Velodyne Acoustics 810 Users Manual

1012XII to the manual 8ec3bd4c-c6de-4d67-baa4-512a807be161

: Velodyne-Acoustics Velodyne-Acoustics-810-Users-Manual-452698 velodyne-acoustics-810-users-manual-452698 velodyne-acoustics pdf

Open the PDF directly: View PDF .
Page Count: 6

"If you k

now

subwoofers, you

know

about

Veladyne."

"... it's safe to say that when it comes to woofin , done right,

Velodyne's bigger models are probably the safest bet there is."

"... we

just

sat there marvelling at the

sheer

power

and

majesty of

this jun ior varsity Velodyne."

~

8

10/1

0

12XII

-Corey Greenberg Owner's Ma

nu

al

Home Theater Technology

/F

ebruary 1995

Face Off: Comparison of five subwoofers

Model Tested: VA-1012X

Velod ne

Velodyne

Aco

ustics, Inc.

1070 Commercial St. Suite #101

San Jose

,'

CA 951 12

408.436.7270 voice

408.436.7276 fax

Web Site: http//www.velodyne.com

E-mail: velodyne@earthlink.net Audio

lV

ideo SubwQofer

System

@ Printed on recycledpaper.

•• • • •

A IIiiiiIIA

Caution

To reduce the risk ofelectric shock,00 not r

emov

e cover (or

back

). Nouse r-serviceable parts inside. Refer

se rvicing toqualified service

personnel

.

Th e lighting flash with arrowhead symbol is intended to alert the user to the presence of uninsulated

"dangerous voltage"'Nithin the product's enclosure that

may

be of sufficient magnibJde tocons1itule a risk

01

electric shock to pe

rsons.

The

ex

clama

tion point symbol is intended to alert the

user

to the pre

serc

e of important operatin g and

maintenance(servicing) instructions in the literature

accomp

anying the subwoo fer.

1. ReadInstructions --Allsafetyand ooera

trq

instructionsshould be read before the subwcofer is operated.

2. Retain Instructions-- The safetyand operating inst

ructons

shouldbe retainedforfuturereference.

3. Heed Wamings .- Allwamingson mesubwooter aro inthe operatinginstructions should be adhered to.

4. Follow Instructions --Alloperatingard use instructions should be followed.

5. Wafer and Moisture - The

subwoote

rshouldnotbe usednearwater - for example, near a bathtub,washbowl,

kitchensink,laundrytub,in a wetbasement, neara swimming pool or the like.

6. carts and Stands--The subwoclershouldbe usedonly withacartor stand recommerded by themanufacturer.

7. Wallor Ceiling Mounting-- The subv.oofershould be mounted to a wallor ceilingonlyas recommended by the

mamJlacturer.

8. Ventilation - The subv.ootershould be situatedso mat

~

s

locationor pos

to

n does not interfere

'-\1th

~

proper

verrtilation.Forexarrote, thesobwoolershouldrotbesituatedona

bed

,sofa,rug,orsimilarsurfacethatmayblock

theventilationqJenings;or placedina

built-in

iflStallationsuch asa bookcaseorcabinetthatmay impedetheflow

of air

lt1rou

gh the

ventilation

ooenros.

9. Heat- Thesubv.oofershould bes;tuatedawayfromheatsourcessuchasradiators,beatregisters,stoves,orother

subwoofers that produce heat.

10 PowerSources--Thesubv.oofershouldbeconnectedtoapowersupplyonlyofthetypedescribed intheoperating

inst

ructioflS

or as marked on the subwooler.

11.

Power

~ord

P

rotectioo

- Power-supplycordsshouldberoutedsothattheyarero tlikelytobewalkedonorpinched

by

~enns

placeduponoragainstmern,

paYing

particularatterrtiontocordsatplugs,convenience

receptacles,

and

thepoint at whichthey exitfrom the subwoofer.

12. "caution:To preventelectrical shod< , matchw'de bladeof plug to w'de slot, fUllyinserted." "A

tterrt

ion: Poureviter

leschocs

e1

ectriques,introduire lame Ia plus large dela fiche dans Ia bornecorrespondante de la prise el pousser

jusqu' au fond:

13. Clearing --'The subv.oofer should be cleaned only as recommerd ed by

lt1

e manufacturer.

14.

Non..ise

Periods--The powercord ofthe

suowoot

er shouldbe unplugged fromthe outletwtlen leftunusedfor a

IorYJ

pe

roo

of time.

15. Olject and

lXlud

Er1Iry

- care shouldbe takenso thatotiects do rot falland liquidsare rot spilledonto the

enclosure.

16. Damage ReqJiringService--Thesebwooter should be servicedby qualified servicepersonnel when:

a. The power-supply cord or plug has been damaged.

b. OJjects havefallen or

lQJ

idhas

been

spilled into thesubwoofer.

c. The subwoolerhas been exposed to rain.

d. The su

b'M:xJf

er

does

rot aroea r to operate m rmally or

exl1iJit

s a marked charge in performance.

e. The subv.oolerhas beendrcpped or damaged.

17. 5ervdrg - The

use

rsrouklnot

atterrpt

toservicethe

Slbwooler

beycrowhat is

descrt>ed

in the

opern

ting

InstIUCllons.

All other servicing shook! be referred to quafifiedservice

personnel

.

SPECIFICA

nO

NS VA-810XII

VA·1012X1I

Cabi net (incl.

leg

s) 15.5' x 14.8' x1

4.8'

(H

,W

,D) 17.5' x1 6.5 ' x16

.5'

Freq

uency

Respon

se

35hz-2

00hz +/- 3 dB

35hz-200hz

+/- 3 dB

High Pass C

rossove

r 80hz or 100hz (6

dB/oct

ave) ..

L

ow

Pass Cros

sover

40hz - 120 hz (6 dB/

octave

, 24

dB

ulti

mate)

....

Amplifier

Cla ss AlB ,

100

watts,

250

watts

peak

..

W

oofer

8" f

orwar

d firing 10' forw ard firing

Ma

gnet

55 oz. 55

0l

Voice Coil 2" 2"

Pa

ssive

Radiator 10' do

wnw

ard firing 12" down ward firin g

Inpu ts Line-level &

speaker

-level.

Ou tputs Line-le vel &

speak

er-level .....

W arr

anty

One year (parts & l

abor)

..

Weight

44 Ibs. (approx.) 58 Ibs. (approx.)

Specifications are subject to change without notice .

FOR YOUR RECORDS. . .

DATE PURCHASED _

OEALER _

SERIAL# _

'NOTE: Please completeand returnyour warranty card withinten (10) days.

several minutes when there is no longer any signal at the inputs.

If you plan to leave the \{A -8 10/1012XII unused for an extended

period of time ,we recommend that you turn off the unit by the master

power switch on the rear panel.

Trou

bl

eshooting & Service

Before seeking service for

your

VA-810/1012XII subwoofer, please

re-check all systems. Following is a simple troubleshooting guide to

assist you.

1. Verify unit is plugged in and power outlet used is active.

2. Is

power

switch on?

3. Is auto turn on/off set properly?

4. Is unit receiving an input signal from your source?

5. Have all controls on subwoofer (volume, crossover, phase,

etc.) been properly set?

6. If unit has been running at high levels, one of the protection

circuits may be engaged.

Has

the built-in amplifier overheated?

Has

the speaker's voice coil started to heat up?

If the protection circuitry is active, the unit may cycle on and off until

operating parameters return to normal. Under more serious condi-

tions , the unit may shut off comp)etely. Normal operation will return

upon cooling, but you may be required to turn the power off and then

on again to reset the unit.

The follo wing conditions require service by a qualified technician:

1. The power cord has become damaged.

2. The unit does not appear to operate normally or exhibits a

marked change in performance.

3. The unit has been exposed to water.

4. Some part of the cabinet or circuitry is physically damaged.

Thank

you

for

purchasing a Velodyne!

Congratulations!

Congratulations on your purchase of a Velodyne VA-810/1012XII

subwoofer system. This system represents the state of the art in

accurate low frequency reproduction. Read and follow the instruc-

tions below to insure safe and proper system operation.

Warning!

To

prevent

fire or shock hazard, do

not

expose this equipment to

rain or moisture. To

avoid

electrical shock, do not open

speaker

enclosure or

amp

chassis cover. Please observe all warnings on the

equipment

itself. There are no user serviceable

pans

inside . Please

refer

all

service questions to

your

authorized Velodyne dealer.

Prior to installation

Please unpack the system carefully. Remove all staples used to

seal the carton as they can scratch the cabinet. Please save the

carton and all packaging materials for future use. Record the serial

number

in the space provided on the warranty card for future

reference.

Product Features & Controls

• Built-in 100 watt (RMS) power amplifier

• Adjustable (40 to 120hz) low-pass crossover with bypass option

• Selectable (80 or 100hz) high-pass crossover

• Line-level inputs & outputs

• Speaker-level inputs & outputs with 5 way binding post connec-

tions

• Signal sensing auto turn on/off with bypass option

• Variable volume control

• selectable phase control (0 or 180 degrees)

• Detachable power cord (available on some versions)

• Magnetically shielded for video use

• Dual staggered low-pass crossover; 12dB/octave initial, 24dB/

octave ultimate

• Gain compression circuit to protect woofer from over excursion

• Input overload protection

Installation

Your new VA-810/1012XII subwoofersystem provides for a number

of installation options. Read all the installation information below in

order to determine which installation option is best for your system.

Remember to perform all installation procedures with system

powe r turned off.

Inputs

Your new VA-810/1012XIIsubwoofer is equipped with both speaker-

level and line-level inputs. Use the LINE-IN jacks when connecting

your subwoofer to a pre-amp, signal processor, or line-level cross-

over.

The

FROM AMPLIFIER jacks connect directly to the speaker

outputs of a integrated amplifier or receiver. Your amplifier section

will notice no additional loading effects when you use these inputs

because of their high impedance.

Note

00

not use both LINE-IN

and

FROM

AMPLIFIER

inputs simulta-

neously.

Volume control

This control allows you to balance the output from the sub woofer to

the main speakers in your system. This contr.olshould be set to

achieve similar volume level from both the main speakers and

subwoofer.

Low-pass crossover

Both sets of inputs sum the left and right channels together and the

resulting signal is passed through an adjustable low-pass crossover

before being amplified. The crossover control allows you to adjust

the upper limit of the subwoofer's frequency response from 40 to

120 hz. The subwoofer's response will beg in rolling off above the

frequency you set this control to.

You should set the crossover frequency to obtain a smooth and

seamless transition from the subwoofer to the main speakers in

your system. Ifyour main speakers are sma ller units with limited low

frequency output.

~

/I)

U

may wish to choose a highe r frequency (such

same channel.

Keep in mind that freq uency response and output level carl be

drastically influenced by placement depending on the acoustic

properties of the listening room . Ty pically the VA-810/1012XII will

sound louder when placed next to a wall or in a corner.

Caution!

The VA series sub woofers have amplifiers built into the cabinet. 0 0

not

place the cabinet next to sources of heat such as furnace

registers, radiators, etc. The

power

cord should be routed in 'Such

a way that it will not be walked on, pinched, or compressed in any

way.

Regardless of where you install your VA-81 0/1012XII subwoofer, it

must remain in an upright position (passive radiator facing down-

ward) . Using, shipping, or otherwise storing the VA-810/101 2XII

subwoofer in any other position for an extended period of time may

result in damage to the unit not covered by warranty.

The

VA-810/1012XII Subwoofer is magnetically shielded to reduce

magnetic emission from its cabinet to increase the number of

possible locations available for placement. However, this shielding

may not be adequate for all installations.Certaintypes of televisions

are particularly sensitive to stray magnetic fields . If your television

produces distorted colors after installation of your VA-810/1012XII

subwoofer, simply increase the distance between your television

and the VA-810/1012XII until normal color and operation is re-

turned.

Care

of

oot

er

Do not use any harsh detergents or chemicals to clean the cabinet.

Abrasives, detergents, or clean ing solutions may damage the finish

on the cabinet. We recommend using a damp cloth to clean the

cabinet.

During normal conditions, the VA-81 0/1012X II subwoofer may be

left on continuously without any problems. The unit is equipped with

a signal sensing turn on/off that will automatically turn on the unit

when a signal is prese nt at the inputs and turn off the unit after

- -- ---

@@

~,

'.

~

- - -

MA IN

OUTPUT

S

(s p ea ke r

-leve

l )

INTEGRATED

AMP I

RECE

IVER

@

,!n

Figu re 2: Installation using speaker-level (from amplifier) inputs

V

~

od

yn

e

....

~

:::J.

[lID]

~

~

I:':.

':.

-::.r:="

,6E\ . -

11Th.

-___ I

'

,'QW

:-t

-.'0JI--T T

.

..

E

:::H

....

~~:

;;

~

o

l

.

ACl.

~

,,--

w

'

- -

'

-

.

-

l

~

O

@

~

r-""'

~

"'

_

.

---'

iHiHi)

Ii)

(iHi)

Ii)

li

SATE

LLITE

SPEAKERS

Interconnect cables

Whe n installing your VA-810/1012XII using the line-level input s/

outputs, you sho uld use standard shielded phono cables. Always

keep the lines as short as practical to minimize noise.

When using the speaker-level input s/outputs, use the same quali ty

spea ker cable to your subwoofer as you run to your satellites.

'/ac

em

ent

The VA-81 0/1012XII operates at very low frequ encies which are

primarily non-direction al. While it is recommended that the sub-

woofer be placed on the same plane as the satellitespeakers, room

and system conditions often dictate otherwi se. See your dealer for

help in placement.

' When using a pair of VA-810/1012XII subwoofers in stereo, it is

preferable to place each subwoofer adjacent to the satellite of the

as 100-120hz) than you would with larger speakers which have

greater low frequency outpu t. With larger speakers, you mighi start

with this control set lower, such as 80hz.

A bypass switch is also provided if you wish to use an external

crossover. If you are not using an external crossover, we recom-

mend that you use the one provided within the unit for optimum

performanc e.

Phase adju st

ment

This control allows you the ability to compensate for having the

subw oofer in a different locat ion than the main spea kers. Ideally,

you will have the sound from the subwoofer reach the listening

position the same time as the sound from the main speakers,

However, if the distance from the listen ing position to the subwoofer

and the distance from listen ing position to the main speakers differs ,

the sound from each will reach your ears at a different time.

This control allows the signal to be delayed 180 degrees so the

output of the subwoofer will blend in to that of your main speakers

without any cancellation.

Auto

turn

on

switch

The auto turn on switch allows the user to bypass the auto turn on

functi on ifdesired. When set in the "auto" mode with main power on,

the VA-1008/121Owillturn itself on when an input signal is present.

If no signal is present, after several minutes the unit will shut itself

off. When set in the "on " mode, the auto turn on/off function is

bypassed and the unit will be on whenever the main power switch

is on.

High

pass

cro

s

sover

switch

This switch selects the frequency for the high pass crossover. This

crossover is functional on both line and speaker-level outputs.

Smaller speakers with limited low frequency output may prefer the

higher 100hz se

lli

ng which will reduce the low frequencies sent to

them. Larger speakers with greater low frequ ency ou tput may be

able to handle the 80hz setting without strain.

Power

switch

The master power switch is located on the right half of the unit. This

rocker style switch is the main onloff for the unit. This switch should

con tin ued.

..

be set to position 1 for on (up), 0 for off (down).

Det

ac

hable

powe

r

cord

(available on some versions)

Allows for easy replacement should the original be damaged.

Line-lev

el

connection

Figure 1 shows connection to a pre-amplifier's main outputs and

returning them to your amplifier inputs.

When installed in this fashion, your satellite speakers will be

crossed over at 80/1

OO

hz,which removes the lower bass from your

amplifier and speakers thus. enabling them to do a better job

reproducing high frequencies. By utiliZing this method ,you will have

a bi-amplified system, gaining improved power and headroom for

your system.

Figure 1: Installation using line-l evel (line in) inputs

~

...

.'o:l,

ut

:l • Vel

odyn

e

~

~

E

~

-:z=.

i •

••

1

.:

~

:

'

j

~

~

.

~

:

I

~

L

IH I O H

PA

••

1

00

~

J

.01

IJJ

.

.-

........

cilllJ

,.-ou

t

--t

u

,-

..

~

@@

@@

r----:OU

T-_

'_

.~

@@

@ @

AMP

LIFI ER

PRE· AMP

MAIN OUTPUTS

RIGHT

LEFT MA IN IN PUTS

RIGHT LEFT

MAIN OUTPUTS

RIGHT LEFT

TO SATELLITE S

PEAK

ERS

A

word

about

subwoofer

outputs

The Velody ne subwoofer is designed to operate using the full range

audio signal for input when using the built-in crossover. Some

surround sound processors/receivers, including the Dolby

AC3

system with their .1 channeloutput,have a "subwooferout"jackthat

is already crossed overand designed to be used with a conventional

amplifier and speaker. Combining both an external crossover and the

one internal to the subwoofer may result in low output and increased

noise. In these cases, to optimize your subwoofer performance you

should bypass the internal crossover in your Velodyne subwoofer .

To bypass the crossover within the subwoofer, simply locate the

switch marked "out / in" on the back panel of the subwoofer and set

to the "out" position. This will eliminate the internal crossover func-

tion.

Note

If not using an external crossover, you should use the built-in

crossover for optimal performance.

Subwoofer out from

AN

Processor

From the low pass output of your signal processor Install into right or

left RCA line in connector in the back of the subwoofer or use a "Y"

connector adapter into both right and left RCA line in connectors in

the back of the subwoofer.

Speaker-level connection

Figure 2 shows an easy way to connect your VA·810/1012XII

subwoofer directly to your receiver or integrated amplifier.

When connected in this fashion, your satellite speakers will be

crossed over at 80/1OOhz, which removes the lower bass from your

speakers thus, enabling them to do a better job reproducing high

freque ncies.

You may also connect your satellites directly to your receiver or

amplifier along with the subwoofer if you wish to bypass the internal

high-pass crosso ver.

Caution

!

To avoid damage to y

our

main amp lifier, be sure to maintain correct

pola rity when m

aki

ng all connections. Red (positive) to red,

and

black

(negative) to black. Be sure that all connections are tight,

and

that

there are no loose strands or frayed wires. cootmuec .