Sony Ta-av621 User manual

Ss

ONY

3-754-914-21(1)

416

Integrated

Siereo

AVAmplifier

TA-AV621

1992

by

Sony

Comoration

pete

ZINN

Co

OWNER’S

RECORD

The

model

and

serial

numbers

are

located

at

the

rear.

Record

these

numbers

in

the

space

provided

below.

Refer

to

these

numbers

whenever

you

call

upon

your

Sony

dealer

regarding

this

product.

Model

No.TA-AV621

WARNING

To

prevent

fire

or

shock

hazard,

do

not

expose

the

unit

to

rain

or

moisture.

4\

ae

JN

CAUTION: TO

REDUCE

THE

RISK

OF

ELECTRIC

SHOCK,

Serial

No.

CAUTION

RISK

pa

prea

SHOCK

DO

NOT

REMOVE

COVER

(OR

BACK).

NO

USER-SERVICEABLE

PARTS

INSIDE.

REFER

SERVICING

TO

QUALIFIED

SERVICE

PERSONNEL.

This

symbol

is

intended

to

alert

the

user

to

the

presence

of

uninsulated

“dangerous

voltage”

within

the

prod-

uct's

enclosure

that

may

be

of

suffi-

cient

magnitude

to

constitute

a

risk

of

electric

shock

to

persons.

This

symbol

is

intended

to

alert

the

user

to

the

presence

of

important

operating

and

maintenance

(servicing)

instructions

in

the

literature

accompa-

nying

the

appliance.

*

The

graphical

symbols

are

on

the

rear

enclosure.

NO

Taliclaeetctileya)

This

equipment

generates

and

uses

radio

frequency

energy

and

if

not

installed

and

used

properly,

that

is,

in

strict

accordance

with

the

manufacturer's

instructions,

may

cause

interference

to

radio

and

television

reception.

It

has

been

type

tested

and

found

to

comply

with

the

limits

for

a

Class

B

computing

device

in

accordance

with

the

specifications

in

Subpart

J

of

Part

15

of

FCC

Rules,

which

are

designed

to

provide

reasonable

protection

against

such

interference

in

a

residential

installation.

However,

there

is

no

guarantee

that

interference

will

not

occur

in

a

particular

installation.

If

this

equipment

does

cause

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

the

receiving

antenna

Relocate

the

equipment

with

respect

to

the

receiver

Move

the

equipment

away

from

the

receiver

Plug

the

equipment

into

a

different

outlet

so

that

equipment

and

receiver

are

on

different

branch

circuits.

if

necessary,

the

user

should

consult

the

dealer

or

an

experienced

radio/television

technician

for

additional

suggestions.

The

user

may

find

the

following

booklet

prepared

by

the

Federal

Communications

Commission

helpful:

“How

to

Identify

and

Resolve

Radio-TV

Interference

Problems".

This

booklet

is

available

from

the

U.S.

Government

Printing

Office,

Washington,

D.C.

20402,

Stock

No.

004-000-

00345-4,

Bat

ee

a

Table

of

Contents

introduction

PROCAUNONS

5.

c2iscivsvasssssvestscovadosseedescestosvesivadedodcossoussuceaduseunsess

3

Getting

Started

UNPACKING

cisccissssssroscssconcctsevastesssstostesteseoedsonesstnonsessvncvassenooeas

Choosing

a

good

location

....

Remote

commander

..........s000

Hooking

Up

the

SYStCM

............ccssscrsercssenscesescrscserserscesenees

Connecting

audio

CQuIPMENE

...........cccscerscrscesesere

eatieets

6

Connecting

SP@aKers

........ccccsescccsseseressserscscsssssnesseseoees

7

Using

Your

Stereo

Getting

ready

to

enjoy

Surround

SOUNG

..............essecsccssrserees

8

Positioning

the

SPEAKETS

.......:scscesescsscessrsesesssessseescsenssnses

8

Placement

of

speakers

and

selecting

the

PRO

LOGIG

MODE

a

eisssscssicscssssasscscssnoesstesbecasssssccbestcdscastestacass

8

Adjusting

the

speaker

VoIUIMe

............cssccssecercsesssesessesenees

9

Adjusting

the

delay

time

of

the

rear

speakers

................

10

Adjusting

the

audio

Controls

............scsssssscssssssserssescserees

10

ACJUStING

VOIUME

.........ccccercsercssccrsecsressrscsesees

Senddaesvesessese

10

Adjusting

the

left

and

right

sound

balance

...............s000

10

Adjusting

the

tone

from

the

front

speaker

............seesees

10

Reinforcing

the

Dass

SOUNG

............csscrcseessesesssscrsessenes

10

Selecting

the

speaker

system.............

Suacesducvoszccecensaacensoes

10

Listening

to

&

Program

SOUICE

.........cccersessssessesssesecessees

11

Listening

with

the

surround

effect

............ccersrsscrsorscrsecsees

11

RECOFING

vvssscsscccsscsnrcccascrasscscdeccsesseseceisosasseessenssvessnsscsiccess

12

Storing

other

manufacturer's

operating

codes

onto

the

Supplied

remote

COMMANAET

............ccssccsssorsrcesecercsesosreees

13

Programming

signals

of

other

audio/video

equipment...

13

Programming

a

new

signal

onto

a

previously

PFOGTAMMEM

DUION

......s.sssesrsssseeseresesssseersesscsssssssssesees

14

Controlling

CQUIPMENE...........cssserstsrsrsrsesessesrsestsnseees

14

General

SPECIICALONS

5

aiid

ca

cssvssesiessassuseasussavevecbeasetbeacersensteceedsenvens

15

TrOUDIESHOOTING

..........cscerssrsorssrscessssscssrssessesses

Back

cover

Precautions

On

safety

©

Operate

the

unit

only

on

120

V

AC,

60

Hz.

©

Should

any

solid

object

or

liquid

fall

into

the

unit,

unplug

it

and

have

it

checked

by

qualified

personnel

before

operating

it

any

further.

e

Unplug

the

unit

from

the

wall

outlet

if

it

is

not

to

be

used

for

an

extended

period

of

time.

To

disconnect

the

cord,

pull

it

out

by

grasping

the

plug.

Never

pull

the

cord

itself.

On

operation

Before

making

program

source

connections,

be

sure

to

turn

the

power

switch

off

and

unplug

the

unit.

On

cleaning

the

cabinet

Clean

the

cabinet,

panel

and

controls

with

a

soft

cloth

lightly

moistened

with

mild

detergent

solution.

Do

not

use

any

type

of

abrasive

pad,

scouring

powder

or

solvent

such

as

alcohol

or

benzine.

For

detailed

safety

precautions,

see

the

leaflet

“IMPORTANT

SAFEGUARDS’.

If

you

have

any

question

or

problem

concerning

your

unit,

please

consult

your

nearest

Sony

dealer.

UT

al

ercter

diate

m

7

aToloy-)iale

m=

Crelole

ml

meoler-htloya]

To

prevent

internal

heat

buildup

in

the

unit,

place

the

unit

in

a

location

with

adequate

air

circulation.

Do

not

install

the

unit:

©

near

heat

sources

such

as

radiators

or

air

ducts.

¢

in

a

place

subject

to

direct

sunlight,

excessive

dust,

mechanical

vibration

or

shock.

Do

not

place

anything

on

top

of

the

cabinet.

The

top

ventilation

holes

must

be

unobstructed

for

the

proper

operation

of

the

unit

and

to

prolong

the

life

of

its

components.

Do

not

throw

away

the

carton

and

packing

material!

It

will

be

an

ideal

container

when

transporting

the

unit

for

repair

work.

etc.

Remote

Commander.

eet

ie

ee

es

a

ners:

CERT

SN

eae

x

d

BP

pe

acleny

w

ronan

crete

he

van

gen

et

ten

peat

agetine

ot

=

The

remote

commander

supplied

with

this

unit

can

control

the

unit

from

a

distance.

The

remote

commander

is

divided

into

9

sections

according

to

the

functions

as

shown

below.

|

eo)

—_——

an

OoOqQgaclocd

eS

es

—

pas

Patent

of

==

om

|)

Serariatel

So

coOoqoco

maa

at

i

Program

control

section

Mode

selector

and

indicator:

SONY

STD:

To

control

Sony

equipment.

USER

STD:

To

contro!

equipment

whose

remote

control

functions

are

stored.

LEARN:

To

store

functions

of

other

remote

commanders

emitting

infrared

rays.

PROGRAM

CLEAR

button:

Clears

the

stored

functions.

[2]

Power

control

section

SYSTEM

OFF

button:

Turns

off

the

power

of

the

whole

system:

LDP,

VCR,

TV,

and

AUDIO.

LDPNVTRINTR2VTR3/TV/AUDIO

POWER

buttons:

Control

the

power

of

each

unit.

[8]

MODE

selector

Selects

the

function

mode

on

the

remote

commander.

1:To

select

the

functions

indicated

in

light

gray

such

as

DECK,

CD

player

and

surround

mode

of

amplifier.

2:To

select

the

functions

indicated

in

biue

such

as

VCR,

LDP

and

TV.

[4]

CD/LD

player

control

section

The

combined

CD/LD

player

can

be

controlled

with

LDP

position.

D.(disc)

SKIP:

Disc

skip

(for

a

CD

player

equipped

with

a

multi-disc

changer)

>:

Play

i:

Pause

@:

Stop

<¢</p>:

Manual

search

k¢<4/p>1;

Locates

a

desired

selection.

[5]

Tuner

contro!

section

SHIFT

button:

Selects

a

memory

page.

TUNER

PRESET

+/-

buttons:

Select

a

preset

station.

[6]

Tape

deck/VCR

control

section

ANT

(antenna)

TV/VTR

buttons:

Selects

the

output

signal

from

the

antenna

terminal

on

the

VCR,

either

a

TV

signal

or

VCR

programs.

VTR

CH

(channel)

+/-

buttons:

Select

channel

on

the

VCR.

<<>>:

Fast

winding

or

forwarding

@:

Recording

</>:

Play

@:

Stop

ii;

Pause

C.(cassette)

SKIP:

Cassette

skip

(for

a

cassette

deck

equipped

with

a

multi-cassette

changer)

REC

MODE

REV/FWD

buttons:

For

reverse

recording,

press

REV

and

@

together.

For

forward

recording,

press

FWD

and

@

together.

CD

SYNCHRO

(CD

synchronized

recording)

section

(The

playback

of

the

Sony

CD

player

equipped

with

a

remote

commander

and

the

recording

of

the

cassette

deck

can

be

performed

simultaneously.)

SYNCHRO:

Press

to

start

recording

of

the

cassette

deck

equipped

with

the

multi-changer

and

then

playback

of

the

CD

player.

STAND

BY:

Press

to

set

the

cassette

deck

to

the

record-

standby

mode.

-

START:

Press

to

start

recording

of

the

cassette

deck

and

then

playback

of

the

CD

player.

STOP:

Press

to

stop

the

recording

of

the

cassette

deck

and

playback

of

the

CD

player.

[8]

Amplifier/TV

section

TVMIDEO

button:

Selects

the

input

signal

of

the

TV.

(for

TV)

Program

number

(1

to

0)

and

ENTER

buttons:

Select

the

channel.

(for

TV)

SURROUND

mode

selectors

(for

the

AV

amplifier)

ON/OFF:

Turns

on/off

the

surround

mode.

MODE:

Selects

the

surround

mode.

T.(test)

TONE:

Outputs

test

tone’

to

each

speakers

in

‘succession.

DELAY:

Adjusts

the

delay

time.

FUNCTION

selectors:

Select

an

input

source

of

the

AV

~

amplifier.

(for

the

AV

amplifier)

(The

VIDEO

2,

3

and

4

do

not

function.

When

the

VIDEO

1

button

is

pressed,

the

AV

amplifier

enters

the

VIDEO

mode.)

CENTER

VOL

/TV

VOL

+/-

buttons:

Control

the

volume

of

center

speaker

or

TV.

(The

CENTER

VOL

+/-

buttons

function

for

the

AV

amplifier.)

REAR

VOL

/TV

CH

+/-

buttons:

Control

the

volume

of

rear

speakers

or

channel

of

TV.

(The

REAR

VOL

+/-

buttons

function

for

the

AV

amplifier.)

DBFB

button:

Turns

on/off

the

DBFB

(Dynamic

Bass

Feed

Back).

(for

the

AV

amplifier)

MASTER

VOL

+/-

buttons:

Control!

the

amplifier's

master

volume.

(for

the

AV

amplifier)

|

fe]

Reset

button

Reset

the

commander

to

the

initial

state.

Note

on

the

@

(recording)

button

under

[6]

Tape

deck/DAT/VCR

control

section

If

your

recorder

is

of

such

type

as

pressing

@

puts

it

in

recording

pause

mode,

first

press

@

on

this

commander

and

then

#4.

Note

The

</>

(play)

buttons

in

4)

and

[)

and

the

SHIFT

button,

PRESET

+/-

buttons

in

&]

and

CD

SYNCHRO

buttons

in

[7]

can

function

without

pressing

one

of

the

FUNCTION

buttons

in

&].

Inserting

the

batteries

into

the

remote

commander

":

Qinsert

two

size-AA

(R6)

batteries

with

correct

1

Open

the

cover.

Battery

life

About

half

a

year

of

normal

operation

can

be

expected

when

using

the

Sony

SUM-3

(NS)

batteries.

When

the

batteries

are

exhausted,

the

commander

can

no

longer

operate

the

unit.

Replace

both

batteries

with

new

ones.

To

avoid

battery

leakage

When

the

commander

is

not

to

be

used

for

a

long

period

of

time,

remove

the

batteries

to

avoid

damage

caused

by

battery

leakage

and

corrosion.

‘

To

avoid

malfunction

of

the

remote

commander

Avoid

keeping

the

remote

commander

under

extremely

hot

or

humid

locations.

Hooking

Up

the

Sy

At

first,

this

section

describes

about

the

connections

with

the

other

audio/video

equipments

and

speakers.

After

that,

it

also

shows

about

the

remote

control

system

and

AC

outlet.

Connect

the

AC

power

cord

last.

Make

sure

power

is

off.

eJacks

and

plugs

of

the

connection

cord

are

color-coded

as

follows:

Red

jacks

and

plugs:

For

the

right

channel

of

audio

signals

White

jacks

and

plugs:

For

the

left

channel

of

audio

signals

¢The

cable

connectors

should

be

fully

inserted

into

the

jacks.

Loose

connections

may

cause

hum

and

noise.

Ofole)

alzret

late

m

Nerel

le)

Equipment

:

Front

speakers

Right

Left

Rear

speakers

Right

Left

Tape

deck

CENTER

SPEAKER

to

LINE

OUT

to

LINE

IN

REAR

SPEAKER

TUNER

IN

VIDEO

IN

i

——

TumtableL_-+—___—_

7

ioe

(-

Ae

pasa

iP

||

TA-AV621

system

sane

ln

“>

to

a

wall

outlet

PHONO

IN

TAPE

REC

OUT

to

LINE

OUT

to

LINE

OUT

—s

|

ens

|

Tuner

——

to

AUDIO

OUT

CD

player

iz

a

|

ch

VCR

CONTROL

S

cord

(not

supplied)

AC

OUTLETs

(SWITCHED)

Connect

the

CONTROL

S

IN

jack

of

other

Sony

equipment

Use

these

to

power

audio

component

whose

power

with

the

CONTROL

S$

cord

for

whole

audio

system

remote

consumption

is

less

than

the

wattage

indicated

on

the

AC

control.

outlets.

These

outlets

are

controlled

by

the

SYSTEM

POWER

switch

on

the

front

panel.

CAUTION

;

Do

not

connect

any

electrical

home

appliances

such

as

an

electric

iron,

fan,

TV

or

other

high

wattage-equipment

to

these

AC

outlets.

Push

in

until

it

clicks.

To

disconnect.

6

Connecting

Speakers

Center

Rear

speaker

(R)

speaker

(L)

Front

speakers

Connect

the

front

speaker

systems

to

the

FRONT

SPEAKER

A

or/and

B

terminals.

They

can

be

selected

individually

or

simultaneously

with

the

SPEAKERS

selector.

Rear

speakers

Connect

the

rear

speaker

systems

to

the

REAR

SPEAKER

terminal

for

enjoying

surround

sound.

Center

speaker

You

can

connect

a

center

speaker

to

the

CENTER

SPEAKER

terminal

for

enjoying

surround

sound.

The

sound

such

as

a

dialog

comes

from

the

center.

‘Front

Front

speaker

(R)

speaker

(L)

TA-AV621

to

the

second

front

‘speaker

systems

Note

on

speaker

impedance

and

power

capacity

This

amplifier

is

designed

to

work

best

with

speakers

of

nominal

impedance

from

8

to

16

ohms

(Center

speaker:

from

4

to

16

ohms).

Be

sure

to

use

a

speaker

system

with

adequate

power

handling

capability.

Note

When

connecting

the

speaker

cord

to

the

speaker

terminal,

make

sure

that

the

polarity

(+

and

—)

of

the

speaker

cord

is

correct

.

If

the

polarity

is

reversed

at

either

speaker,

the

sound

will

be

distorted

and

will

lack

bass.

Getting

Ready

to

Eni

TC

oe

Eee

This

section

describes

about

selecting

the

speaker

configuration

for

the

surround

system

and

then

adjusting

the

speaker

volume

and

the

delay

time

of

the

rear

speakers

so

that

you

can

enjoy

the

Dolby

surround

sound.

Positioning

the

Speakers

Where

you

place

the

speakers

depends

on

the

size

and

acoustics

of

the

listening

room.

The

figure

below

are

just

examples.

We

recommend

that

you

experiment

to

find

the

speaker

direction

or

location

in

which

the

most

effective

acoustics

can

be

obtained.

Center

Front

speaker

(L)

g:

er

Front

speaker

(R)

Rear

speaker

(R)

Rear

speaker

(L)

Piacement

of

Speakers

and

Selecting

the

PRO

1Reoleilen

'(e)8)

3

The

Dolby*

Pro

Logic

Surround

Decoder

has

the

same

functions

for

playback,

such

as

movie

theaters

and

gives

a

theater-like

experience

in

your

listening

room,

naturally

reproducing

the

audio

sound

field.

The

TA-AV621

incorporates

a

decoder

which

reproduces

the

specially

encoded

surround

sound

of

Dolby

surround

video

programs.

In

the

SURROUND

mode,

a

speaker

operation

mode

can

be

selected

to

match

your

speaker

system.

A

center

speaker

is

required

in

addition

to

the

basic

four

speakers,

The

setting

on

which

the

vocal

image

will

be

located

on

the

center

of

the

TV

screen

is

better

affect

to

surround

effect.

In

the

SURROUND

mode,

select

the

speaker

operation

mode

according

to

your

speaker

configuration

by

pressing

the

PHANTOM,

NORMAL,

WIDE

or

3

CH

button.

DOLBY

PRO

LOGIC

MODE

buttons

*

Manufactured

under

license

from

Dolby

Laboratories

Licensing

Corporation.

Additionally

licensed

under

one

or

more

of

the

following

patents:

U.S.

numbers

3,632,886,

3,746,792,

and

3,959,590.

Canadian

numbers

1,004,603

and

1,037,877.

“DOLBY’

and

the

double-D

symbol

00

are

trademarks

of

Dolby

Laboratories

Licensing

Corporation.

PHANTOM

mode

Select

this

mode

when

you

do

not

use

center

speaker.

The

sound

of

the

center

channel.can

be

heard

from

the

front

speakers.

Front

speaker

(L)

J)

Front

speaker

(R)

SS

S==

SSS=

e®%-a

Rear

speaker

(L)

ima

Rear

speaker

(R)

NORMAL

mode

Select

this

mode

if

you

use

small

center

speaker.

The

bass

sound

of

the

center

channel

is

output

from

the

front

speakers,

as

small

speaker

cannot

produce

enough

bass.

Center

speaker

Front

speaker

(L)

CA

2g

a

Front

speaker

(R)

=

=,

=——_,

=

ES

=

@®

Rear

speaker

(L)

‘ai

ima

Rear

speaker

(R)

WIDE

mode

Select

this

mode

if

you

use

a

medium

to

big

center

speaker.

Center

speaker

Front

speaker

(L)

Bay)

fl

Front

speaker

(R)

i/

=

3CH

mode

Select

this

mode

when

you

do

not

use

rear

speakers.

Front

speaker

(R)

Adjusting

the

Speaker

Volume

To

adjust

the

surround

sound

to

the

maximum

on

playing

any

program

sources,

adjust

the

front,

rear

and

center

(if

connected)

speakers

to

the

same

volume

level.

The

adjustment

must

be

done

with

a

test

tone

in

the

DOLBY

PRO

LOGIC

MODE,

but

the

level

once

adjusted

can

be

used

for

al!

DOLBY

PRO

LOGIC

MODEs.

You

can

adjust

the

volume

level

from

your

listening

pease

by

zits

the

remote

commander.

Press

the

SURROUND

button

on

the

front

panel

or

SURROUND

ON/OFF

button

on

the

remote

commander

to

set

to

the

SURROUND

ON

mode.

Select

a

program

source

with

the

function

selector

and

start

playback.

Select

the

NORMAL

mode

with

the

NORMAL

button

on

the

front

panel.

Press

the

T.

TONE

button

on

the

remote

|

commander.

Al

5

Adjust

the

level

of

rear

speakers

with

the

REAR

LEVEL

+

or

—

button

on

the

front

panel

or

the

REAR

VOL

+

or

—

button

on

the

remote

commander.

Adjust

the

level

of

center

speaker

with

the

CENTER

LEVEL

+

or

—

button

on

the

front

panel

or

the

CENTER

VOL

+

or

—

button

on

the

remote

commander.

Press

the

T.TONE

button

on

the

remote

commander

to

set

to

off.

Sequence

of

the

test

tone

In

a

system

with

a

center

speaker:

The

test

tone

will

be

output

automatically

from

the

front

left,

center,

front

right,

and

the

rear

speakers

in

succession.

eae

|

3

CH

mode

Rear

left

and

right

Vi

In

a

system

without

a

center

speaker:

The

test

tone

will

be

output

automatically

from

the

front

speakers

and

rear

speakers

alternately.

Front

left

and

right

aa,

Rear

left

and

right

ia

;

atte

er

eras

Gents.

oe

Getti

Ready

to

Enjoy

sound

Adjusting

the

Delay

Time

of

the

Rear

Speakers

The

delay

time

is

a

time

between

the

surround

sound

from

the

front

and

that

from

rear

speakers.

Select

the

delay

time

15.0

ms,

20.0

ms

or

30.0

ms.

1

Press

the

SURROUND

button

on

the

front

panel

or

the

SURROUND

ON/OFF

button

on

the

remote

commander

to

set

to

the

SURROUND

mode.

2

Select

the

delay

time

with

the

DELAY

TIME

button

on

the

front

panel

or

the

DELAY

button

on

the

remote

commander.

To

turn

off

the

surround

effect

Press

the

SURROUND

button

on

the

front

panel

or

the

SURROUND

ON/OFF

button

on

the

remote

commander

again.

The

normal

sound

without

surround

effect

will

resume.

Both

level

and

delay

time

of

the

surround

is

memorized

each

time

after

adjusting.

They

will

be

restored

when

the

surround

mode

is

resumed.

Note

The

delay

time

for

the

rear

speakers

can

be

adjusted

even

in

the

3

CH

mode.

10

You

can

enjoy

superb

sounds

using

the

audio

adjustment

functions

as

shown

below.

MASTER

SPEAKERS

VOLUME

BASS

and

TREBLE

DBFB

BALANCE

PNolfUrcyalaremceyieliersy

To

increase

the

sound

level,

turn

the

MASTER

VOLUME

control

clockwise.

To

decrease

it,

turn

the

control

counterclockwise.

sXe}

lets)

tale

miatom

Moliarelale|

r=ttelare

Tolerate

Mi

sf-ltcleletsy

To

change

relative

strength

of

the

right

and

left

speaker

outputs,

adjust

the

BALANCE

control.

Adjusting

the

Tone

from

the

Front

Speaker

To

enhance

TREBLE

or

BASS

sound

from

the

front

speakers,

turn

the

TREBLE

or

BASS

control

clockwise.

To

attenuate

them,

turn

the

TREBLE

or

BASS

control

counterclockwise.

sXlialielaetalem

(atm

srct-meieolelale|

To

powerful

bass

sound,

press

the

DBFB

(Dynamic

Bass

Feed

Back)

button.

The

lower

the

volumes,

the

more

the

bass

sound

is

emphasized.

Selecting

the

Speaker

System

To

drive

speaker

system

A:

Set

the

SPEAKERS

selector

to

A

To

drive

speaker

system

B:

Set

the

SPEAKERS

selector

to

B

To

drive

both

speaker

systems

A

and

B

(series

connection):

Set

the

SPEAKERS

selector

to

A

+

B.

For

headphone

listening:

Connect

headphones

to

the

HEADPHONES

jack

and

set

the

SPEAKERS

selector

to

OFF.

To

turn

off

the

rear

and

center

speakers,

set

the

SURROUND

button

to

off.

IMPORTANT

Speaker

systems

A

and

B

are

series

connected.

When

only

one

speaker

system

is

connected,

no

sound

can

be

heard

at

the

A

+

B

position.

Sony TA-AV621 User manual

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