Onkyo A 905Tx Users Manual

A-905TX a-905tx_manual_e

A-905TX to the manual 6086ef36-139a-f354-ad04-9671e9b4300a

2015-01-24

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English

A-905TX

Before using

Integrated Stereo Amplifier

Connections
Preparations

Instruction Manual

INTEGRATED STEREO AMPLIFIER
VOLUME

WIDE RANGE AMP TECHNOLOGY

INPUT

MD

TUNER

TAPE

LINE/ DVD

CDR/PC

STANDBY

DIRECT

BASS
POWER

ON

TREBLE

BALANCE

PHONES

SOURCE DIRECT
DIRECT
TONE

OFF
—

+

—

+

L

R

ACOUSTIC
PRESENCE

OFF / 1 / 2

Operation

CD

STANDBY/ON

A-905TX

Other Information

Before using

Thank you for purchasing ...
Thank you for purchasing the ONKYO A-905TX Integrated Stereo Amplifier.
Please read this manual thoroughly before making any connection or turning on the power. Follow
these instructions to obtain optimum performance and maximum listening enjoyment from your new
A-905TX. Please retain this manual for future reference.

Main Features
•
•
•
•

High-Quality Separate Component
WRAT (Wide Range Amp Technology) Circuit
Processor In/Out, Subwoofer Pre Out
Six-audio Source Inputs

Memory Preservation
This unit does not require memory preservation
batteries. A built-in memory power back-up system preserves the contents of the memory during power failures and even when the unit is unplugged. The unit must be plugged in order to
charge the back-up system.

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

2

• Acoustic Presence Circuit Naturally Enhances the Extreme Low Range
• Source Direct Function
• System Control Remote Controller

The memory preservation period after the unit
has been unplugged varies depending on climate
and placement of the unit. On the average,
memory contents are protected over a period of
a few weeks after the last time the unit has been
unplugged. This period is shorter when the unit
is exposed to a highly humid climate.

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 Safeguards
1.

Read Instructions – All the safety and
operating instructions should be read before
the appliance is operated.

2.

Retain Instructions – The safety and
operating instructions should be retained for
future reference.
Heed Warnings – All warnings on the
appliance and in the operating instructions
should be adhered to.

4.

Follow Instructions – All operating and use
instructions should be followed.

5.

Water and Moisture – The appliance should
not be used near water – for example, near
a bathtub, washbowl, kitchen sink, laundry
tub, in a wet basement, or near a swimming
pool, and the like.

6.

Carts and Stands – The appliance should
be used only with a cart or stand that is recommended by the manufacturer.

6A. An appliance and cart
combination should
be moved with care.
Quick stops, excessive
force, and uneven surfaces may cause the
appliance and cart
combination to overturn.

PORTABLE CART WARNING

11. Polarization – If the appliance is provided with
a polarized plug having one blade wider than
the other, please read the following information:
The polarization of the plug is a safety feature.
The polarized plug will only fit the outlet one
way. If the plug does not fit fully into the outlet, try reversing it. If there is still trouble, the
user should seek the services of a qualified electrician. Under no circumstances should the user
attempt to defeat the polarization of the plug.

Before using

3.

10. Power Sources –␣ The appliance should be
connected to a power supply only of the type
described in the operating instructions or as
marked on the appliance.

12. Power-Cord Protection – Power-supply
cords should be routed so that they are not
likely to be walked on or pinched by items
placed upon or against them, especially near
plugs, convenience receptacles, and the
point where they exit from the appliance.
13. Cleaning – The appliance should be cleaned
only as recommended by the manufacturer.
14. Nonuse Periods – The power cord of the appliance should be unplugged from the outlet
when left unused for a long period of time.

S3125A

7.

Wall or Ceiling Mounting – The appliance
should be mounted to a wall or ceiling only
as recommended by the manufacturer.

8.

Ventilation – The appliance should be situated so that its location or position does not
interfere with its proper ventilation. For example, the appliance should not be situated
on a bed, sofa, rug, or similar surface that
may block the ventilation openings; or if
placed in a built-in installation, such as a
bookcase or cabinet that may impede the
flow of air through the ventilation openings,
there should be free space of at least 20 cm
(8 in.) and an opening behind the appliance.

9.

Heat – The appliance should be situated away
from heat sources such as radiators, heat registers, stoves, or other appliances (including
amplifiers) that produce heat.

15. Object and Liquid Entry – Care should be taken
so that objects do not fall and liquids are not spilled
into the enclosure through openings.
16. Damage Requiring Service – The appliance
should be serviced by qualified service personnel when:
A. The power-supply cord or the plug has
been damaged; or
B. Objects have fallen, or liquid has been
spilled into the appliance; or
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate normally or exhibits a marked change
in performance; or
E. The appliance has been dropped, or the
enclosure damaged.
17. Servicing – The user should not attempt to service the appliance beyond that described in the
operating instructions. All other servicing should
be referred to qualified service personnel.

3

Precautions
1. Warranty Claim
You can find the serial number on the rear panel
of this unit. In case of warranty claim, please report this number.

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

2. Recording Copyright
Recording of copyrighted material for other than
personal use is illegal without permission of the
copyright holder.

IMPORTANT
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.

3. AC Fuse
The fuse is located inside the chassis and is not
user-serviceable. If power does not come on, contact your Onkyo authorized service station.
4. Care
From time to time you should wipe the front and
rear panels and the cabinet with a soft cloth. For
heavier dirt, dampen a soft cloth in a weak solution of mild detergent and water, wring it out dry,
and wipe off the dirt. Following this, dry immediately with a clean cloth. Do not use rough material, thinners, alcohol or other chemical solvents
or cloths since these could damage the finish or
remove the panel lettering.
5. Power
WARNING
BEFORE PLUGGING IN THE UNIT FOR THE FIRST
TIME, READ THE FOLLOWING SECTION CAREFULLY.
The voltage of the available power supply differs
according to country or region. Be sure that the
power supply voltage of the area where this unit
will be used meets the required voltage (e.g., AC
230 V, 50 Hz or AC 120 V, 60 Hz) written on the
rear panel.

Declaration of Conformity
We, ONKYO EUROPE
ELECTRONICS GmbH
INDUSTRIESTRASSE 20
82110 GERMERING,
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.
GERMERING, GERMANY
A.HORIUCHI

ONKYO EUROPE ELECTRONICS GmbH

4

IMPORTANT
A 5 ampere fuse is fitted in this plug. Should the fuse
need to be replaced, please ensure that the replacement fuse has a rating of 5 amperes and that it is approved by ASTA or BSI to BS1362. Check for the ASTA
mark or the BSI mark on the body of the fuse.
IF THE FITTED MOULDED PLUG IS UNSUITABLE FOR
THE SOCKET OUTLET IN YOUR HOME THEN THE
FUSE SHOULD BE REMOVED AND THE PLUG CUT
OFF AND DISPOSED OF SAFELY. THERE IS A DANGER OF SEVERE ELECTRICAL SHOCK IF THE CUT OFF
PLUG IS INSERTED INTO ANY 13 AMPERE SOCKET.
If in any doubt, please consult a qualified electrician.
For Canadian model
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.
Modele pour les Canadien
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.

Table of contents
Connections
Connecting to the ONKYO Separate Collection Series components .................. 6
Connecting to components other than the Separate Collection Series ............ 12
Connecting speaker systems .......................................................................... 15

Preparing the remote controller ...................................................................... 17

Operation
Turning the unit on ........................................................................................
Choosing the required source ........................................................................
Adjusting the sound .......................................................................................
Source Direct function/Muting/Listening with the headphones .......................
Recording ......................................................................................................

18
19
20
21
22

Before using

Preparations

Other Information
Troubleshooting ............................................................................................. 23
Specifications ................................................................................................. 24
Index to parts and controls ............................................................................. 25

Supplied accessories
Check that the following accessories are supplied with this unit.

Remote controller x 1
(RC-456S)

Batteries x 2
(Size AA, R6, or UM-3)

5

Connections

Connecting to the ONKYO Separate Collection Series components
This section introduces you to the other Separate Collection Series system components and their convenient system functions, followed by connecting instructions.
The following Separate Collection Series components are commercially available:
• T-405TX ............ Stereo Tuner
• K-505TX ........... Stereo Cassette Tape Deck
• C-705TX ........... Compact Disc (CD) Player (Not available in U.S. and Canada)
• C-707CHX ........ Compact Disc (CD) Changer (Only available in U.S. and Canada)
• MD-105TX ........ Minidisc (MD) Recorder (Not available in U.S. and Canada)
• CDR-205TX ...... Compact Disc (CD) Recorder (available only in part of Asia)
Note that the available components may vary according to the area.
Combination use of the unit with the above system components enables you to operate the following
convenient functions:
• Auto Power On
– You can turn on the unit by pressing the STANDBY/ON switch on one of the system components.
(The unit's POWER switch must be set to ON.)
– You can turn on all the system components at the same time by pressing the STANDBY/ON switch
on the unit. (The unit's POWER switch must be set to ON.)
You can turn off each component not in use independently afterwards.
• Direct Change
Press the following button on the component you want to operate to switch the unit’s input selector
automatically to that component:
– The play button on the CD player (or changer), MD recorder, or stereo cassette tape deck, or
– The PRESET
/
buttons on the tuner.
• Remote Control Operation
All the system components can be operated using the supplied remote controller. The remote control buttons operate in the same way as the buttons on each component with the same indication.
• Program Timer
You can operate timer playback and recording using T-405TX. (Refer to the T-405TX instruction
manual for more information.)
• Sleep Timer
You can fall asleep to a music/radio program using the timer. (Refer to the T-405TX instruction
manual for more information.)
• CD Dubbing
Simple CD dubbing using a stereo cassette tape deck or MD recorder is possible with the pressing of
a single button (CD dubbing function using an MD recorder is not avalable on the C-707CHX). (Refer
to the K-505TX or MD-105TX Instruction Manual for more information).
• CD/MD Synchro Recording
When using a stereo cassette tape deck, MD recorder or CD recorder to record from the CD player or
when using a stereo cassette tape deck to record from an MD recorder, you can record with simply
starting on a CD player or MD recorder. (Refer to the K-505TX, MD-105TX or CDR-205TX instruction
manual for more information.)

6

• Dubbing a specific track from CD
You can specify a track on a CD and easily dub it to a connected MD recorder or CD recorder. (Refer
to the MD-105TX or CDR-205TX instruction manual for more information.)

Arranging the system components
Combination example 1

Vertical way stacking

Horizontal way stacking
Tuner
(T-405TX)

Stereo cassette tape
deck (K-505TX)

Amplifier – this unit
(A-905TX)

CD player
(C-705TX) or
CD changer
(C-707CHX)

Amplifier – this unit
(A-905TX)
Stereo cassette tape
deck (K-505TX)
CD player
(C-705TX) or
CD changer
(C-707CHX)

Select the tuner T-405TX, CD player C-705TX and MD recorder MD-105TX in addition to this unit.
When you arrange these components, stack them as shown below.
Vertical way stacking

Horizontal way stacking
Tuner
(T-405TX)

MD recorder
(MD-105TX)

Amplifier – this unit
(A-905TX)

Operation

Tuner
(T-405TX)

Preparations

Combination example 2

Connections

Tuner
(T-405TX)

Before using

Select the tuner T-405TX, CD player C-705TX (or CD changer C-707CHX), and stereo cassette tape
deck K-505TX in addition to this unit. When you arrange these components, stack them as shown
below.

MD recorder
(MD-105TX)
Amplifier – this unit
(A-905TX)

CD player
(C-705TX)

Tip

In addition to the above combination examples, you can also connect both the MD recorder MD-105TX
and stereo cassette tape deck K-505TX with the tuner T-405TX, CD player C-705TX, and this unit.

Other Information

CD player
(C-705TX)

7

Connecting to the ONKYO Separate Collection Series components
Connecting to the audio connector
Before connecting
• Do not connect the unit’s AC power cord (mains lead) to a wall outlet (the mains) until you have
completed all the other connections, including
and AC OUTLET connections on page 11 and
“Connecting speaker systems” on page 15.
• On each pair of connectors, a red connector (marked R) corresponds to the right channel, and a
white connector (marked L) to the left channel. Connect white plugs of audio connection cables to
L connectors and connect red plugs of audio connection cables to R connectors.
• Please refer to the instruction manual for each component when you make any connections.
Audio connection cable
To L connector

(White)

(White)

To L connector

To R connector

(Red)

(Red)

To R connector

• Insert the plug securely. If the connection is incomplete, noise or malfunction may result.
Improper connection

Insert completely

• When you use a digital audio optical cable, do not bend it sharply nor coil it tightly.
• Bundling an audio connection cable with the power cord or speaker cord may degrade the sound
quality.
• Be sure to use the
cable, supplied with each component (except for the A-905TX) to connect to
the
remote control connector. If the connection is incomplete, you will be unable to operate the
device using the remote controller.
• CD players and MD recorders use heat-sensitive parts. Do not place them on top of the amplifier.
To connect both the MD recorder MD-105TX and stereo cassette tape deck K-505TX to the
unit:
Connect the MD recorder to the unit following the “Connections for combination example 2” on the
next page and connect the stereo cassette tape deck to the unit following the “Connections for combination example 1.”
The 230-240 V model is shown in the following illustrations.

8

Connections for combination example 1

OUT(REC) IN(PLAY)
L

OUT(REC) IN(PLAY)

L

L

OUTPUT

L

CAUTION:

SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

L

SPEAKERS
OUTPUT

R

REMOTE
CONTROL
AC 230-240V
UNSWITCHED
100W MAX.

L

ANTENNA

L

R

R

AC OUTLET

R

AC 230-240V

CDR/PC

OUT(REC) IN(PLAY)

OUT

50Hz
SWITCHED
100W MAX.

SUBWOOFER
PRE OUT

IN

PROCESSOR

MD

Amplifier
– this unit (A-905TX)

L

R

CDR/PC

MD

INPUT OUTPUT

ANALOG
OUTPUT
AC OUTLET

L

AC 230-240V
UNSWITCHED
100W MAX.
REMOTE
CONTROL

R

(REC)

50Hz

(PLAY)

DIGITAL OUTPUT

L

1

OPTICAL

2

INPUT OUTPUT

"CLASS 1 LASER
PRODUCT"

L

(REC)

REMOTE
CONTROL

(PLAY)

L
D

D

R

R
AC OUTLET
AC 230-240 V
50 Hz
UNSWITCHED
100W MAX.

R

CD player (C-705TX) or
CD changer (C-707CHX)
: Signal flow

Stereo cassette tape
deck (K-505TX)

OUT(REC) IN (PLAY)

L

L

R

Tuner (T-405TX)

OUT(REC) IN (PLAY)

OUTPUT

Amplifier
– this unit (A-905TX)

R

TAPE

TUNER LINE/DVD

OUT(REC) IN (PLAY)
L

OUT(REC) IN (PLAY)

CAUTION:

OUTPUT

FM
75

L

L

AC OUTLET
AC 230-240V
UNSWITCHED
100W MAX.

ANTENNA

SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

L

SPEAKERS

50Hz

R

R
REMOTE
CONTROL
OUT(REC) IN (PLAY)

TAPE

TUNER LINE/DVD

R

OUT(REC) IN (PLAY)

R

L
AC OUTLET

R

R

AC 230-240V

CDR/PC

CD

MD

OUT

IN

PROCESSOR

50Hz
SWITCHED
100W MAX.

SUBWOOFER
PRE OUT

R

CDR/PC

MD

ANALOG

DIGITAL OUTPUT
1

L

OPTICAL

INPUT
(REC)

OUTPUT
(PLAY)

DIGITAL INPUT
OPTICAL

2

R

L

L

R

R

1

ANALOG
OUTPUT
AC OUTLET

L

R

AC 230-240V
UNSWITCHED
100W MAX.
REMOTE
CONTROL

50Hz

ANALOG
INPUT
(REC)

DIGITAL OUTPUT
1

OPTICAL

2

CD player (C-705TX)
: Signal flow

OUTPUT
(PLAY)

REMOTE
CONTROL

DIGITAL INPUT
OPTICAL

"CLASS 1 LASER
PRODUCT"

L

L

R

R

1

2

MD recorder (MD-105TX)
Optical cable

2

Other Information

ANALOG
OUTPUT

CD

Operation

REMOTE
CONTROL

L

L

Preparations

Connections for combination example 2

Connections

ANALOG
OUTPUT

CD

Before using

OUT(REC) IN(PLAY)

Tuner (T-405TX)

CD

TAPE

TUNER LINE/DVD
R

R

50Hz

R

FM
75

R
REMOTE
CONTROL
OUT(REC) IN(PLAY)

TAPE

TUNER LINE/DVD
OUT(REC) IN(PLAY)

AC OUTLET

L

9

Connecting to the ONKYO Separate Collection Series components
Connecting a CD Recorder CDR-205TX:
ANALOG
INPUT
(REC)

OUT(REC) IN(PLAY)

REMOTE
CONTROL

OUTPUT
(PLAY)

L

L

OUT(REC) IN (PLAY)

DIGITAL

L

OPTICAL

L

INPUT 1

INPUT 2

OUTPUT

L

L

R

R

INPUT
(REC)

CAUTION:

REMOTE
TAPE
CONTROL
OUT(REC) IN(PLAY)

TUNER LINE/DVD

REMOTE
CONTROL

OUTPUT
(PLAY)

SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

SPEAKERS

ANALOG

OUT(REC) IN(PLAY)

DIGITAL

R

OPTICAL

INPUT 1

L

L

INPUT 2

L

OUTPUT

AC OUTLET

R

K

R

R

R

R

R

AC 230-240V

CDR/PC

L

CDR/PC

CD Recorder
(CDR-205TX)

CD

MD

IN

OUT

PROCESSOR

50Hz
SWITCHED
100W MAX.

SUBWOOFER
PRE OUT

CD

Amplifier – this unit
(A-905TX)

: Signal flow

Connecting a processor such as ED-205:

L

OUT(REC) IN(PLAY)

S VIDEO

VIDEO

SUB WOOFER
PRE OUT

CENTER
IN
VIDEO-1

OUT
IN
VIDEO-2

IN
VIDEO-1

OUT
IN
VIDEO-2

IN
MONITOR
VIDEO-1
OUT

OUT
IN
VIDEO-2

REMOTE
CONTROL

R

FRONT

L

R

MONITOR OUT
CENTER

CAUTION:

SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

REMOTE
TAPE
CONTROL
OUT(REC) IN(PLAY)

TUNER LINE/DVD
OUT(REC) IN(PLAY)

L

R

L

CAUTION:
SPEAKER

R

IN
OUT
PROCESSOR

L

R

SPEAKERS

SURROUND
L

IN
OUT
PROCESSOR

IMPEDANCE
6 OHMS MIN.
SUB/SPEAKER
WOOFER
MULTI
CHANNEL INPUT

AC OUTLET

SPEAKERS

R

FRONT SURROUND

IN

PROCESSOR

Processor
(e.g. ED-205)

AC 230-240V

CDR/PC

OUT

CD

MD

OUT

IN

PROCESSOR

SUBWOOFER
PRE OUT

50Hz
SWITCHED
100W MAX.

SUBWOOFER
PRE OUT

Amplifier – this unit
(A-905TX)

: Signal flow

Note:
Jumper plugs have been installed on the A-905TX’s PROCESSOR connectors. To connect an AV surround processor, such as ED-205, remove the jumper plugs, then connect pin cables (see page 13).

10

Connecting the

connectors and AC OUTLETS

Connections

Stereo cassette tape
deck (K-505TX) or
MD recorder (MD105TX)
(The illustration is
MD-105TX.)

(REC)

(PLAY)

REMOTE
CONTROL

REMOTE
CONTROL

AC OUTLET

L

AC 230-240V
UNSWITCHED
100W MAX.

D

ANTENNA

50Hz

R

FM
75

R
AC OUTLET

Tuner (T-405TX)

AC 230-240 V
50 Hz
UNSWITCHED
100W MAX.

AC 230-240V
UNSWITCHED
100W MAX.
REMOTE
CONTROL

TUNER LINE/DVD

OPTICAL

2

SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

SPEAKERS

"CLASS 1 LASER
PRODUCT"

Amplifier – this unit
(A-905TX)

R

R

OUT(REC) IN(PLAY)

1

CAUTION:

L

50Hz

DIGITAL OUTPUT

REMOTE
CONTROL
OUT(REC) IN(PLAY)

TAPE

R

L
AC OUTLET

R

AC 230-240V

CDR/PC

CD

MD

OUT

IN

PROCESSOR

50Hz
SWITCHED
100W MAX.

SUBWOOFER
PRE OUT

connector to an available

If you connect the power cord as shown below, you can turn off the power to the entire system by
simply turning off the POWER switch on the amplifier A-905TX.
Note:

K-505TX or
MD-105TX

T-405TX
OUTPUT
REMOTE
CONTROL

INPUT OUTPUT
(REC)

(PLAY)

REMOTE
CONTROL

AC OUTLET

L

AC 230-240V
UNSWITCHED
100W MAX.

L
D

ANTENNA

R

50Hz

R

FM
75

AC OUTLET
AC 230-240 V
50 Hz
UNSWITCHED
100W MAX.

C-705TX or
C-707CHX

A-905TX
L

L

R

R

AC OUTLET

L

R

L

OUT(REC) IN(PLAY)

ANALOG
OUTPUT

REMOTE
CONTROL

AC 230-240V
UNSWITCHED
100W MAX.

DIGITAL OUTPUT

TUNER LINE/DVD

OPTICAL

OUT(REC) IN(PLAY)

1

2

"CLASS 1 LASER
PRODUCT"

To wall
outlet

CAUTION:

SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

SPEAKERS

50Hz

REMOTE
TAPE
CONTROL
OUT(REC) IN(PLAY)

R

L
AC OUTLET

R

AC 230-240V

CDR/PC

CD

MD

OUT

IN

PROCESSOR

SUBWOOFER
PRE OUT

50Hz
SWITCHED
100W MAX.

Other Information

If the system is connected so that
you can use the tuner’s T-405TX
Clock/Timer function, turning off
the power to the entire system will
turn off the power to the tuner,
and the Clock and Timer functions
will no longer function. If you wish
to use the clock or Timer function,
leave the POWER switch set to
ON.

Operation

Note:
If you have a CD Recorder CDR-205TX, connect the CDR-205TX’s
connector on the A-905TX.

Preparations

L

AC OUTLET

L

R

L

OUT(REC) IN(PLAY)

ANALOG
OUTPUT

CD player (C-705TX)
or
CD changer (C707CHX)

To wall outlet

OUTPUT

INPUT OUTPUT

L

Connections

To use the Clock/Timer function of the tuner T-405TX’s, connect the power cord as shown below and
connect the
cable and audio connection cables (see page 9, 10). Be sure to connect the power cord
of the T-405TX to an AC outlet that supplies continuous power. Also, turn on the POWER switch on the
A-905TX to use the Timer function.

Before using

Before connecting
• The hookups on page 9, 10 is needed in addition to the
(for remote control operations) and AC
OUTLET (for power supply to each component) hookups on this page.
• Each component has two
connectors. There is no difference between those connectors. The
components may be connected in any order.
• The
cable for connecting the
connectors is supplied with each component (not supplied with
the unit).

11

Connecting to components other than the
Separate Collection Series
Connecting audio/video equipment to audio connectors
Before connecting
• Do not connect the AC power cord (mains lead) to the wall outlet (the mains) until you have completed all the other connections including the sound processor connections on the next page, the
connections on page 14, and the speaker connections on page 15.
• On each pair of connectors, a red connector (marked R) corresponds to the right channel, and a
white connector (marked L) to the left channel.Connect white plugs of audio connection cables to L
connectors and connect red plugs of audio connection cables to R connectors .
Audio connection cable
To L connector

(White)

(White)

To L connector

To R connector

(Red)

(Red)

To R connector

• Please refer to the instruction manual for each component when
you make any connections.
• Insert the plug securely. If the connection is incomplete, noise
or malfunction may result.
• If you are using an audio optical cable, do not bend or wrap it
tightly.

Improper connection

Insert completely

Connections
Stereo cassette
tape deck

DVD player or
VCR, etc.

Tuner
AUDIO
OUT

AUDIO OUT

REC
INPUT

Amplifier
– this unit (A-905TX)

OUT(REC) IN(PLAY)

L

PLAY
OUTPUT

L

OUT(REC) IN(PLAY)

L

L

CAUTION:
SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

L

SPEAKERS
R

R

REMOTE
CONTROL
OUT(REC) IN(PLAY)

TAPE

TUNER LINE/DVD
OUT(REC) IN(PLAY)

R

R

L

R

AC OUTLET

R

TAPE

TUNER LINE/DVD
OUT(REC) IN(PLAY)

AC 230-240V

CDR/PC

CD

MD

OUT

IN

PROCESSOR

50Hz
SWITCHED
100W MAX.

SUBWOOFER
PRE OUT

OUT(REC) IN(PLAY)

(illustration is 230-240 V model)

L

R

CDR/PC

CD

MD

OUT

IN

PROCESSOR

Sound processor
(such as a signal processor and
a graphic equalizer)

: Signal flow

OUTPUT

CD recorder or audio
processor for PC

12

OUTPUT

CD player

REC
INPUT

PLAY
OUTPUT

MD recorder

About the LINE/DVD connector
You can connect this connector to the audio output of video devices, such as a DVD player, Satelite
tuner, VCR, or the audio output of a second CD player or tape deck.

About the CDR/PC, MD, and TAPE connectors

About the processor’s connectors
You can connect a sound processor (e.g. graphic equalizer, surround processor, etc.) to the unit.

Note:
When connecting jumper plugs, make sure you hold the plugs horizontally as shown in the figure and
connect each plug to the IN and OUT jacks.

Jumper plug

Operation

IN

R

SO
CES

OUT

PRO

Connect the sound processor to the unit.

This unit
L

L

R

R

INPUT

L

OUT(REC) IN (PLAY)

Preparations

Before connecting
• Disconnect the jumper plugs using the PROCESSOR connectors.
– Please retain them for future use.
– Never connect the jumper plugs to the other connectors, as this may cause the unit to malfunction, so that the sound is not reproduced.
– If you do not use the PROCESSOR connectors, reconnect the jumper plugs to them firmly.

Connections

You can also connect a second MD recorder or tape deck to the CDR/PC connector, and/or connect a
second device to the MD or TAPE connector. (If you try to connect an Onkyo tape deck, MD recorder, or
CD recorder that has
connectors in this way, a malfunction may occur. Do not use the
cables for
connections.)
You can connect a digital audio processor for a personal computer to the CDR/PC connector.

Before using

Note:
You cannot connect a turntable to this connector. If you wish to connect a turntable, obtain a phono
equalizer at a store and connect it as described in the instruction manual that comes with the phono
equalizer.

CAUTION:
SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

SPEAKERS

REMOTE
CONTROL
OUT(REC) IN (PLAY)

TAPE

TUNER LINE/DVD
OUT(REC) IN(PLAY)

Sound processor

R

L

AC 230-240V

CDR/PC

CD

MD

OUT

IN

PROCESSOR

SUBWOOFER
PRE OUT

50Hz
SWITCHED
100W MAX.

OUTPUT
OUT(REC)

IN(PLAY)

L

R

TUNER

CD

MD

OUT

IN

PROCESSOR

SUBWOOFER
PRE OUT

Other Information

AC OUTLET

R

: Signal flow

13

Connecting to components other than the Separate Collection Series
Connecting the

cables

If your other components are made by ONKYO and those components are equipped with
-connected components with the supplied remote controller.
tors, you can control the

connec-

Before connecting
• The unit must be connected in the
system hookups for
control operations.
connectors. There is no difference between these connectors.
• Each component has two
• The components may be connected in any order.
system hookups.
• The hookups on the previous page are necessary independently of the
The illustration below is an example of a

hookup.

Connections
Tuner

Amplifier
– this unit
cable (supplied with every ONKYO
connectors
component that has
except for the amplifier and receiver)

MD recorder

Stereo cassette
tape deck

CD player

AC outlet connection

14

You can connect the power cord from another audio device to the rear of the A905TX.
Since the AC outlet on the unit is a
SWITCHED type outlet, you can use the
POWER switch to turn on/off the power
to both the A-905TX and the connected
audio device.
The shape and capacity of the AC outlet
may differ depending on the area of purchase. Make sure that the capacity of other
components connected to this unit does not
exceed the capacity that is printed on the
rear panel.

L

OUT(REC) IN(PLAY)

L

CAUTION:
SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

L

SPEAKERS
R

R

REMOTE
TAPE
CONTROL
OUT(REC) IN(PLAY)

TUNER LINE/DVD
OUT(REC) IN(PLAY)

R

L
AC OUTLET

R

AC 230-240V

CDR/PC

CD

MD

OUT

IN

PROCESSOR

SUBWOOFER
PRE OUT

50Hz
SWITCHED
100W MAX.

230-240 V, 50 Hz models

120 V, 60 Hz models

Capacity is 100 watts.

Capacity is 120 watts.

Connecting speaker systems
Connecting left and right speakers

NO

NO

L

SPEAKERS

L

SPEAKERS

R

R

Note

2 Twist the stripped end
of the cord.

NO

15mm

Preparations

To prevent damage to circuits
never short-circuit
the positive (+)
and negative (–)
speaker wires.

Connecting the speaker cords to the speaker connectors
L

Left
speaker

SPEAKERS

-

-

R

+

+
L

OUT(REC) IN (PLAY)

L

CAUTION:
SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

L

SPEAKERS
R

R

REMOTE
CONTROL
OUT(REC) IN (PLAY)

TAPE

TUNER LINE/DVD
OUT(REC) IN (PLAY)

Operation

Right
speaker

Connections

Preparing the speaker cords for connection
1 Strip 15 mm from
the end of each
cord.

Before using

Before connecting
• The load impedance of each speaker must be at least 4 ohms.
• Do not use unnecessarily long or extremely thin speaker cords. Otherwise, the DC resistance of the
speaker cords may become too high, lowering the damping factor and causing the sound quality to
deteriorate.
• Do not connect the speaker cord to the L and R connectors at the same time and do not connect two
or more speakers to the same speaker connectors.

R

L
AC OUTLET

R

AC 230-240V

CDR/PC

MD

OUT

IN

PROCESSOR

SUBWOOFER
PRE OUT

2 Insert the stripped end
of the cord.

50Hz
SWITCHED
100W MAX.

This unit

3 Turn the knob clockwise to tighten.

Other Information

1 Turn the knob counterclockwise to loosen.

CD

15

Connecting speaker systems
Connecting a subwoofer
Before connecting
• If your subwoofer isn’t equipped with an amplifier, connect a separate amplifier to the unit first, then
connect the subwoofer to that amplifier.
• The SUBWOOFER PRE OUT connector supplies the left and right mixed monaural signals to the
subwoofer.

Connections
This unit
L

OUT(REC) IN (PLAY)

L

L

R

R

CAUTION:
SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

SPEAKERS

REMOTE
CONTROL
OUT(REC) IN (PLAY)

TAPE

TUNER LINE/DVD
OUT(REC) IN(PLAY)

When connecting a subwoofer with a
built-in amplifier

R

L
AC OUTLET

R

AC 230-240V

CDR/PC

CD

MD

OUT

IN

PROCESSOR

50Hz
SWITCHED
100W MAX.

SUBWOOFER
PRE OUT

Audio connection cable

Active
Subwoofer

or
OUT

IN

PROCESSOR

SUBWOOFER
PRE OUT

Audio connection cable

When connecting a subwoofer with
no built-in amplifier

Amplifier

16

Subwoofer

Preparations

Preparing the remote controller
Installing the remote controller
batteries

1 Remove the battery compartment

Point the remote controller toward
the remote control sensor.
The STANDBY indicator lights up when the unit
receives a signal from the remote controller.
Remote control
sensor

INTEGRAT

ED STEREO

AMPLIFIE

R

VOLUME

STANDBY
/ON
CD

MD

WIDE RANGE

TUNER
TAPE

AMP TECHNOLOG
Y

STANDBY

INPUT
LINE/ DVD

POWER

CDR/PC

BASS

PHONES

TREBLE
ON

BALANCE

SOURCE

+

DIRECT
DIRECT

+
L

30˚

X

• Place the unit away from strong light such as
direct sunlight or inverted fluorescent light which
can prevent proper operation of the remote
controller.
• Using another remote controller of the same
type in the same room or using the unit near
equipment which uses infrared rays may cause
operational interference.
• Do not put any object such as a book on the
remote controller. The buttons of the remote
controller may be pressed by mistake and drain
the batteries.
• Make sure the audio rack doors do not have
colored glass. Placing the unit behind such doors
may prevent proper remote controller operation.
• If there is any obstacle between the remote controller and the remote control sensor, the remote controller will not operate.

Operation
Other Information

• Do not mix new batteries with old batteries or
different kinds of batteries.
• To avoid corrosion, remove the batteries if the
remote controller is not to be used for a long time.
• Remove dead batteries immediately to avoid
damage from corrosion. If the remote controller doesn’t operate smoothly, replace both the
batteries at the same time.
• The life of the batteries supplied is about six
months but this will vary depending on usage.

Notes

Preparations

Notes

Control range

m
t5 )
u
o et
Ab 6 fe
(1

Connections

3 Replace the compartment cover.

ACOUSTI
PRESENCC
E

A-905T

2 Insert two AA (R6 or UM-3)-size
Carefully follow the polarity diagram (positive + and negative - symbols) inside the
battery compartment.

TONE
R

ON / BOOST

30˚

batteries into the battery compartment.

DIRECT

OFF

Before using

cover by pressing and sliding it
away from the remote controller
unit.

Using the remote controller

17

Operation

Turning the unit on
STANDBY/ON

STANDBY/ ON
CLOCK

SLEEP

GRAPHIC EQ
EFFECT
MODE

INTEGRATED STEREO AMPLIFIER
VOLUME

WIDE RANGE AMP TECHNOLOGY

INPUT

CD

STANDBY/ON

MD

TUNER

TAPE

LINE/ DVD

CDR/PC

STANDBY

DIRECT

BASS
POWER

TREBLE

SOURCE DIRECT
DIRECT

BALANCE

PHONES

TONE

Power/muting
lamp
VOLUME

TUNER INPUT

PRESET
FM

AM

TAPE

PAUSE / STEP

REPEAT

STANDBY/
ON

MD

SCROLL

PLAY MODE CLEAR

REPEAT

DVD

REC

CD

RANDOM

ACOUSTIC
PRESENCE
MEMORY

CLEAR
DISC

ON

OFF
—

+

—

+

L

OFF / 1 / 2

R

CDR

REPEAT PLAY MODE

A-905TX
TONE

CLEAR

TIMER

1

2

3

4

5

6

7

8

REC

MUTING

POWER switch
STANDBY indicator

UP/DOWN

9

VOLUME

ACOUSTIC
PRESENCE

Before turning the unit on
Turn VOLUME control to the leftmost position to
avoid damaging the speakers.

STANDBY/ ON

STANDBY/ON

or
STANDBY

1 Connect the AC power cord (mains
lead) to the wall outlet (the
mains).
L

OUT(REC) IN (PLAY)

L

L

R

R

CAUTION:
SPEAKER IMPEDANCE
4 OHMS MIN./SPEAKER

Power/muting
lamp

VOLUME

SPEAKERS

REMOTE
TAPE
CONTROL
OUT(REC) IN (PLAY)

TUNER LINE/DVD
OUT(REC) IN (PLAY)

R

L
AC OUTLET

R

AC 230-240V

CDR/PC

CD

MD

OUT

IN

PROCESSOR

SUBWOOFER
PRE OUT

50Hz
SWITCHED
100W MAX.

To wall
outlet
AC power cord (mains lead)
(illustration is 230-240 V models)

2 Press the POWER switch to supply
power to the unit.
The STANDBY indicator lights.
POWER

ON

OFF

3 Press

STANDBY/ON button or
POWER button on the remote controller to turn on the unit.
The STANDBY indicator goes off, and the
power/muting lamp above the VOLUME
control lights.

18

Notes

• The A-905TX is shipped with the main power
(POWER) switch in the
ON position. When
the power cord is plugged in for the first time,
the A-905TX will automatically enter the standby
state and the STANDBY indicator will light (same
condition after step 2.)
• If the AC power cord (mains lead) is connected
to the AC outlet of another component, that
component’s AC power cord (mains lead) must
be connected to the wall outlet (the mains) to
supply power to the unit. If the component has
a power switch, it must be set to On.
• Leave POWER switch on. If you set POWER
switch to off:
– the remote controller will not operate, and
– the timer functions will not operate.

• If you do not use the unit for a long time, set
POWER to off by pressing POWER switch again.
• The unit may cause a power surge on your home
circuit when you turn it on. If this interferes with
any other devices connected to the same circuit, plug this unit into another outlet on a separate circuit.

Choosing the required source
STANDBY/ ON
CLOCK

Input source indicators

SLEEP

GRAPHIC EQ
EFFECT
MODE

TUNER INPUT

PRESET
FM

AM

TAPE

INTEGRATED STEREO AMPLIFIER
VOLUME

WIDE RANGE AMP TECHNOLOGY

VOLUME

PAUSE / STEP

REPEAT

INPUT

DVD

MD

SCROLL

INPUT
PLAY MODE CLEAR

CD

STANDBY/ON

MD

TUNER

TAPE

LINE/ DVD

CDR/PC

REPEAT

INPUT

STANDBY

TREBLE

SOURCE DIRECT
DIRECT

BALANCE

PHONES

TONE

+

—

+

L

CD

CLEAR
DISC

CDR

TONE

CLEAR

TIMER

1

2

3

4

5

6

REC

ACOUSTIC
PRESENCE

MUTING

OFF / 1 / 2

R

A-905TX

UP/DOWN

7

8

--/- - -

10 / 0

9

VOLUME

ACOUSTIC
PRESENCE
ENTER

1 Turn INPUT selector clockwise or
Or press INPUT button on the remote controller.
INPUT

INPUT

or

2 Start playing the source you selected in step 1.

3 Set the volume to appropriate
level using the VOLUME control or
VOLUME (up)/ (down) buttons
on the remote controller.
Turn VOLUME control clockwise to increase
the volume or counterclockwise to decrease
the volume.

CD

CDR/PC

MD

TUNER

LINE/DVD

or

VOLUME

Preparations

VOLUME

The indicators light in the following order:

/

Connections

counterclockwise until the input
indicator of the source you wish
to listen to lights.

VOLUME

Before using

OFF

—

REC

RANDOM

REPEAT PLAY MODE

DIRECT

BASS
POWER

ON

MEMORY

TAPE

Operation

When you press the INPUT button on the
remote controller repeatedly, the indicators
light up in clockwise order.
e.g. The CD player is selected.
MD

TUNER

TAPE

LINE/ DVD

CDR/PC

Other Information

CD

19

Adjusting the sound
STANDBY/ ON
CLOCK

SLEEP

FM

VOLUME

GRAPHIC EQ
EFFECT
MODE

TUNER INPUT

PRESET

INTEGRATED STEREO AMPLIFIER

AM

WIDE RANGE AMP TECHNOLOGY

TAPE
INPUT
PAUSE / STEP

CD

STANDBY/ON

MD

TUNER

TAPE

LINE/ DVD

CDR/PC

REPEAT

PLAY MODE CLEAR

STANDBY

DIRECT

BASS
POWER

ON

OFF

TREBLE

SOURCE DIRECT
DIRECT

BALANCE

PHONES

TONE

—

+

—

+

L

ACOUSTIC
PRESENCE

OFF / 1 / 2

R

A-905TX

ACOUSTIC
PRESENCE
Indicator

REPEAT

MEMORY

CLEAR
DISC

CDR

TONE

CLEAR

TIMER

1

2

3

4

5

6

7

8

9

REC

MUTING

VOLUME

ACOUSTIC
PRESENCE
ENTER

--/- - -

10 / 0

REMOTE CONTROLLER

ance.
Turn BALANCE control to “L” to
lower the volume level of the
right speaker, or “R” to lower the
volume level of the left speaker.

RC-456S

ACOUSTIC
PRESENCE

ACOUSTIC PRESENCE
Acoustic Presence adds realness to music through
the use of exclusive Onkyo circuitry. Presence settings 1 and 2 are ideally suited for use with compact speakers.

Press ACOUSTIC PRESENCE on the unit
or remote controller.

BALANCE

The indicator

R

2 Adjust the tone.

ACOUSTIC
PRESENCE

The tone can be adjusted from –10
to +10.
Turn BASS control to “+” to reinforce the level of the low frequencies, or “–” to attenuate it.

Adjust high frequencies.
Turn TREBLE control to “+” to reinforce the level of the high frequencies, or “–” to attenuate it.

TREBLE

–

ACOUSTIC
PRESENCE

Each press changes the mode as follows:

OFF

Acoustic Presence is off and
the indicator is off.

1

The indicator lights up orange
and the low end and bass
range will be enhanced.

2

The indicator lights up green
and the bass range will be
further enhanced.

There is no high frequency control at the
center position.
BASS

or

OFF / 1 / 2

There is no low frequency control at the center position.

+

CD

RANDOM

UP/DOWN

1 Adjust left and right speaker bal-

–

REC

REPEAT PLAY MODE

BASS BALANCE
TREBLE

L

DVD

MD

SCROLL

+

Tip
• Refer to the specifications on page 24 for more
information on the boost amount.
• The effect might not be obvious if the source’s
bass range or low end is weak.

20

Source Direct function/Muting/Listening
with the headphones
STANDBY/ ON
CLOCK

SLEEP

FM

VOLUME

WIDE RANGE AMP TECHNOLOGY

INPUT

CD

STANDBY/ON

MD

TUNER

TAPE

LINE/ DVD

CDR/PC

BASS

ON

VOLUME

DIRECT

TREBLE

BALANCE

SOURCE DIRECT
DIRECT

PHONES

OFF

TONE

—

+

—

+

L

TAPE

REPEAT

REPEAT

DVD

MEMORY

MD

SCROLL

REC

CD

RANDOM

CLEAR

ACOUSTIC
PRESENCE

DISC

CDR

REPEAT PLAY MODE

OFF / 1 / 2

R

AM

PAUSE / STEP

PLAY MODE CLEAR

STANDBY

POWER

Power/muting
lamp

GRAPHIC EQ
EFFECT
MODE

TUNER INPUT

PRESET

INTEGRATED STEREO AMPLIFIER

TONE

CLEAR

TIMER

1

2

3

4

5

6

7

8

REC

A-905TX

PHONES

SOURCE DIRECT

SOURCE DIRECT selector

DIRECT: A signal selected via the Input Selector
will bypass the BASS and TREBLE controls.
TONE: You can adjust the tonal quality of the
signal selected by the Input Selector using the BASS and TREBLE controls.

VOLUME

ENTER

--/- - -

10 / 0

Muting the sound
Press MUTING button on the remote
controller to mute the sound.
The power/muting lamp above the VOLUME control flashes.
To restore the sound, press MUTING button again.
VOLUME

MUTING

SOURCE DIRECT
DIRECT
TONE

SOURCE DIRECT indicator
(This indicator lights up
when the knob is set to
“DIRECT.”)

During muting:
• if you press VOLUME or button on the remote controller, the sound will be restored, and
• if you turn off the unit, and turn it on again, the
sound will be restored.

Preparations

Tip
DIRECT

Connections

By bypassing the audio circuits of certain controls,
the Source Direct function allows you to enjoy a
sound closer to the original.

9
ACOUSTIC
PRESENCE

Before using

MUTING

MUTING

UP/DOWN

Listening with the headphones
If you set the SOURCE DIRECT knob to “DIRECT”,
you cannot use the tone control function. However, Acoustic Presence mode is enabled. (You can
turn it off if you want.)

Connect the stereo headphones mini
plug to the PHONES jack.
The speakers will reproduce no sound while the
headphones are connected.

Operation

Note

INTEGRATED STEREO

STANDBY

BASS
POWER

ON

PHONES

OFF
–

+

Tip

You can adjust the sound through the headphones
as well as through the speakers. See “Adjusting
the sound” on the previous page for operations.

Other Information

CD

STANDBY/ON

21

Recording
STANDBY/ ON
CLOCK

Input source indicators

SLEEP

GRAPHIC EQ
EFFECT
MODE

TUNER INPUT

PRESET
FM

AM

TAPE

PAUSE / STEP

INPUT

DVD

INTEGRATED STEREO AMPLIFIER
VOLUME

WIDE RANGE AMP TECHNOLOGY

REPEAT

MD

SCROLL

INPUT
PLAY MODE CLEAR

CD

STANDBY/ON

MD

REPEAT

TUNER

TAPE

LINE/ DVD

CDR/PC

INPUT

STANDBY

ON

TREBLE

SOURCE DIRECT
DIRECT

BALANCE

PHONES

–

+

–

+

CD

CLEAR
DISC

CDR

TONE

CLEAR

TIMER

1

2

3

4

5

6

REC

ACOUSTIC
PRESENCE

TONE

OFF
L

REC

RANDOM

REPEAT PLAY MODE

DIRECT

BASS
POWER

MEMORY

MUTING

OFF / 1 / 2

R

A-905TX

UP/DOWN

7

8

--/- - -

10 / 0

9

VOLUME

ACOUSTIC
PRESENCE
ENTER

Before recording
Refer to the instruction manuals of the related
components for detailed recording operations.

1 Turn INPUT selector clockwise or
counterclockwise until the input
indicator of the source you wish
to record from lights.

2 Prepare the playing source.
e.g. Insert the CD you want to record from
into the CD player.

ONKYO
CD PLAYER

CD PLAYER

Or press INPUT button on the remote controller.
INPUT

INPUT

3 Prepare the recording component.
e.g. 1 Insert an MD into the MD recorder.

or

The indicators light in the following order:
CD

MD

TUNER

e.g. 2 Insert a cassette into the stereo cassette tape deck.
CDR/PC

LINE/DVD

TAPE

When you press the INPUT button on the
remote controller repeatedly, the indicators
light up in clockwise order.
e.g. The CD player is selected.
CD

MD

TUNER

TAPE

LINE/ DVD

CDR/PC

e.g. 3 Insert a blank CD into the CD recorder.

4 Start recording with the component prepared in step 3, then start
playing the source prepared in
step 2.

22

Other Information

Troubleshooting
If you have any problems with the unit, please check the troubleshooting table below first. For any
problems not covered in the table, please consult your nearest ONKYO authorized service center.
Cause

Remedy

The unit doesn’t turn on.

The AC power cord is not fully inserted into the wall outlet.

Insert the AC power cord (mains lead)
plug into the wall outlet (the mains)
securely.

Sound is reproduced from
neither left or right speaker.

• The wire of the speaker cord is
touching the other jacks, connectors, or metal parts.
• The volume level is turned down
to the minimum.
• The sound is muted with the muting function.

• Check the speaker connections (see
page 15).

• Jumper plugs are not connected to
the PROCESSOR connectors.

No sound is reproduced
when the (wake-up) timer
operates.

• The volume level is turned down
to the minimum.

• Adjust the volume to the proper
level when you set the timer (see
page 19).

The remote control doesn’t
operate.

• The batteries in the remote controller are dead.
• The remote controller is out of the
control range.

• Replace the batteries with new ones
(see page 17).
• Operate the remote controller
within the control range (see page
17).
• Try to operate the remote controller from a different angle, or remove
the obstruction.

• There is some obstruction between
the remote controller and the unit.

• Adjust the sound balance (see page
20).
• Connect the jumper plug to PROCESSOR connectors.

Other Information

Excessive electrical interference may temporarily render this system's sensitive microcomputer inoperable. If this happens, unplug the system for at least five seconds.

Operation

• Check the speaker connections (see
page 15).

Preparations

• The speaker cord is not connected
properly or firmly, or is disconnected.
• The sound is unbalanced between
the left and right speakers.
• Jumper plug is not connected to
the PROCESSOR connectors.

Sound is reproduced from
only one speaker.

Connections

• The headphones are connected to
the PHONES jack.

• Adjust the volume level (see page
19).
• Press MUTING button on the remote controller to restore the sound
(see page 21).
• Turn down the volume level first,
then disconnect the headphones.
Then, readjust the volume level.
• Connect the jumper plugs to PROCESSOR connectors.

Before using

Symptom

23

Specifications
Power output
22 watts per channel, min RMS,
at 4 ohms, both channels driven
1 kHz, with no more than 0.5% THD
15 watts per channel, min RMS,
at 8 ohms, both channels driven
1 kHz, with no more than 0.2% THD
2 × 20 watts at 4 ohms,1 kHz (DIN)
2 × 14 watts at 8 ohms,1 kHz (DIN)
2 × 32 watts at 4 ohms,1 kHz (EIAJ)

Power supply
AC 120 V, 60 Hz
AC 230-240 V, 50 Hz

Total harmonic distortion
0.2% at rated power

Weight
3.4 kg, 7.5 lbs

IM distortion
0.2% at rated power
Damping factor

30 at 8 ohms
Frequency and response
15 to 30,000 Hz ± 1 dB
Input sensitivity/impedance
TUNER/LINE/DVD/CD: 200 mV/50 kohms
TAPE PLAY: 200 mV/50 kohms
MD PLAY: 200 mV/50 kohms
CDR/PC PLAY: 200 mV/2.2 kohms
Output sensitivity/impedance
TAPE REC: 200 mV/2.2 kohms
MD REC: 200 mV/2.2 kohms
CDR/PC REC: 200 mV/2.2 kohms
Bass control
± 8 dB at 50 Hz
Treble control
± 8 dB at 10,000 Hz
Acoustic Presence
1: +3 dB at 20.5 Hz, +3 dB at 82 Hz
2: +3 dB at 20.5 Hz, +6 dB at 82 Hz
Signal to noise ratio (IHF-A)
LINE/DVD/CD/MD/CDR/PC: 100 dB
Muting
–50 dB

24

Power consumption
(AC 120 V, 60 Hz)
(AC 230-240 V, 50 Hz)

: 63 W
: 58 W

Dimensions (W × H × D)
205 × 91 × 302 mm
8-1/16" × 3-9/16" × 11-7/8"

Specifications and external appearance are subject to
change without notice as a result of product improvement.

Index to parts and controls
For operational instructions, refer to the page indicated in square parentheses.

Front panel

STANDBY indicator [18]

Remote control sensor [17]
Input source indicators [19, 22]
Power/muting lamp [18, 21]

INTEGRATED STEREO AMPLIFIER
VOLUME

WIDE RANGE AMP TECHNOLOGY

INPUT

CD

STANDBY/ON

MD

TUNER

TAPE

LINE/ DVD

CDR/PC

STANDBY

DIRECT

ON

TREBLE

SOURCE DIRECT
DIRECT

BALANCE

PHONES

TONE

OFF
—

+

—

+

L

ACOUSTIC
PRESENCE

OFF / 1 / 2

R

A-905TX

SOURCE DIRECT
indicator [21]

VOLUME control [19]
BALANCE control [20]

Operation

SOURCE DIRECT selector [21]

Preparations

BASS
POWER

Connections

INPUT selector [19, 22]

Before using

STANDBY/ON button [18]

TREBLE control [20]
BASS control [20]

POWER ON/OFF switch [18]

ACOUSTIC PRESENCE
button/indicator [20]

Other Information

PHONES jack [21]

25

Index to parts and controls
Remote controller
• You can control the other
-connected components with the supplied remote controller.
• The remote controller buttons operate in the same way as the buttons on each component with the
same indication.
• For actual operations, please refer to the Instruction Manual for each component.

STANDBY/ ON

STANDBY/ON button
[18]
Toggles between STANDBY
and ON.

CLOCK

SLEEP

GRAPHIC EQ
EFFECT
MODE

TUNER INPUT

PRESET
FM

AM

TAPE

PAUSE / STEP

REPEAT

REPEAT

MEMORY

MD

SCROLL

PLAY MODE CLEAR

DVD

INPUT button [19, 22]
Enables you to select a listening source.

REC

CD

RANDOM

CLEAR
DISC

CDR

REPEAT PLAY MODE

MUTING button [21]
Mutes the sound temporarily.

TONE

CLEAR

TIMER

1

2

3

4

5

6

7

8

REC

Disabled with this unit.
MUTING

UP/DOWN

9

VOLUME

ACOUSTIC
PRESENCE
ENTER

--/- - -

10 / 0

REMOTE CONTROLLER

VOLUME / buttons [19]
Enables you to increase or
decrease the volume level.

RC-456S

ACOUSTIC PRESENCE button [20]
Switches acoustic presence
off and types.

26

Remote controller
• Use the following buttons to control components that are connected to the
- system.
• Buttons marked with an asterisk (*) cannot be used when the unit is combined with the Separate
Collection Series.
Graphic equalizer control*

CLOCK : Clock call button
SLEEP : Sleep timer button
PRESET
/
: Tuner preset select buttons
FM: FM band select button
AM: AM band select button

EFFECT: Effect select button
MODE: Mode select button

MD recorder control

: Fast-forward button
: Rewind button
: Reverse play button
: Stop button
: Play button

STANDBY/ ON
CLOCK

SLEEP

GRAPHIC EQ
EFFECT
MODE

TUNER INPUT

PRESET
FM

AM

TAPE

PAUSE / STEP

DVD

REPEAT

PLAY MODE CLEAR

REPEAT

MEMORY

MD

SCROLL

REC

CD

RANDOM

CLEAR
DISC

CDR

REPEAT PLAY MODE

CD recorder control
TONE

CLEAR

TIMER

1

2

3

4

5

6

7

8

REC

MUTING

UP/DOWN

9

ENTER

--/- - -

10 / 0

RC-456S

Tuner/CD player (or
changer) /MD recorder control
1~9, 10/0: Number buttons
—/—: Ten’s hold button

Other Information

TIMER: Timer select button
UP / DOWN : Setting select
buttons
ENTER: Enter button

VOLUME

ACOUSTIC
PRESENCE

REMOTE CONTROLLER

Timer setting control
(Tuner)*

REPEAT: Repeat mode button
RANDOM: Random play button
: Stop button
: Pause button
: Play button
MEMORY: Memory button
CLEAR: Clear button
DISC: Disc button for CD changer
: Track down button
: Track up button

Operation

REPEAT: Repeat mode button
PLAY MODE: Play mode selection
button
: Stop button
: Pause button
: Play button
CLEAR: Clear button
REC: Recording button
: Track down button
: Track up button

CD player (or changer) control

Preparations

DVD player control
: Chapter/track down button
: Chapter/track up button
: Stop button
PAUSE/STEP : Pause/Step forward
button
: Play button

Connections

Stereo cassette tape deck
control

REPEAT: Repeat mode button
SCROLL: Scroll button
: Stop button
: Pause button
: Play button
PLAY MODE: Play mode selection
button
CLEAR: Clear button
REC: Recording button
: Track down button
: Track up button

Before using

Tuner control*

27

Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: 072-831-8111 Fax: 072-833-5222 http://www.onkyo-intl.com
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.onkyousa.com
ONKYO EUROPE ELECTRONICS GmbH
Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY
Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.onkyo.net
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

SN 29343066

HOMEPAGE
http://www.onkyo.co.jp/

Printed in Japan
I0103-1

E



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