDIO
OUTPUT

AUDIO
INPUT

AUDIO
OUTPUT

Phono
preamp
MC head amp or
MC transformer
AUDIO
OUTPUT

AUDIO
INPUT

TX-SR304_En.book Page 30 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Connecting an HDD-compatible Component (Audio Only)
As of this printing, the Onkyo Remote Interactive Dock is the only HDD-compatible component available.
Connect your HDD-compatible component’s
analog audio output jacks to the AV receiver’s
VIDEO 3 IN L/R jacks or TAPE IN L/R jacks.
Notes:
• Connect the HDD-compatible component’s
video output directly to a video input on your
TV.
• Connect the Remote Interactive Dock with an
cable (see page 31).
• Set the Remote Interactive Dock’s RI MODE
switch to HDD.
• Set the AV receiver’s Input Display to HDD
(see page 33).
• Refer to the Remote Interactive Dock’s instruction manual.

AUDIO
OUT

S VIDEO
OUT
L

AV receiver
To TV directly

: Signal Flow
Connect one or the other

Connecting a Cassette, CDR, MiniDisc, or DAT Recorder
a Connect your recorder’s audio input jacks to the AV receiver’s TAPE OUT L/R jacks, and connect your
recorder’s audio output jacks to the AV receiver’s TAPE IN L/R jacks. With connection a , you can play and

record with the recorder.
b If your recorder has a coaxial digital output jack, connect it to the AV receiver’s DIGITAL IN COAXIAL jack,

and set the DIGITAL INPUT assignment to COAX (see page 33).
c If your recorder has an optical output jack instead of a coaxial one, connect it to the AV receiver’s DIGITAL IN

OPT 1 or OPT 2 jack and set the DIGITAL INPUT assignment to OPT1 or OPT2 (see page 33).

AV receiver
Connect one or the other

OPTICAL
OUT

: Signal Flow

c
COAXIAL
OUT

b
L

OUT
PLAY
R
L

IN
RED
R

Cassette recorder,
CDR, etc.

TX-SR304_En.book Page 31 Tuesday, February 7, 2006 4:57 PM

Connecting Your Components—Continued
Connecting Onkyo

Components

Step 1: Make sure that each Onkyo component is connected to the AV receiver with an analog audio cable.
Step 2: Make the

connection.

Step 3: If you’re using an MD, CDR, or HDD component, change the input Display (see page 33).
With

(Remote Interactive), you can use the following special functions:

■ Auto Power On/Standby
When you start playback on a component connected via
, if the AV receiver is on Standby, it will automatically
turn on and select that component as the input source. Similarly, when the AV receiver is set to Standby, all components connected via
will also go on Standby.
■ Direct Change
When playback is started on a component connected via
, the AV receiver automatically selects that component
as the input source. If your DVD player is connected to the AV receiver’s multichannel DVD input, you’ll need to
press the [MULTI CH] button to hear all channels (see page 37), as the Direct Change
function only selects the
FRONT DVD IN jacks.
■ Remote Control
You can use the AV receiver’s remote controller to control your other
-capable Onkyo components, pointing the
remote controller at the AV receiver’s remote control sensor instead of the component.
Notes:
• Use only
cables for
connections.
cables are supplied with Onkyo players (DVD,
CD, etc.).
• Some components have two
jacks. You can
connect either one to the AV receiver. The other
jack is for connecting additional
-capable
components.
• Connect only Onkyo components to
jacks.
Connecting other manufacturer’s components
may cause a malfunction.
• Some components may not support all
functions. Refer to the manuals supplied with your
other Onkyo components.

IN
L
R
CD

FRONT
REMOTE
CONTROL

L
R
DVD

e.g., CD player
R
L
ANALOG
AUDIO OUT

e.g., DVD player
R
L
ANALOG
AUDIO OUT

Connecting the Power Cord
Notes:
• Before connecting the power cord, connect all of your speakers and AV components.
• Connect the AV receiver’s power cord to a suitable wall outlet.
• Turning on the AV receiver may cause a momentary power surge that might interfere with other electrical
equipment on the same circuit. If this is a problem, plug the AV receiver into a different branch circuit.

TX-SR304_En.book Page 32 Tuesday, February 7, 2006 4:57 PM

Turning On
RECEIVER

STANDBY/ON
STANDBY indicator

ON/STANDBY

REMOTE MODE

ON/STANDBY

RECEIVER

DVD

TAPE

INPUT SELECTOR
TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

MULTI CH

DVD

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

SETUP

RETURN

TAPE

TUNER

CDR

CLEAR
PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

HDD

VOL

Turning On the AV Receiver

Remote
controller

AV receiver
STANDBY/ON

RECEIVER

Press the [STANDBY/ON] button.
Alternatively, press the remote controller’s [RECEIVER] button followed
by the [ON/STANDBY] button.
The AV receiver comes on, the display lights up, and the STANDBY indicator goes off.

or
ON/STANDBY

To turn the AV receiver off, press the [STANDBY/ON] button, or the remote controller’s [ON/STANDBY] button. The AV receiver will enter Standby mode. To prevent
any loud surprises the next time you turn on the AV receiver, always turn down the
volume before turning it off.

Smooth Operation in a Few Easy Steps
To ensure smooth operation, here’s a few easy steps to help you configure the AV receiver before you use it for the
very first time. These settings only need to be made once.
■ Have you connected a component to a digital audio input?
If you have, see “Assigning Digital Inputs to Input Sources” on
page 33.

COAXIAL

OPTICAL

■ Have you connected an Onkyo MD recorder, CD recorder,
or next generation HDD-compatible component?
If you have, see “Changing the Input Display” on page 33.

OUT

TAPE

■ Do the speaker configuration—this is essential!
See “Speaker Configuration” on page 34.

CD recorder, MD recorder

TX-SR304_En.book Page 33 Tuesday, February 7, 2006 4:57 PM

First Time Setup
Assigning Digital Inputs to Input
Sources

2, 3
TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

Changing the Input Display
If you connect an
-capable Onkyo MiniDisc
recorder, CD recorder, or next generation HDD-compatible component to the TAPE IN/OUT or VIDEO 3 IN
jacks, for
to work properly, you must change this
setting.
This setting can only be changed on the AV receiver.

SETUP

CLEAR
PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

Input selector

Default assignment

DVD
VIDEO 1/VCR
VIDEO 2
VIDEO 3
TAPE
CD

COAX
---OPT 1
------OPT 2

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

LISTENING MODE

Press the input selector button
for the source that you want to
assign.
(Digital inputs cannot be assigned to
the TUNER input source.)

VIDEO 1/VCR

VIDEO 2

DISPLAY DIGITAL INPUT

VIDEO 3

RT/PTY/TP MEMORY TUNING MODE

TAPE

RETURN

TUNER

SETUP

1, 2

iPod photo: If you’re using an iPod photo with the
DS-A1 Remote Interactive Dock, connect the DS-A1’s S
VIDEO jack directly to an S-Video input on your TV.

TAPE

Press the [TAPE] or [VIDEO 3]
input selector button so that
“TAPE” or “VIDEO3” appears on
the display.

or
VIDEO 3

TAPE

or
VIDEO 3

Press and hold down the [TAPE]
or [VIDEO 3] input selector button (about 3 seconds) to change
the setting.
Repeat this step to select MD, CDR, or
HDD.
For the TAPE input selector, the setting
changes in this order:
TAPE → MD → CDR → HDD

→

Note:
Make sure you also set your digital sources to send out a
digital signals. Please refer to the digital sources’ manual.

DVD

1, 2

With this function, you can assign digital inputs to input
sources. For example, if you connect your DVD player
to DIGITAL IN OPTICAL, you’ll need to assign that
input (OPT1) to the DVD input source.
You can change the assignments as follows.

DVD

STEREO

CLEAR

MULTl CH

To enjoy Dolby Digital and DTS, you must connect your
DVD player to the AV receiver by using a digital audio
connection (coaxial or optical).
Here are the default assignments.

TONE

PHONES

2
DIGITAL INPUT

3
DIGITAL INPUT

Press the [DIGITAL INPUT]
button.
The current assignment appears.

→

For the VIDEO 3 input selector, the setting changes in this order:
VIDEO 3 → HDD

Note:
HDD can be selected for the TAPE input selector or
VIDEO 3 input selector, but not both at the same time.

Press the [DIGITAL INPUT] button repeatedly to select COAX,
OPT1, OPT2, or “– – – –” (analog).

TX-SR304_En.book Page 34 Tuesday, February 7, 2006 4:57 PM

First Time Setup—Continued
Speaker Configuration
ON/STANDBY

REMOTE MODE

RECEIVER

DVD

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

CDR

HDD

VOL

PREVIOUS
MENU

GUIDE
TOP MENU

SP A / B

This section explains how to specify your speaker configuration.
For speakers with a cone diameter
larger than 6-1/2 inches (16 cm),
specify Large (full band). For those
with a smaller diameter, specify
Small (default crossover 100 Hz).
The crossover frequency can be
Cone diameter
changed on page 51.

RECEIVER

Press the [RECEIVER] button followed by the [SETUP] button.

MUTING

2–8

ENTER
PLAYLIST

PLAYLIST

1, 9

RETURN
RETURN

SETUP

Use the Up and Down [ ]/[ ]
buttons to select “1. SP Config,”
and then press the [ENTER] button.

LISTENING MODE
STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

PLAY MODE
DISPLAY

ENTER

RC-645S

While the Subwoofer setting is
selected, use the Left and Right
[ ]/[ ] buttons to select Yes or
No.
Yes: Select if a subwoofer is connected.
No: Select if no subwoofer is connected.

Use the Down [ ] button to
select “Front,” and then use the
Left and Right [ ]/[ ] buttons to
select Small or Large.
Small: Select if the front speakers are
small.
Large: Select if the front speakers are
large.
Note:
• If the Subwoofer setting in step 3 is
set to No, this setting is fixed at Large
and does not appear.

TX-SR304_En.book Page 35 Tuesday, February 7, 2006 4:57 PM

First Time Setup—Continued

Use the Down [ ] button to
select “Center,” and then use the
Left and Right [ ]/[ ] buttons to
select Small, Large, or None.
Small: Select if the center speaker is
small.
Large: Select if the center speaker is
large.
None: Select if no center speaker is
connected.
Note:
• If the Front setting in step 4 is set to
Small, the Large option cannot be
selected.

Use the Down [ ] button to
select “Surround,” and then use
the Left and Right [ ]/[ ] buttons to select Small, Large, or
None.
Small: Select if the surround speakers are small.
Large: Select if the surround speakers are large.
None: Select if no surround speakers
are connected.
Note:
• If the Front setting in step 4 is set to
Small, the Large option cannot be
selected.

7
SETUP

Testing the speakers
To test that all of the speakers are working properly,
press the remote controller’s [TEST TONE] button.
LISTENING MODE
STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT

TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

PLAY MODE
DISPLAY

RC-645S

The test tone will be output by each speaker in turn
and the name of each speaker will appear on the display. To turn off the test tone, press the [TEST
TONE] button again.
• If the test tone is not produced by a speaker, or it’s
produced by a speaker other than that shown on
the display, you may have wired the speakers
incorrectly and you should check your connections (see pages 18, 19).
• If the test tone is not produced by a speaker and its
name does not appear on the display, you may
have set the speaker settings incorrectly (see
page 34).

Press the [SETUP] button.
Setup closes.
When you want to go back up one
menu level to “SP Config,” press the
[RETURN] button.

TX-SR304_En.book Page 36 Tuesday, February 7, 2006 4:57 PM

Playing Your AV Components
Basic AV Receiver Operation

ON/STANDBY

DISPLAY

REMOTE MODE

RECEIVER

DVD

TAPE

INPUT SELECTOR

TUNING / PRESET

MASTER VOLUME

STANDBY/ON

4
ENTER

MULTI CH

DVD

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

HDD

DISC
ALBUM

MULTI CH

CDR

PREVIOUS
MENU

GUIDE
TOP MENU

VOL

SP A / B

MUTING

ENTER
PLAYLIST

Remote
controller
AV receiver

RECEIVER

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

PLAYLIST

Use the AV receiver’s input selector buttons to select the input source.
To select the input source with the remote controller, press the
[RECEIVER] button, and then use the INPUT SELECTOR buttons.

On the remote controller, the [V1], [V2], and [V3] buttons select the VIDEO 1/VCR,
VIDEO 2, and VIDEO 3 input sources respectively.

DVD

TAPE

TUNER

2
AV receiver

Remote
controller

A SPEAKERS B

SP A / B

Use the SPEAKERS [A] and [B] buttons on the AV receiver or the [SP A/B]
button on the remote controller to select the speaker set that you want to
use.
Pressing the remote controller’s [SP A/B] button cycles through the following settings:
Speaker Set A → Speaker Set A&B → Speaker Set B → Off.
The A and B speaker indicators show
whether each speaker set is on or off.
Indicators
Note that when speaker set B is turned on, speaker set A is reduced to 2.1-channel
playback.

Start playback on the source component.
When you select DVD or another video component, on your TV you’ll need to select
the video input that’s connected to the AV receiver’s MONITOR OUT.

4
AV receiver

Remote
controller

MASTER VOLUME

VOL

To adjust the volume, use the MASTER VOLUME control, or the remote
controller’s [VOL] button.
The volume can be set to MIN, 1 through 79, or MAX. The AV receiver is designed for
home theater enjoyment and has a wide volume range for precise adjustment.
Note: When the subwoofer volume level is set to a positive (+) value, the maximum
master volume level is reduced proportionally.

5
36

Select a suitable listening mode and enjoy!
See “Using the Listening Modes” on page 45.

TX-SR304_En.book Page 37 Tuesday, February 7, 2006 4:57 PM

Playing Your AV Components—Continued
Using the Multichannel Input

You can display various information about the current
input source as follows.
RECEIVER

ON/STANDBY

REMOTE MODE

RECEIVER

DVD

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

CDR

HDD

VOL

The multichannel input is for connecting a component
with individual 5.1-channel analog audio output jacks,
such as a DVD player or MPEG decoder. See page 25 for
hookup information.
RECEIVER

Press the [RECEIVER] button followed by the [MULTI CH] button
so that MULTI CH indicator
appears on the display.
Audio from the multichannel input will
now be used for the DVD input source.

MULTI CH

MULTI CH indicator

Note:
• While the multichannel input is selected, the Speaker
Configuration settings on page 34 are ignored, and
signals from the multichannel input are fed to the front
left, front right, center, surround left, and surround
right speakers and subwoofer regardless of those settings.

Displaying Source Information

ON/STANDBY

REMOTE MODE

RECEIVER

DISPLAY

Press the [RECEIVER] button,
and then press the [DISPLAY]
button repeatedly to cycle
through the available information.

The following information can typically be displayed for
input sources.
Input source &
volume*1
Signal format*2
or sampling
frequency
Input source &
listening mode

*1 When AM or FM radio is used, the band, preset number, and frequency are displayed.
*2 If the input signal is analog, or AM or FM radio is
selected, no format information is displayed. If the
input signal is PCM, the sampling frequency is displayed. If the input signal is digital but not PCM, the
signal format is displayed. Information is displayed
for about 3 seconds, then the previous display reappears.
Interpreting Surround Channel Information

B C

A: The number of front channels (front left, front right,
and center).
B: The number of surround channels (surround left and
surround right). If there’s surround back channel
information, this number will be 3.
C: LFE channel for subwoofer (1 means yes).

DVD

TAPE

INPUT SELECTOR

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

5
AUDIO SUBTITLE
TEST TONE

CH SEL
PLAY MODE

DISPLAY

RC-645S

TX-SR304_En.book Page 38 Tuesday, February 7, 2006 4:57 PM

Using the Tuner
Listening to the Radio

Tuning into Radio Stations

TUNING MODE
TUNING
TUNING / PRESET

■ Auto Tuning Mode

TUNING MODE

MASTER VOLUME

STANDBY/ON

ENTER

Press the [TUNING MODE] button
so that the AUTO indicator
appears on the display.

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR
PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

2
TUNING / PRESET

TUNER

SETUP
ENTER

Press the TUNING Up or Down
[ ]/[ ] button.
Searching stops when a station is
found.

With the built-in tuner, you can enjoy AM and FM radio
stations. You can store your favorite stations as presets
for quick selection.

TUNER

Use the [TUNER] input selector
button to select either AM or FM.
In this example, FM has been selected.

Band

■ Manual Tuning Mode

TUNING MODE

Frequency

(Actual display depends on country.)

2
TUNING / PRESET

ENTER

AM Frequency Step Setup
(not North America and Europe)
Here you can specify the AM frequency step used in
your area. When this setting is changed, all radio presets
are deleted.

Press the [SETUP] button to display “0. Hardware Setup,” and
then press [ENTER].

Use the Up and Down [ ]/[ ]
buttons to select “AM Freq,” and
then use the Left and Right
[ ]/[ ] buttons to select:
10 kHz: Select if 10 kHz steps are
used in your area.
9 kHz: Select if 9 kHz steps are used
in your area.

Press the [SETUP] button.
Setup closes.

Note:
• This procedure can also be performed on the remote
controller by using its [SETUP] button, arrow buttons,
and [ENTER] button.

Press the [TUNING MODE] button
so that the AUTO indicator disappears from the display.

Press and hold the TUNING Up or
Down [ ]/[ ] button.
The frequency stops changing when
you release the button.
Press the buttons repeatedly to change
the frequency one step at a time.

The American model changes FM frequency in 0.2 MHz
steps, 10 kHz steps for AM. For other models it’s
0.05 MHz steps for FM and 9 kHz or 10 kHz steps for
AM.
When tuned into a station, the TUNED indicator
appears. When tuned into a stereo FM station, the FM
STEREO indicator appears on the display, as shown.
TUNED

AUTO

FM STEREO

Tuning into weak FM stereo stations
If the signal from a stereo FM station is weak, it may be
impossible to get good reception. In this case, switch to
Manual Tuning mode and listen to the station in mono.
Note:
• You can also use the remote controller’s Up and Down
[ ]/[ ] buttons to tune the radio.

TX-SR304_En.book Page 39 Tuesday, February 7, 2006 4:57 PM

Using the Tuner—Continued
Presetting Radio Stations

Deleting Presets

2, 4

3
TUNING / PRESET

TUNING / PRESET

MASTER VOLUME

STANDBY/ON

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

STANDBY

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

CLEAR

RETURN

SETUP

CLEAR

PHONES

PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

MULTl CH

You can store up to 30 of your favorite radio stations as
presets.

Tune into the station that you
want to store as a preset.

Press the [MEMORY] button.
The MEMORY indicator appears and
the preset number flashes.

MEMORY

While the MEMORY indicator is
displayed (about 8 seconds), use
the PRESET [ ]/[ ] buttons to
select a preset from 1 through 30.
In this example, preset #3 is selected.

TUNING / PRESET

ENTER

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

Select the preset that you want to
delete.
See the previous section.

2
MEMORY TUNING MODE

CLEAR

While holding down the [MEMORY] button, press the
[TUNING MODE] button.
The selected preset is deleted and its
number disappears from the display.

Displaying Radio Information

1
TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR
PHONES
MULTl CH

Press the [MEMORY] button
again to store the station.
The station is stored and the preset
number stops flashing.
Repeat this procedure for all your
favorite radio stations.

MEMORY

Selecting Preset Stations

DISPLAY

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

Press the [DISPLAY] button
repeatedly to cycle through the
available information.

Band, preset # &
frequency

1
TUNING / PRESET

MASTER VOLUME

Listening mode

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR
PHONES
MULTl CH

TUNING / PRESET

ENTER

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

Use the PRESET [ ]/[ ] buttons, or the remote controller’s
CH [+/–] button to select a preset.

TX-SR304_En.book Page 40 Tuesday, February 7, 2006 4:57 PM

Using the Tuner—Continued
Using RDS (European models only)
RDS only works with European models and only in areas
where RDS broadcasts are available. When tuned into an
RDS station, the RDS indicator appears.
RDS indicator

■ What is RDS?
RDS stands for Radio Data System and is a method of
transmitting data in FM radio signals. It was developed
by the European Broadcasting Union (EBU) and is available in most European countries. Many FM stations use
it these days. In addition to displaying text information,
RDS can also help you find radio stations by type (e.g.,
news, sport, rock, etc.).
The AV receiver supports four types of RDS information:
PS (Program Service)

When tuned to an RDS station that’s broadcasting PS
information, the station’s name appears. When you press
the [DISPLAY] button, the frequency is displayed for
three seconds.
RT (Radio Text)

When tuned to an RDS station that’s broadcasting RT
text information, that information is shown on the display (see page 41).

Program Types Used in Europe (PTY)
Type

Display

Description

None

NONE

No program type.

News
reports

NEWS

Reports on current events and
happenings.

Current
affairs

AFFAIRS

Topical reporting of current
affairs, often with a wider
range of topics than news
reports.

Information INFO

General information such as
weather forecasts, consumer
affairs, medical help, etc.

Sport

SPORT

Live sports action, sports
news, and interviews.

Education

EDUCATE Formal educational programs.

Drama

DRAMA

Culture

CULTURE Cultural programs (including
religious affairs).

Science and SCIENCE Programs about the natural
technology
sciences and technology.
Varied

VARIED

Speech-based programs not
covered by the above categories (e.g., quizzes, panel
games, and comedy).

Pop music

POP M

Popular commercial music,
usually from past or present
sales charts (e.g., Top 40).

Rock music ROCK M

Popular music with an alternative appeal, often not appearing on sales charts.

Middle of
the road
music

M.O.R.M

Easy listening music (as
opposed to Pop, Rock, or
Classical).

Light classics

LIGHT M

Classical music for general
rather than specialist appreciation.

Serious
classics

CLASSICS Performances of major
orchestral works, symphonies, chamber music, etc.
(including the Grand Opera).

PTY (Program Type)

You can also search for radio stations by type (see
page 41).
TP (Traffic Program)

You can also search for TP radio stations (see page 41).
Notes:
• In some cases, the text characters displayed on the AV
receiver may not be identical to those broadcast by the
radio station. Also, unexpected characters may be displayed when unsupported characters are received.
This is not a malfunction.
• If the signal from an RDS station is weak, RDS data
may be displayed intermittently or not at all.

Other music OTHER M Music styles not covered by
the above categories (e.g.,
Jazz, Rhythm & Blues, Folk,
Country, and Reggae).
Alarm

Radio plays and serials.

ALARM

When an RDS station is making an emergency broadcast,
ALARM will flash on the display.

TX-SR304_En.book Page 41 Tuesday, February 7, 2006 4:57 PM

Using the Tuner—Continued
Displaying Radio Text (RT)

To start the search, press
[ENTER].
The AV receiver searches until it finds a
station of the type you specified, at
which point it stops briefly before continuing with the search.

ENTER

1
TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR

PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

When a station you want to listen
to is found, press [ENTER].
If no stations are found, the message
“Not Found” appears.

ENTER

When tuned to an RDS station that’s broadcasting RT
text information, that information can be displayed.

Press the [RT/PTY/TP] button
once.
The RT information scrolls across the
display.

RT/PTY/TP

Listening to Traffic News (TP)

3
TUNING / PRESET

MASTER VOLUME

STANDBY/ON

Notes:
• The message “Waiting” may appear while the AV
receiver waits for RT information.
• If the message “No Text Data” appears on the display,
no RT information is available.

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR
PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

3–5
TUNING / PRESET

STANDBY

A SPEAKERS B

You can search for TP radio stations.

Finding Stations by Type (PTY)

ENTER

TUNER

Use the [TUNER] input selector
button to select FM.

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR
PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

RT/PTY/TP

1
You can search for radio stations by type.

TUNER

Use the [TUNER] input selector
button to select FM.

3
ENTER

RT/PTY/TP

TUNING / PRESET

ENTER

Press the [RT/PTY/TP] button
twice.
The current program type appears on
the display.

Press the [RT/PTY/TP] button
three times.
If the current radio station is broadcasting TP (Traffic Program), “[TP]” will
appear on the display, and traffic news
will be heard as and when it’s broadcast. If “TP” without square brackets
appears, this means that the station is
not broadcasting TP.
To locate a station that is broadcasting TP, press [ENTER].
The AV receiver searches until it finds a
station that’s broadcasting TP.
If no stations are found, the message
“Not Found” appears.

Use the PRESET [ ]/[ ] buttons
to select the type of program you
want.
See the table on page 40.

TX-SR304_En.book Page 42 Tuesday, February 7, 2006 4:57 PM

Common Functions
This chapter explains functions that can be used with any input source.

ON/STANDBY

REMOTE MODE

TONE, –, +

RECEIVER

DVD

TAPE

INPUT SELECTOR
TUNING / PRESET

MASTER VOLUME

Press
[RECEIVER]
first

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

4
+

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

DIMMER

MEMORY TUNING MODE

RETURN

SETUP

MULTI CH

DVD

CLEAR
PHONES
MULTl CH

PHONES

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DIMMER

DISC
ALBUM

GUIDE

Using Headphones

STANDBY/ON

A SPEAKERS B

1
TONE

PHONES

Notes:
• Always turn down the volume before connecting your
headphones.
• Speaker sets A and B are turned off while the headphones plug is inserted in the PHONES jack.
• When you connect a pair of headphones, the listening
mode is set to Stereo, unless it’s already set to Mono,
Stereo, or Direct.
• When the multichannel DVD input is selected, only
the front left and front right channels can be heard in
the headphones.

Setting the Display Brightness
With this function, you can adjust the brightness of the
display.

Remote
controller

DIMMER

VOL

You can adjust the bass or treble for speaker set A’s front
speakers, except when the Direct listening mode is
selected.

AV receiver

DIMMER

HDD

Adjusting the Bass & Treble

You can connect a pair of stereo headphones (1/4-inch
phone plug) to the AV receiver’s PHONES jack for private listening, as shown.

AV receiver

CDR

Press the [DIMMER] button
repeatedly to select: dim, dimmer, or normal brightness.
Alternatively, you can use the [DIMMER] button on the AV receiver (not
European models).

Press the AV receiver’s [TONE]
button repeatedly to select either
Bass or Treble.
Use the TONE [–]/[+] buttons to
adjust.

■ Bass
You can boost or cut low-frequency sounds output by the
front speakers from –10 dB to +10 dB in 2 dB steps.
■ Treble
You can boost or cut high-frequency sounds output by
the front speakers from –10 dB to +10 dB in 2 dB steps.
Note:
• To bypass the bass and treble tone circuits, select the
Direct listening mode.

TX-SR304_En.book Page 43 Tuesday, February 7, 2006 4:57 PM

Common Functions—Continued
Using the Sleep Timer
ON/STANDBY

REMOTE MODE

RECEIVER

DVD

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

Press
[RECEIVER]
first

With the sleep timer, you can set the AV receiver so that
it automatically turns off after a set period.
Remote
controller

CDR

SLEEP
HDD

SLEEP

VOL

GUIDE
TOP MENU

PREVIOUS
MENU

SP A / B

MUTING

Press the remote controller’s
[SLEEP] button repeatedly to
select the required sleep time.
You can set the sleep time from 90 to 10
minutes in 10 minute steps.
The SLEEP indicator appears on the
display when the sleep timer has been
set, as shown. The specified sleep time
appears on the display for about five
seconds, then the previous display
reappears.
SLEEP indicator

ENTER
PLAYLIST

PLAYLIST

RETURN

SETUP

To cancel the sleep timer, press the [SLEEP] button
repeatedly until the SLEEP indicator disappears.
LISTENING MODE
STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

To check the remaining sleep time, press the [SLEEP]
button. Note that if you press the [SLEEP] button while
the sleep time is being displayed, you’ll shorten the sleep
time by 10 minutes.

PLAY MODE
DISPLAY

RC-645S

Muting the AV Receiver
With this function, you can temporarily mute the output
of the AV receiver.
Remote
controller

MUTING

Press the remote controller’s
[MUTING] button.
The output is muted
and the MUTING
indicator flashes on
the display, as shown.

To unmute the AV receiver, press the remote controller’s [MUTING] button again, or adjust the volume. The
output is unmuted and the MUTING indicator goes off.
Muting is cancelled when the AV receiver is set to
Standby.

TX-SR304_En.book Page 44 Tuesday, February 7, 2006 4:57 PM

Common Functions—Continued
Adjusting Speaker Levels
ON/STANDBY

REMOTE MODE

RECEIVER

DVD

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

Press
[RECEIVER]
first

You can adjust the level of each speaker in speaker set A
while listening to an input source. These temporary
adjustments are cancelled when the AV receiver is set to
Standby.

CDR

Remote
controller

HDD

CH SEL

VOL

GUIDE
TOP MENU

PREVIOUS
MENU

SP A / B

MUTING

LEVEL-

LEVEL+

Use the remote controller’s
[CH SEL] button to select each
speaker, and use the [LEVEL–]
and [LEVEL+] buttons to adjust
the volume.
You can adjust the volume of each
speaker from –12 dB to +12 dB
(–15 dB to +12 dB for the subwoofer).

ENTER
PLAYLIST

PLAYLIST

RETURN

Notes:
• You cannot use this function while the AV receiver is
muted.
• Speakers that are set to No or None in the Speaker
Configuration cannot be adjusted.

SETUP

LISTENING MODE
STEREO

SURROUND

CH SEL

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

LEVEL – +

PLAY MODE
DISPLAY

RC-645S

■ Speaker Set B
While speaker set B is on, you can also adjust the levels
of the left and right speakers in speaker set B, from
–12 dB to +12 dB.
• These settings are stored when the AV receiver is set
to Standby.
• While speaker set B is on, you can adjust the levels of
the left and right speakers in speaker set A’s and the
subwoofer.
■ Headphones
While a pair of headphones is connected, you can adjust
the volume of the left and right channels individually,
from –12 dB to +12 dB each.

• These settings are stored when the AV receiver is set
to Standby.
■ Multichannel DVD Input
While the multichannel DVD input is selected, you can
adjust the level of each 5.1 channel input individually,
from –12 dB to +12 dB. (–30 to +12 dB for the subwoofer.)
• These settings are stored when the AV receiver is set
to Standby.
• Individual speaker levels can also be adjusted in
“3. MultiLevel Setup” (see page 53).

TX-SR304_En.book Page 45 Tuesday, February 7, 2006 4:57 PM

Using the Listening Modes
Selecting Listening Modes
See “About the Listening Modes” on page 46 for
detailed information about the listening modes.

Selecting on the AV receiver
TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

• The Dolby Digital and DTS listening modes
can only be selected if your DVD player is
connected to the AV receiver with a digital
audio connection (coaxial or optical).
• Listening mode availability depends on the
format of the current input signal.
• While a pair of headphones is connected,
you can select only the Mono, Direct, or Stereo listening mode.
• While speaker B is on, you can select only
the Direct or Stereo listening mode.
• The listening modes cannot be selected
while speaker set A is off.

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR
PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

STEREO
LISTENING MODE

■ [STEREO] button
This button selects the Stereo listening mode.
■ LISTENING MODE [ ]/[ ] buttons
Pressing these buttons repeatedly cycles through all
of the listening modes that can be used with the current input source.

Selecting with the Remote Controller
PLAYLIST

PLAYLIST

RETURN

SETUP

SURROUND
LISTENING MODE

STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

PLAY MODE
DISPLAY

RC-645S

■ [STEREO] button
This button selects the Stereo listening mode.
■ [SURROUND] button
This button selects the Dolby Digital and DTS listening modes.
■ LISTENING MODE [ ]/[ ] buttons
Pressing these buttons repeatedly cycles through all
of the listening modes that can be used with the current input source.

TX-SR304_En.book Page 46 Tuesday, February 7, 2006 4:57 PM

Using the Listening Modes—Continued
About the Listening Modes
With its built-in surround-sound decoders and DSP programs, the AV receiver can transform your home listening room into a movie theater or concert hall.
This illustration shows which speakers are active in
each listening mode.
Front left

Center

Front right

Subwoofer
Surround
left

Surround
right

Direct

The selected input source is output directly with minimal
processing for a pure sound.

player in order to enjoy DTS material. Use this mode
with DVDs and CDs that bear the DTS logo.
Neo:6

This mode provides 5.1-channel playback from 2-channel sources. It offers five full-bandwidth channels with
excellent separation. There are two modes of operation:
Cinema mode for movies, and Music mode for listening
to music.
Cinema mode simulates the realistic sense of movement
that you get with 5.1-channel surround sound sources.
Use this mode with videos, DVDs, and TV shows that
feature stereo sound.
Music mode uses the surround channels to simulate a
natural sound field that cannot be produced with conventional stereo. Use this mode with stereo material such as
music CDs.

Stereo

The selected input source is processed as a stereo signal
and output by the front left and right speakers and the
subwoofer.
Mono

Use this mode when watching an old movie with a mono
soundtrack, or to select multilingual soundtracks
recorded in the left and right channels of some movies.
It can also be used when playing a DVD or other source
with multiplexed audio, such as a karaoke DVD.
Dolby Pro Logic II Movie

Use this mode with DVDs and videos that bear the Dolby Surround
logo or TV shows that feature Dolby Surround. You can
also use this mode with stereo movies or TV shows and
the AV receiver will create a 5.1 surround mix from the
2-channel stereo.
Dolby Pro Logic II Music

Use this mode to add 5.1 surround to stereo sources such
as music CDs and DVDs.
Dolby Pro Logic II Game

Use this mode when playing game discs.
Dolby Digital

With this format you can experience the
same superb sound that you get at a movie
theater or concert hall. Use this mode with DVDs that
bear the Dolby Digital logo.
DTS

This digital surround format offers a surround sound experience with exceptional
fidelity. It uses compressed digital audio
data, with six discrete channels (5.1), and the
ability to handle large amounts of audio data while
remaining faithful to the original. DTS provides very
high-quality sound. You’ll need a DTS compatible DVD

Onkyo Original DSP Modes
Mono Movie

This mode is suitable for use with old movies and other
mono sound sources. The center speaker outputs the
sound as it is, while reverb is applied to the sound output
by the other speakers, giving presence to even mono
material.
Orchestra

Suitable for classical or operatic music. The surround
channels are emphasized in order to widen the stereo
image. In addition, it simulates the natural reverberation
of a large hall.
Unplugged

Suitable for acoustic instrument sounds, vocals, and jazz
music. By emphasizing the front stereo image, it simulates the stage-front experience.
Studio-Mix

Suitable for rock and pop music. Listening to music in
this mode creates a lively sound field with a powerful
acoustic image, like being at a club or rock concert.
TV Logic

Adds realistic acoustics to TV shows produced in a TV
studio. In addition, it adds surround effects to the entire
sound and adds clarity to voices.
All Ch Stereo

Ideal for background music. The front, surround, and
surround back channels create a stereo image that fills
the entire listening area.
Full Mono

In this mode, all speakers output mono audio, so the
music sounds the same regardless of where you are.

TX-SR304_En.book Page 47 Tuesday, February 7, 2006 4:57 PM

Using the Listening Modes—Continued
The following table lists all the listening modes and shows which modes can be selected for each input signal format.
DTS/DTS 96/24*2

Dolby D
Analog,
PCM*1

Input signal format

Source

Listening mode

*/2

CD, TV, VHS,
MD,
turntable,
radio,
cassette,
DTV, etc.

2/0
1/0,1+1
(Stereo)

Other

3/2.1

DVD, DTV, etc.

DTS-ES
2/0
(Stereo) Discrete Matrix

DVD, CD, etc.

DVD

Direct

✔

Stereo
Mono

✔

Multich
PLII Movie/Music/Game
Neo:6 Cinema
Neo:6 Music *3

✔

Dolby D

✔
✔

DTS

Onkyo
Original
DSP

Multich

Mono Movie
Orchestra
Unplugged
Studio-Mix
TV Logic
All Ch Stereo
Full Mono

✔

*1. In the Direct listening modes, PCM signals at 32 kHz, 44.1 kHz, and 48 kHz are processed at 64 kHz, 88.2 kHz, and 96 kHz
respectively. 96 kHz signals are processed at 48 kHz for all listening modes other than Direct, and Stereo.
*2. DTS 96/24 is always processed as DTS.
*3. Available only when Surround speakers are connected.

Tip: You can check the format of the digital input signal on page 37, “Displaying Source Information.”

TX-SR304_En.book Page 48 Tuesday, February 7, 2006 4:57 PM

Adjusting the Listening Modes
2
ON/STANDBY

Use the Up and Down [ ]/[ ]
buttons to select “4. Audio
Adjust,” and then press the
[ENTER] button.

REMOTE MODE

RECEIVER

DVD

RECEIVER

TAPE

INPUT SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

CDR

ENTER
HDD

VOL

Use the Left and Right [ ]/[ ]
buttons to change the settings.
Press the Down [ ] button to
select the next setting.

Repeat step 3 to complete all settings.

Press the [SETUP] button.
Setup closes.
When you want to go back up one
menu level to “Audio Adjust,” press the
[RETURN] button.

PREVIOUS
MENU

GUIDE
TOP MENU

SP A / B

MUTING

ENTER

ENTER
PLAYLIST

PLAYLIST

SETUP

RETURN
RETURN

SETUP

LISTENING MODE
STEREO

SURROUND

AUDIO SUBTITLE RANDOM REPEAT
TEST TONE

CH SEL

LEVEL-

LEVEL+

L NIGHT

CINE FLTR

PLAY MODE
DISPLAY

CINE FLTR
L NIGHT

RC-645S

SETUP

The Audio Adjust functions are explained below.

Input Channel Settings

Using the Audio Adjust Functions
Some functions are not available with all speaker configurations.
Audio Adjust provides various functions for adjusting
the sound.

1
RECEIVER

SETUP

Press the [RECEIVER] button followed by the [SETUP] button.

■ Multiplex
This setting determines which channel is output from a
stereo multiplex source. Use it to select audio channels
or languages with multiplex sources, multilingual TV
broadcasts, and so on.
Main: The main channel is output (default).
Sub: The sub channel is output.
M/S: Both the main and sub channels are output.
■ Mono (2ch)
This setting determines which channel is output when
the Mono listening mode is used with a stereo source.
L+R: Both the left and right channels are output
(default).
L: Only the left channel is output.
R: Only the right channel is output.

TX-SR304_En.book Page 49 Tuesday, February 7, 2006 4:57 PM

Adjusting the Listening Modes—Continued
PL II Music Mode Settings
These settings apply to only 2-channel (stereo) sources.
■ Panorama
With this function, you can broaden the width of the
front stereo image when using the Pro Logic II Music
listening mode.
On: Panorama function on.
Off: Panorama function off (default).
■ Dimension
With this setting, you can move the sound field forward
or backward when using the Pro Logic II Music listening
mode. The default setting is 3. It can be adjusted from 0
to 6. Higher settings move the sound field forward.
Lower settings move it backward.
If the stereo image feels too wide, or there’s too much
surround sound, move the sound field forward to
improve the balance. Conversely, if the stereo image
feels like it’s in mono, or there’s not enough surround
sound, move it backward.
■ Center Width
This setting has an effect when you use a center speaker.
With this function, you can adjust the width of the sound
from the center speaker when using the Pro Logic II
Music listening mode normally. If you’re using a center
speaker, the center channel sound is output by only the
center speaker. (If you’re not using a center speaker, the
center channel sound will be distributed to the front left
and right speakers to create a phantom center). This setting controls the front left, right, and center mix, allowing you to adjust the weight of the center channel sound.
It can be adjusted from 0 to 7 (default is 3).

DTS Neo:6 Music Mode Setting
■ Center Image
This setting has an effect when you use a center speaker.
The DTS Neo:6 Music listening mode creates 5-channel
surround sound from 2-channel (stereo) sources. With
this setting, you can specify by how much the front left
and right channel output is attenuated in order to create
the center channel. It can be adjusted from 0 to 5 (default
is 2). This setting is unavailable if no surround speakers
are connected.
When set to 0, the front left and right channel output is
attenuated by half (–6 dB), giving the impression that the
sound is located centrally. This setting works well when
the listening position is considerably off center. When
set to 5, the front left and right channels are not attenuated, maintaining the original stereo balance.

Using the Late Night Function
(Dolby Digital only)
With the Late Night function, you can reduce the
dynamic range of Dolby Digital material so that you can
still hear quiet parts even when listening at low volume
levels—ideal for watching movies late at night when you
don’t want to disturb anyone.

RECEIVER

L NIGHT

Press the [RECEIVER] button,
and then press the [L NIGHT] button repeatedly to select:
Off: Late Night function off.
Low: Small reduction in dynamic
range.
High: Big reduction in dynamic
range.

Notes:
• The effect of the Late Night function depends on the
Dolby Digital material that you are playing, and with
some material there will be little or no effect.
• The Late Night function is set to Off when the AV
receiver is set to Standby.

Using the CinemaFILTER
With the CinemaFILTER, you can soften overly bright
movie soundtracks, which are typically mixed for reproduction in a movie theater.
CinemaFILTER can be used with the following listening
modes: Dolby Digital, Dolby Pro Logic II Movie, DTS,
and DTS Neo:6 Cinema.

RECEIVER

Press the [RECEIVER] button,
and then press the [CINE FLTR]
button repeatedly to select:
On: CinemaFILTER on.
Off: CinemaFILTER off.

CINE FLTR

TX-SR304_En.book Page 50 Tuesday, February 7, 2006 4:57 PM

Recording
This chapter explains how to record the selected input
source to an AV component with recording capability,
and how to record audio and video from two different
sources.

Recording the Input Source
You can record only to AV components that are connected to the TAPE OUT or VIDEO 1 OUT jacks.
See pages 22–31 for information on connecting your AV
components to the AV receiver.

1
DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

Remote
controller

Use the input selector buttons to
select the AV component that
you want to record.
Audio signals from the selected input
source are output by the VIDEO 1 OUT
and TAPE OUT jacks.
You can listen to the source while
recording. The AV receiver’s VOLUME control has no effect on recording.

Recording from Different AV Sources
With this function, you can record audio and video from
different sources, allowing you to overdub audio onto
your video recordings. This function takes advantage of
the fact that when an audio-only input source (i.e.,
TAPE, TUNER, or CD) is selected, the video input
source remains unchanged. For example, if you first
select the VIDEO 3 input source, followed by the CD
input source, you can watch the video from the VIDEO 3
input and listen to the audio from the CD input.
In the following example, audio from the CD player connected to the CD IN jacks, and video from the camcorder
connected to the VIDEO 3 IN jack are recorded by the
VCR, which is connected to the VIDEO 1 OUT jacks.

Camcorder

video signal
audio signal

DVD

TAPE

TUNER

Start recording on the AV component connected to the TAPE OUT
or VIDEO 1 OUT jacks.

Start playback on the source AV
component.

Notes:
• You cannot record from AV components that are connected to the digital inputs. You must use analog connections.
• The surround effects produced by the surround and
DSP listening modes cannot be recorded.
• You cannot record from an AV component that is connected to the multichannel input.
• If you select another input source while recording, that
input source will be recorded instead.

CD player

VCR

1. Prepare the camcorder and CD player
for playback.
2. Prepare the VCR for recording.
3. Press the [VIDEO 3] input selector button.
4. Press the [CD] input selector button.
This selects the CD player as the audio source, but
leaves the camcorder as the video source.

5. Start recording on the VCR and start
playback on the camcorder and CD
player.
The video from the camcorder and the audio from
the CD player are recorded by the VCR.

TX-SR304_En.book Page 51 Tuesday, February 7, 2006 4:57 PM

Advanced Setup
Advanced Speaker Settings
The advanced speaker settings cannot be
changed while headphones are connected,
Speaker set B is on, or the multichannel input
is being used.

Crossover Frequency
This setting only applies to the speakers that you specified as Small in the “Speaker Configuration” on page 34.
To get the best bass performance from your speaker system, you need to set the crossover frequency according
to the size and frequency response of your speakers.

RECEIVER

Press the [RECEIVER] REMOTE
MODE button, followed by the
[SETUP] button.

SETUP

Use the Up and Down [ ]/[ ]
buttons to select “1. SP Config,”
and then press [ENTER].

Crossover
frequency

Over 8 in.
(20 cm)

40/50/60Hz

6-1/2 to 8 in.
(16–20 cm)

80Hz

5-1/4 to 6-1/2 in.
(13–16 cm)

100Hz (default)

3-1/2 to 5-1/4 in.
(9–13 cm)

120Hz

Under 3-1/2 in.
(9 cm)

150/200Hz*

*Choose the setting suitable for the speaker.

Continue with step 4 of the “Double
Bass” setting below.
Notes:
• For a more accurate setting, look up the frequency
response in the manuals supplied with your speakers
and set accordingly.
• Choose a higher crossover frequency if you want more
sound from your subwoofer.

Double Bass
With the Double Bass function, you can boost bass output by feeding bass sounds from the front left and right
channels to the subwoofer. This function can be set only
if the Subwoofer setting (step 3) is set to Yes, and the
Front setting (step 4) is set to Large in the Speaker Configuration on page 34.

ENTER

Speaker cone
diameter

Use the Down [ ] button to
select “Crossover,” and then use
the Left and Right [ ]/[ ] buttons to select a crossover frequency.
Use the diameter of the smallest
speaker in your system when choosing
the crossover frequency.

Use the Down [ ] button to
select “Double Bass,” and then
use the Left and Right [ ]/[ ]
buttons to select:
On: Double Bass function on.
Bass from the front left and
right channels is also fed to
the subwoofer (default).
Off: Double Bass function off.

Press the [SETUP] button.
Setup closes.
When you want to go back up one
menu level to “SP Config,” press the
[RETURN] button.

SETUP

TX-SR304_En.book Page 52 Tuesday, February 7, 2006 4:57 PM

Advanced Setup—Continued
Speaker Distance
To get the best from surround sound, it’s important that
the sound from each speaker reaches the listener at the
same time. To achieve this, you need to specify the distance from each speaker to the listening position.

1
2

Measure and make a note of the
distance from each speaker to
the listening position.
RECEIVER

Press the [RECEIVER] button followed by the [SETUP] button on
the remote controller.

Notes:
• The Center and Subwoofer distances can be set up to
5 ft. (1.5 m) more or less than the Front distance. For
example, if the Front distance is set to 20 ft. (6 m), the
Center and Subwoofer distances can be set between 15
and 25 ft. (4.5 and 7.5 m).
• The Surround distances can be set up to 5 ft. (1.5 m)
more or 15 ft. (4.5 m) less than the Front distance. For
example, if the Front distance is set to 20 ft. (6 m), the
SurrRight and Surr Left distances can be set between
5 and 25 ft. (1.5 and 7.5 m).

Speaker Levels
SETUP

Use the Up and Down [ ]/[ ]
buttons to select “2. SP Distance,” and then press the
[ENTER] button.

The speaker levels cannot be adjusted while a
pair of headphones is connected, speaker set
B is on, or the AV receiver is muted.

ENTER

With this function, you can adjust the volume of each
speaker so that all speakers can be heard equally at the
listening position.

While “Unit” is displayed, use the
Left and Right [ ]/[ ] buttons to
select “feet” or “meters”.
feet: Distances in feet. Can be set
from 1 to 30 feet in 1-foot
steps.
meters: Distances in meters. Can be
set from 0.3 to 9 meters in
0.3-meter steps.
Use the Down [ ] button to
select “Front,” and use the Left
and Right [ ]/[ ] buttons to
specify the distance for the “front
speakers,” then press the Down
[ ] button to select the next
speaker.

Repeat step 5 for all speakers.
Note:
Speakers that you set to No or None in
the Speaker Configuration (page 34)
cannot be selected.

Press the [SETUP] button.
Setup closes.
When you want to go back up one
menu level to “SP Distance,” press the
[RETURN] button.

RECEIVER

Press the [RECEIVER] button followed by the [SETUP] button on
the remote controller.

SETUP

Use the Up and Down [ ]/[ ]
buttons to select “3. Level Cal,”
and then press the [ENTER] button.
A pink noise test tone is output by the
front left speaker.
ENTER

Turn up the volume so that you
can hear the test tone sufficiently.
While each speaker outputs the test
tone, its name appears on the display, as
shown.

TX-SR304_En.book Page 53 Tuesday, February 7, 2006 4:57 PM

Advanced Setup—Continued

Use the Left and Right [ ]/[ ]
buttons to adjust the speaker
level, and use the Down [ ] button to select the next speaker.
The level can be adjusted from –12 to
+12 dB in 1 dB steps (–15 to +12 dB
for the subwoofer).

Digital Input Signal Formats
The following table shows the display indicators for each
supported digital signal format.
Format

Display

Dolby Digital
DTS
PCM

Repeat step 4 so that the level of
the test tone from each speaker
is the same.
Speakers that you set to No or None in
the Speaker Configuration (page 34) do
not output the test tone.

Press the [SETUP] button.
Setup closes.
Don’t forget to turn down the volume if
you turned it up while setting the levels.
When you want to go back up one
menu level to “Level Cal,” press the
[RETURN] button.

SETUP

Note:
• A quicker way to adjust the speaker levels is to press
the remote controller’s [TEST TONE] button to output
the test tone, use the [LEVEL–] and [LEVEL+] buttons to adjust the levels, and use the [CH SEL] button
to select the speakers.
• If the multichannel input is selected (page 37), in step
2, the “3. MultiLevel” menu appears instead of the
“3. Level Cal” menu, and you can adjust the level of
each channel of the multichannel input regardless of
the Speaker Configuration settings.
You can adjust the volume of each speaker from –
12 dB to +12 dB (–30 dB to +12 dB for the subwoofer).

PCM

Normally, the AV receiver detects the signal format automatically. However, if you experience either of the following issues when playing PCM or DTS material, you
can manually set the signal format to PCM or DTS:
• If the beginnings of tracks from a PCM source are cut
off, try setting the format to PCM.
• If noise is produced when fast forwarding or reversing
a DTS CD, try setting the format to DTS.

TUNING / PRESET

MASTER VOLUME

STANDBY/ON

ENTER

STANDBY

A SPEAKERS B

TONE

STEREO

LISTENING MODE

DISPLAY DIGITAL INPUT

RT/PTY/TP MEMORY TUNING MODE

RETURN

SETUP

CLEAR
PHONES
MULTl CH

DVD

VIDEO 1/VCR

VIDEO 2

VIDEO 3

TAPE

TUNER

DIGITAL INPUT

Press and hold the AV receiver’s [DIGITAL
INPUT] button for about 3 seconds.

While “Auto” is displayed (about 3 seconds), press the [DIGITAL INPUT] button
again to select: PCM, DTS, or Auto.
DTS or PCM: The DTS or PCM indicator,
depending on which format you have set, flashes,
and only signals in that format are output. Digital
signals in other formats are ignored.
Auto (default): The format is detected automatically. If no digital input signal is present, the corresponding analog input is used instead.

TX-SR304_En.book Page 54 Tuesday, February 7, 2006 4:57 PM

Advanced Setup—Continued
Correcting Sound and Picture Sync
When using progressive scanning on your DVD player,
you may find that the picture and sound are out of sync.
With this setting, you can correct this by delaying the
audio signals. You can set it to 0, 20, or 40 milliseconds.
ON/STANDBY

REMOTE MODE

RECEIVER

DVD

TAPE

RECEIVER

INPUT SELECTOR

INPUT
SELECTOR

MULTI CH

DVD

TAPE

TUNER

+10

CLR

--/---

DIMMER

SLEEP

DISC
ALBUM

CDR

HDD

VOL

PREVIOUS
MENU

GUIDE
TOP MENU

SP A / B

MUTING

ENTER
PLAYLIST

RETURN

2
V2

DVD

SETUP

Press the [RECEIVER] REMOTE
MODE button.

RECEIVER

PLAYLIST

Press and hold, for more than 4
seconds, the input selector button for the input source that you
want to correct.
This can be the [DVD], [VIDEO 1],
[VIDEO 2], or [VIDEO 3] input
source.
Use the Left and Right [ ]/[ ]
buttons to set the delay to 0, 20,
or 40 milliseconds.

The previous display reappears if you
don’t do anything for 5 minutes.
Note:
• This setting is not available when the Direct listening
mode is used with an analog input signal.

TX-SR304_En.book Page 55 Tuesday, February 7, 2006 4:57 PM

Troubleshooting
If you have any trouble using the AV receiver, look for a
solution in this section.
If you can’t resolve the issue yourself, try resetting
the AV receiver before contacting your Onkyo dealer.
To reset the AV receiver to its factory defaults,
turn it on and, while holding down the [VIDEO 1]
button, press the [STANDBY/ON] button. “Clear”
will appear on the display and the AV receiver will
enter Standby mode.
VIDEO 1/VCR

STANDBY/ON

Note that resetting the AV receiver will delete your
radio presets and custom settings.

Power

• If the MUTING indicator is shown on the display,
press the remote controller’s [MUTING] button to
unmute the AV receiver (page 43).
• While a pair of headphones is connected to the
PHONES jack, no sound is output by the speakers
(page 42).
• Check the digital audio output setting on the connected device. On some games consoles, such as those
that can play DVDs, the default setting is off.
• With some DVD-Video discs, you need to select an
audio format from a menu.
• If your turntable doesn’t have a phono preamp built-in,
you must connect one between it and the AV receiver.
If your turntable uses an MC cartridge, you must connect an MC head amp, or an MC transformer and a
phono preamp.
• Specify the speaker distances and adjust the individual
speaker levels (pages 52, 53).
• The input signal format is set to PCM or DTS. Set it to
Auto (page 53).

Can’t turn on the AV receiver?
• Make sure that the power cord is properly plugged into
the wall outlet.
• Unplug the power cord from the wall outlet, wait five
seconds or more, then plug it in again.

Only the front speakers produce sound?
• When the Stereo or Mono listening mode is selected,
only the front speakers and subwoofer produce sound.
• Make sure the speakers are configured correctly
(page 34).

The AV receiver turns off as soon as it’s turned
on?
• The amp protection circuit has been activated.
Remove the power cord from the wall outlet immediately. Disconnect all speaker cables and input sources,
and leave the AV receiver with its power cord disconnected for one hour. After that, reconnect the power
cord, and then set the volume to maximum. If the AV
receiver stays on, set the volume to minimum, disconnect the power cord, and reconnect your speakers and
input sources properly. If the AV receiver turns off
when you set the volume to maximum, disconnect the
power cord, and contact your Onkyo dealer.

Only the center speaker produces sound?
• If you use the Pro Logic II Movie or Pro Logic II
Music listening mode with a mono source, such as an
AM radio station or mono TV program, the sound is
concentrated in the center speaker.
• Make sure the speakers are configured correctly
(page 34).

Audio
There’s no sound or it’s very quiet?
• Press the SPEAKERS [A] or [B] button to turn on the
indicator for the speakers that you want to output
sound.
• Make sure that the digital input source is selected
properly (page 33). Press the [DIGITAL INPUT] button repeatedly.
• Make sure that all audio connecting plugs are pushed
in all the way (page 22).
• Make sure that the polarity of the speaker cables is
correct, and that the bare wires are in contact with
metal part of each speaker terminal (pages 18, 19)
• Make sure that the speaker cables are not shorting.
• Check the volume. The AV receiver is designed for
home theater enjoyment and has a wide volume range
for precise adjustment (page 36).

The surround speakers produce no sound?
• When the Stereo or Mono listening mode is selected,
the surround speakers produce no sound (page 45).
• Depending on the source and current listening mode,
not much sound may be produced by the surround
speakers. Try selecting another listening mode.
• Make sure the speakers are configured correctly
(page 34).
The center speaker produces no sound?
• When the Stereo or Mono listening mode is selected,
the center speaker produces no sound (page 45).
• Make sure the speakers are configured correctly
(page 34).
The subwoofer produces no sound?
• The subwoofer outputs no sound while only speaker
set B is on. Turn on speaker set A.
• When you play source material that contains no information in the LFE channel, the subwoofer produces
no sound.
• Make sure the speakers are configured correctly
(page 34).
• If the multichannel DVD input is selected and speaker
set B is on, speaker set A is reduced to 2-channel playback, so the subwoofer outputs no sound.

TX-SR304_En.book Page 56 Tuesday, February 7, 2006 4:57 PM

Troubleshooting—Continued
• On the AV receiver, the subwoofer setting in the
speaker configuration is set to No. Set the subwoofer
setting to Yes.
There’s no sound with a certain signal format?
• Check the digital audio output setting on the connected device. On some games consoles, such as those
that can play DVDs, the default setting is off.
• With some DVD-Video discs, you need to select an
audio output format from a menu.
Can’t get 5.1-channel playback?
• When speaker B is turned on, speaker set A is reduced
to 2.1-channel playback.
The volume cannot be set to 79?
• When the subwoofer volume level is set to a positive
(+) value, the maximum master volume level is
reduced proportionally.
Noise can be heard?
• Using cable ties to bundle audio cables with power
cords, speaker cables, and so on may degrade the
audio performance, so don’t do it.
• An audio cable may be picking up interference. Try
repositioning your cables.
The Late Night function doesn’t work?
• Make sure the source material is Dolby Digital
(page 49).
The DVD analog multichannel input doesn’t
work?
• Check the DVD analog multichannel input connections (page 25).
• To select the DVD analog multichannel input, press
the [MULTI CH] input selector button (page 37).
• Check the audio output settings on your DVD player.
About DTS signals
• When DTS program material ends and the DTS bitstream stops, the AV receiver remains in DTS listening
mode and the DTS indicator remains on. This is to prevent noise when you use the pause, fast forward, or fast
reverse function on your player. If you switch your
player from DTS to PCM, because the AV receiver
does not switch formats immediately, you may not hear
any sound, in which case you should stop your player
for about three seconds, and then resume playback.
• With some CD players, you won’t be able to playback
DTS material properly even though your player is connected to a digital input on the AV receiver. This is
usually because the DTS bitstream has been processed
(e.g., output level, sampling rate, or frequency
response changed) and the AV receiver doesn’t recognize it as a genuine DTS signal. In such cases, you
may hear noise.
• When playing DTS program material, using the pause,
fast forward, or fast reverse function on your player
may produce a short audible noise. This is not a malfunction.

Video
There’s no picture?
• Make sure that all video connecting plugs are pushed
in all the way (page 22).
• Make sure that each video component is properly connected.
• The AV receiver does not convert between formats, so
if a video source component is connected to a component video input, your TV must be connected to the
component video output (page 23).
• On your TV, make sure that the video input to which
the AV receiver is connected is selected.

Tuner
Reception is noisy, stereo FM reception suffers
from hiss, or the FM STEREO indicator doesn’t
appear?
• Relocate your antenna.
• Move the AV receiver away from your TV or computer.
• Listen to the station in mono (page 38).
• When listening to an AM station, operating the remote
controller may cause noise.
• Passing cars and airplanes can cause interference.
• Concrete walls weaken radio signals.
• If nothing improves the reception, install an outdoor
antenna (page 21).

Remote Controller
The remote controller doesn’t work?
• Make sure that the batteries are installed with the correct polarity (page 9).
• Make sure that the remote controller is not too far
away from the AV receiver, and that there’s no
obstruction between the remote controller and the AV
receiver’s remote control sensor (page 9).
• Make sure you’ve selected the correct remote controller mode (page 10).
• Make sure you’ve entered the correct remote control
code.
Can’t control other components?
• Make sure you’ve selected the correct remote controller mode (page 10).
• If you’ve connected an
-capable Onkyo MD
recorder, CD recorder, or next generation HDD-compatible component to the TAPE IN/OUT jacks, or a
DS-A1 Remote Interactive Dock to the VIDEO 3 IN
jacks, for the remote controller to work properly, you
must set the Input Display to MD, CDR, or HDD (see
page 33).
• To control an Onkyo component that’s connected via
, point the remote controller at the AV receiver.

TX-SR304_En.book Page 57 Tuesday, February 7, 2006 4:57 PM

Troubleshooting—Continued
Recording
Can’t record?
• On your recorder, make sure the correct input is
selected.
• To prevent signal loops and damage to the AV
receiver, input signals are not fed through to outputs
with the same name (e.g., TAPE IN to TAPE OUT, or
VIDEO 1 IN to VIDEO 1 OUT).

Others
The sound changes when I connect my headphones?
• When a pair of headphones is connected, the listening
mode is set to Stereo, unless it’s already set to Stereo,
Mono, Direct.
How do I change the language of a multiplex
source?
• Use the “Multiplex” setting on the “4. Audio Adjust”
menu to select Main or Sub (page 48).
The
functions don’t work?
• To use
, you must make an
connection and an
analog audio connection (RCA) between the component and AV receiver, even if they are connected digitally (page 31).

The AV receiver contains a microcomputer for signal processing and control functions. In very rare situations,
severe interference, noise from an external source, or
static electricity may cause it to lockup. In the unlikely
event that this happens, unplug the power cord from the
wall outlet, wait at least five seconds, and then plug it
back in again.
Onkyo is not responsible for damages (such as CD
rental fees) due to unsuccessful recordings caused by
the unit’s malfunction. Before you record important
data, make sure that the material will be recorded correctly.
Before disconnecting the power cord from the wall outlet, set the AV receiver to Standby.

TX-SR304_En.book Page 58 Tuesday, February 7, 2006 4:57 PM

Specifications
Amplifier Section

General

Rated Output Power
North American (FTC)
All channels:
65 watts per channel min. RMS at
8 ohms, 2 channels driven from 20 Hz
to 20 kHz, with no more than 0.7% total
harmonic distortion
All channels:
90 watts per channel min. RMS at
6 ohms, 2 channels driven at 1 kHz,
with no more than 0.9% total harmonic
distortion
European (IEC):
6 ch × 100 W at 6 ohms, 1 kHz, 1ch driven
Maximum Output Power
Asian (JEITA):
6 ch × 120 W at 6 ohms, 1 kHz, 1ch driven
Dynamic Power
160 W + 160 W (3Ω, Front)
125 W + 125 W (4Ω, Front)
85 W + 85 W (8Ω, Front)
THD (Total Harmonic
Distortion)
0.7% (Power Rated)
Damping Factor
60 (Front, 1kHz, 8Ω)
Input Sensitivity and
Impedance
200 mV/ 47 kΩ (LINE)
Output Level and
Impedance
200 mV/ 470 Ω (REC OUT)
Frequency Response
10 Hz–50 kHz/ +1 dB–3 dB (Direct mode)
Tone Control
±10 dB, 80 Hz (BASS)
±10 dB, 20 kHz (TREBLE)
Signal to Noise Ratio
100 dB (LINE, IHF-A)
Speaker Impedance
6Ω– 16Ω

Power Supply
Power Consumption
Stand-by Power
Consumption
Dimensions
(W × H × D)
Weight

Component
Composite

435 × 150 × 369 mm
17-1/8" × 5-7/8" × 14-1/2"
8.4 kg
18.5 lbs.

DVD, VIDEO1, VIDEO2
DVD,VIDEO1,VIDEO2,VIDEO3

■ Video Outputs
Component
Composite

MONITOR
MONITOR,VIDEO1

■ Audio Inputs
Digital Inputs

Multichannel Inputs

Input Sensitivity/Output
Level and Impedance
1 Vp-p /75Ω (Component)
0.7 Vp-p /75Ω (Component PB/CB, PR/CR)
1 Vp-p /75Ω (Composite)
Component Video
Frequency Response
5 Hz–50 MHz

North American: 0.1 W
European: 0.3 W
Asian: 0.3 W

■ Video Inputs

Analog Inputs

Video Section

North American: AC 120 V, 60 Hz
European: AC 230-240 V, 50 Hz
Asian:
AC 220–230 V, 50/60 Hz
North American: 2.3 A
European: 220 W
Asian: 220 W

Optical: 2
Coaxial: 1
DVD (MULTICHANNEL),VIDEO1,
VIDEO2,VIDEO3,TAPE,CD
6

■ Audio Outputs
Analog Outputs
Subwoofer Pre Outputs
Speaker Outputs
Phones

TAPE,VIDEO1
1
SP-A (L, R, C, SL, SR) + SP-B (L, R)
1

Tuner Section
■ FM
Tuning Frequency
Range
Usable Sensitivity
Signal to Noise Ratio
THD
Frequency Response
Stereo Separation

Specifications and features are subject to change without
notice.
North American: 87.5 MHz–107.9 MHz
European: 87.50 MHz–108.00 MHz
Asian: 87.50 MHz–108.00 MHz
Stereo: 22.2 dBf (75Ω IHF)
Mono: 15.2 dBf (75Ω IHF)
Stereo: 67 dB (IHF-A)
Mono: 73 dB (IHF-A)
Stereo: 0.5% (1 kHz)
Mono: 0.3% (1 kHz)
30 Hz–15 kHz / ±1 dB
40 dB (1kHz)

■ AM
Tuning Frequency
Range

Usable Sensitivity
Signal to Noise Ratio
THD

North American: 530 kHz–1710 kHz
European: 522 kHz–1611 kHz
Asian:
522 kHz–1611 kHz at 9 kHz steps
530 kHz–1710 kHz at 10 kHz steps
300 µV
40 dB
0.7%

TX-SR304_En.book Page 59 Tuesday, February 7, 2006 4:57 PM

Memo

TX-SR304_En.book Page 60 Tuesday, February 7, 2006 4:57 PM

Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: 072-831-8023 Fax: 072-831-8124
ONKYO U.S.A. CORPORATION
18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.
Tel: 201-785-2600 Fax: 201-785-2650 http://www.us.onkyo.com/
ONKYO EUROPE ELECTRONICS GmbH
Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY
Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.eu.onkyo.com/
ONKYO EUROPE UK Office
Suite 1, Gregories Court, Gregories Road, Beaconsfield, Buckinghamshire, HP9 1HQ
UNITED KINGDOM Tel: +44-(0)1494-681515 Fax: +44(0)-1494-680452
ONKYO CHINA LIMITED
Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung,
N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039
http://www.ch.onkyo.com/

HOMEPAGE
http://www.onkyo.com/

I0602-2

* 2 9 3 4 4 1 6 1 A *

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