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INTEGRATED

STEREO

AMPLIFIER

TA-AX310

OPERATING

INSTRUCTIONS

Before

operating

the

unit,

please

read

this

manual

thoro¬

ughly.

This

manual

should

be

retained

for

future

reference.

©

1984

by

Sony

Corporation

OWNER’S

RECORD

The

model

and

serial

numbers

are

located

at

the

rear.

Record

the

serial

number

in

the

space

provided

below.

Refer

to

these

numbers

whenever

you

call

upon

your

Sony

dealer

regarding

this

product.

Model

No.

TA-AX310

Serial

No.

_

WARNING

To

prevent

fire

or

shock

hazard,

do

not

expose

the

unit

to

rain

or

mois¬

ture.

A

A

/

•

\

RISK

OF

ELECTRIC

SHOCK

DO

NOT

OPEN

CAUTION

TO

REDUCE

THE

RISK

OF

ELECTRIC

SHOCK,

DO

NOT

REMOVE

COVE

(OR

BACK).

NO

USER-SERVICEABLE

PARTS

INSIDE.

REFER

SERVICING

TO

QUALIFIED

SERVICE

PERSONNEL.

A

This

symbol

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.

TABLE

OF

CONTENTS

Features.

2

Precautions.

3

Function

of

controls.

4

System

connections.

6

Connection

notes.

6

Speaker

connection.

7

AC

outlets.

7

To

listen

to

a

record,

a

CD,

a

tuner

program

or

an

auxiliary

source.

To

listen

to

a

taped

program.

Tape

recording

To

record.9

Trouble

checks.9

Specifications.10

FEATURES

The

TA-AX310

integrated

stereo

amplifier

provides

dynamic

sound.

The

block

diagram

of

the

amplifier

is

shown

on

its

attractive

front

display

and

enables

the

signal

flow

to

be

read

at

a

single

glance.

•

Power

output

of

32

+

32

watts

(40

Hz

-20

kHz,

0.08%

THD).

•

Independent

CD

inputs

for

connecting

a

CD

player

to

your

stereo

system.

•

Ability

to

drive

two

pairs

of

speaker

systems

either

in¬

dividually

or

simultaneously.

A

This

symbol

is

intended

to

alert

the

user

to

the

presence

of

important

operating

/

I

\

and

mainteance

(servicing)

instructions

in

/

I

\

the

literature

accompanying

the

appl-

L

_

*

_A

iance.

2

CD

CO

00

PRECAUTIONS

On

safety

•

Operate

the

unit

only

on

120

V

ac,

60

Hz

•

Should

any

liquid

or

solid

object

fall

into

the

cabinet,

unplug

the

unit

and

have

it

checked

by

qualified

person¬

nel

before

operating

it

any

further.

•

Unplug

the

unit

from

the

wall

outlet

if

it

is

not

to

be

us¬

ed

for

an

extended

period

of

time.

To

disconnect

the

cord,

pull

it

out

by

grasping

the

plug.

Never

pull

the

cord

itself.

On

installation

•

Do

not

install

the

unit

in

a

location

near

heat

sources

such

as

radiators

or

air

ducts,

or

in

a

place

subject

to

direct

sunlight,

excessive

dust,

mechanical

vibration

or

shock.

•

Good

air

circulation

is

essential

to

prevent

internal

heat

build-up

in

the

unit.

Place

the

unit

in

a

location

with

adequate

air

circulation.

Do

not

place

the

unit

on

a

soft

surface,

such

as

a

rug

that

would

block

the

ventilation

holes

on

the

bottom.

•

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.

On

operation

•

Before

making

program

source

connections,

be

sure

to

turn

the

power

switch

off

and

unplug

the

unit.

•

When

the

unit

is

not

used,

turn

the

power

off,

to

con¬

serve

energy

and

to

extend

the

useful

life

of

your

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

sol¬

vent

such

as

alcohol

or

benzine.

On

repacking

Do

not

throw-away

the

carton

and

the

packing

material.

It

makes

an

ideal

container

to

transport

the

unit

in.

When

shipping

the

unit

for

repair

work

or

to

another

location,

repack

it

as

illustrated

on

the

carton

box.

For

the

customers

in

the

USA

For

detailed

safety

precautions,

see

the

leaflet

“IMPOR¬

TANT

SAFEGUARDS”

FUNCTION

OF

CONTROLS

Each

number

in

the

text

is

keyed

to

that

of

the

photo.

Front

panel

O

POWER

switch

Turns

the

operating

power

on

or

off.

0

Front

display

The

appropriate

indicator

lights

up

according

to

the

set¬

ting

of

each

control.

O

VOLUME

control'

Regulates

the

overall

sound

level.

Slide

towards

the

right

to

increase

the

sound

level.

O

LOUDNESS

switch

Normally

keep

the

switch

released

(n

OFF).

When

listening

to

program

sources

at

a

low

volume

setting,

depress

the

switch

(a

ON).

This

loudness

control

compensates

for

the

human

ear’s

decreased

response

to

very

low

frequency

sound

at

low

voume

levels,

and

provides

an

apparently

uniform

response.

0

MONITOR

TAPE

button

Press

this

button

to

listen

to

a

taped

program

con¬

nected

to

the

TAPE

RECORDER

REC

OUT

jacks.

The

TAPE

indicator

of

the

front

display

will

light

up.

Press

this

button

again

to

disengage

it.

0

FUNCTION

select

buttons

Press

one

of

these

buttons

to

select

a

desired

program

source

other

than

a

taped

program.

The

associated

in¬

dicator

of

the

pressed

buttons

will

light

up

on

the

display.

AUX

:

For

auxiliary

programs

(connected

to

AUX

inputs).

CD:

For

compact

disc

programs

(connected

to

CD

inputs).

TUNER

:

For

off-the-air

programs

(connected

to

TUNER

inputs)

PHONO:

For

record

programs

(connected

to

PHONO

inputs)

O

BASS

and

TREBLE

TONE

controls

These

controls

adjust

the

bass

and

treble

response.

Slide

towards

the

right

(+)

to

increase

the

response

and

to

the

left

(-)

to

decrease

the

response.

O

BALANCE

control

Governs

the

amount

of

sound

coming

from

each

paired

speaker

to

get

optimum

stereo

effect.

Normally,

keep

this

at

the

center

position.

O

HEADPHONES

jack

Accepts

any

low

impedance

stereo

headphones.

For

headphone

monitoring

only,

keep

both

SPEAKERS

select

buttons

A

and

B

released.

©

SPEAKERS

select

buttons

Select

speaker

system

A

or

B,

or

both.

4

Rear

panel

0

Ground

terminal

For

a

turntable

system

with

a

ground

wire,

be

sure

to

connect

it

to

this

terminal

to

prevent

hum.

If

hum

still

exists,

it

may

be

helpful

to

connect

the

ground

terminal

directly

to

earth

via

a

ground

rod.

©

PHONO

inputs

(phono

jack)

Accept

the

output

of

a

turntable

system

with

an

MM

(moving

magnet)-type

cartridge.

©

TUNER

inputs

(phono

jack)

Accept

the

output

of

a

tuner.

©

CD

(compact

disc)

inputs

(phono

jack)

Accept

the

output

of

a

compact

disc

player.

©

AUX

(auxiliary)

inputs

(phono

jack)

Accept

various

input

sources

such

as

a

tape

deck

(for

playback

only),

an

additional

tuner,

etc.

©

TAPE

RECORDER

inputs/outputs

(phono

jack)

The

TAPE

inputs

accept

the

outputs

of

a

tape

deck

for

playing

back

tapes.

The

REC

OUT

(outputs)

accept

the

inputs

of

a

tape

deck

for

tape

recording.

Note:

The

AUX,

CD,

TUNER

and

TAPE

RECORDER

TAPE

inputs

are

identical

in

sensitivity

and

input

impedance.

©

SPEAKER

terminals

For

connecting

a

pair

of

speaker

system

or

two

pairs

of

speaker

systems.

System

A

and

system

B

can

be

selected

by

means

of

the

front

panel

SPEAKERS

select

buttons.

©

AC

OUTLETS

These

are

used

to

power

other

audio

components

whose

power

consumption

is

less

than

the

wattage

in¬

dicated

on

the

ac

outlet.

SYSTEM

CONNECTIONS

CONNECTION

NOTES

•

The

power

cord

should

be

connected

last

of

all,

first

making

sure

that

the

POWER

switch

is

turned

off.

•

When

connecting

program

sources

or

tape

recorders,

note

that

the

red

jacks

of

the

amplifier

are

for

right-

channel

connections

and

the

white

jacks

for

left-

channel

connections.

•

The

cable

connectors

should

be

fully

inserted

into

the

jacks.

A

loose

connection

may

cause

hum

and

noise.

SPEAKER

CONNECTION

The

unit

has

provision

for

two

pairs

of

speaker

systems—

system

A

and

system

B—which

can

be

selected

individually

or

simultaneously

by

means

of

the

front

panel

SPEAKERS

select

buttons.

Note

that

the

speaker

systems

A

and

B

are

series-

connected.

Connect

the

second

speaker

system

to

the

SPEAKER

B

inputs.

No

sound

will

be

heard

if

only

one

of

the

speaker

systems

is

connected

and

the

SPEAKERS

select

but¬

tons

A

and

B

are

depressed.

Speaker

impedance

and

power

capacity

This

amplifier

is

designed

to

work

best

with

speakers

having

nominal

impedance

from

8

to

16

ohms,

and

rated

at

32

watts

minimum

RMS

per

channel

with

an

8-ohm

load

from

40

-

20,000

Hz.

Be

sure

not

to

use

speakers

with

impedance

less

than

8

ohms

and

to

use

adequate

power

handling

capabilities.

Speaker

cord

connection

"|

Strip

the

outer

covering

and

twist

the

wires.

Speaker

placement

Here

are

a

few

suggestions

on

basic

speaker

placement.

—

Place

each

speaker

with

its

back

3—5

cm

(1V«-2”)

from

a

hard

wall

in

a

similar

acoustic

environment.

—

Set

your

speaker

system

up

on

a

hard,

flat

floor

or

pedestals.

Carpets,

draperies

and

upholstered

fur¬

niture

will

miminize

the

multiple

reflections

of

high-

frequency

sound

which

reduce

the

stereo

effect.

—

Generally

we

recommend

that

the

speaker/listener

relationship

be

an

equilateral

triangle.

If

the

speaker

separation

is

too

wide,

face

the

speakers

a

little

towards

each

other.

V©

-Wall

1

-

“1

Approx.

15

mm

Twist

tightly

O

Keep

the

terminal

button

depressed

and

fully

insert

^

the

wires

into

the

slot,

and

then

release

the

button.

Pull

on

the

speaker

cord

lightly

to

see

if

the

connec¬

tion

is

secure.

—

Place

the

speakers

no

higher

than

your

ears

when

you

are

seated,

if

the

speakers

are

to

be

positioned

above

the

floor.

AC

OUTLETS

These

are

used

to

power

other

audio

components

whose

total

power

consumption

is

less

than

the

in¬

dicated

wattage.

The

SWITCHED

outlets

are

controlled

by

the

front

panel

POWER

switch.

The

UNSWITCHED

outlet

is

not

controlled

by

the

POWER

switch.

Do

not

connect

any

electrical

home

appliance

such

as

an

electric

iron,

fan,

TV

or

other

high-wattage

equip¬

ment

to

these

ac

outlets.

Generally

speaker

cords

are

coded

with

color,

or

mark,

indicating

the

©

©

polarities.

Remember

the

coding

and

prevent

faulty

connections.

Right

speaker:

to

R

SPEAKER

terminals

Left

speaker:

to

L

SPEAKER

terminals

©

code:

for

©

connection

©

code:

for

©

connection

7

TO

LISTEN

TO

A

RECORD,

A

CD,

A

TUNER

PROGRAM

OR

AN

AUXILIARY

SOURCE

1

2

6

3

4

1

Depress

the

POWER

switches

of

the

amplifier

and

connected

source

equipment

to

ON.

2

Select

the

speaker

system

used

with

the

SPEAKERS

select

buttons.

To

drive

speaker

system

A:

depress

A

button.

To

drive

speaker

system

B:

depress

B

button.

To

drive

both

speaker

systems:

depress

A

and

B

buttons.

For

headphone

listening

only:

keep

both

buttons

released.

3

If

the

TAPE

indicator

lights

up,

press

the

TAPE

but¬

ton

to

disengage

it.

4

Press

the

appropriate

function

select

button.

For

an

auxiliary

source

connected

to

the

AUX

jacks,

press

AUX.

For

a

CD

program,

press

CD.

For

a

tuner

program,

press

TUNER.

For

a

record

program,

press

PFIONO.

5

Start

the

program.

6

Adjust

the

volume

with

the

VOLUME

control.

TO

LISTEN

TO

A

TAPED

PROGRAM

12

5

3

l|]

\

i

/

\

j

\

|

A:

|

It

!

It

1

i

L

tlrrnrmr—ir-|rnl|

;

i

.

if

:

"f

1

ik.!

i.

©

—[_

J

-

_

—

i-

__

7

,

fll

lS

4

Tape

deck

(for

playback)

1

Depress

the

POWER

switches

of

the

amplifier

and

the

tape

deck

to

ON.

2

Select

the

speaker

system

with

the

SPEAKERS

select

button.

3

Press

the

TAPE

button.

4

Start

playback.

5

Adjust

the

volume

with

the

VOLUME

control.

Use

the

BASS

and

TREBLE

tone

controls

according

to

the

room

acoustics.

Depress

the

LOUDNESS

switch

when

listening

to

the

program

source

at

a

low

volume.

Example

of

the

signal

flow:

When

listening

to

a

taped

program.

Use

the

BASS

and

TREBLE

TONE

controls

according

to

the

room

acoustics.

Depress

the

LOUDNESS

switch

when

listening

to

the

program

source

at

a

low

volume.

The

TAPE

button

has

priority

over

the

function

buttons

(PFIONO,

TUNER,

CD

and

AUX)

if

they

are

engaged

at

the

same

time.

Example

of

the

signal

flow:

When

listening

to

a

CD

program.

8

TAPE

RECORDING

TROUBLE

CHECKS

TO

RECORD

You

can

record

any

program

source

using

a

tape

recorder

connected

to

the

TAPE

RECORDER

REC

OUT

jacks.

1

3

2

I

\

t

1

Depress

the

POWER

switch

to

ON.

2

Select

the

program

to

be

recorded

with

the

function

select

button.

3

If

the

TAPE

indicator

lights

up,

'press

the

TAPE

button.

4

Start

the

program

and

set

the

tape

deck

in

recording

mode.

The

VOLUME

and

TONE

controls

and

the.LOUDNESS

switch

have

no

effect

on

recording.

Monitgring

of

a

3-head

tape

recorder

If

your

tape

deck

has

a

separate

record

and

playback

head,

you

can

monitor

the

recording

results

by

pressing

the

TAPE

button.

To

listen

to

the

program

source,

release

the

TAPE

button

and

press

the

appropriate

func¬

tion

select

button.

In

this

case,

the

recorder

should

be

connected

to

the

TAPE

inputs

and

REC

OUT

jacks

and

its

tape

monitor

switch

should

be

at

the

TAPE

position.

Should

any

problem

persist

after

you

have

made

these

checks,

consult

your

nearest

Sony

service

facility.

Before

going

through

the

check

list

below,

first

refer

back

to

the

connection

and

operating

procedures.

No

audio

•

Check

speaker

and

program

source

connections.

•

Check

the

settings

of

the

TAPE

and

FUNCTION

select

buttons.

Release

the

TAPE

button

when

not

listening

to

a

taped

program.

•

Check

the

setting

of

the

SPEAKERS

select

buttons.

•

Turn

up

the

volume.

No

audio

from

one

channel

or

unbalanced

left

and

right

volume

•

Adjust

the

BALANCE

control.

•

Check

the

speaker

and

input

connections

of

the

in¬

operative

channel.

Abrupt

loss

of

sound

from

one

or

both

of

the

speakers

*

•

Turn

off

the

amplifier

and

check

the

speaker

terminals

or

speaker

cord

for

a

short.

•

Reduce

the

volume

and

wait

a

few

minutes

to

see

if

the

power

is

turned

on

again.

Lack

of

bass

sound

or

obscure

instrument

position

•

Check

the

speaker

connection

for

proper

phasing.

Severe

hum

or

noise

•

Keep

the

connecting

cords

away

from

transformers

or

motors

and

at

least

3

meters

(10

feet)

from

TV

sets

and

fluorescent

lights.

•

If

the

TV

set

and

audio

components

are

too

close

together

do

not

use

both

TV

set

and

audio

components

at

the

same

time.

If

both

are

used

at

the

same

time,

separate

the

TV

set

from

the

audio

components.

•

Ground

the

turntable

system.

•

Make

secure

connections.

•

Wipe

the

plugs

and

jacks

with

a

cloth

lightly

dampen¬

ed

with

methanol.

•

This

symptom

may

be

caused

when

the

protection

circuits

activate.

9

SPECIFICATIONS

AUDIO

POWER

SPECIFICATIONS

POWER

OUTPUT

AND

TOTAL

HARMONIC

DISTORTION:

With

8

ohm

loads,

both

channels

driven,

from

40-20,000

Hz;

rated

32

watts

per

channel

minimum

RMS

power,

with

no

more

than

0.08%

total

harmonic

distor¬

tion

from

250

milliwatts

to

rated

output.

OTHER

SPECIFICATIONS

Amplifier

section

Power

bandwidth

(IHF)

20

Hz

30

kHz

Dynamic

headroom

1.2

dB

(78

IHF)

Harmonic

distortion

Less

than

0.08%

at

rated

output

Intermodulation

(IM)

distortion

i60

Hr

7

kHz

=

Less

than

0.08%

at

rated

output

Frequency

response

PHONO

:

RIAA

equalization

curve

±0.5

dB

TUNER

1

CD

!

AUX

>

15

Hz

70

kHz

±3.0

dB

TAPE

I

Residual

noise

Less

than

100

jW

(8

ohms,

network

A)

Damping

factor

36

(8

ohms,

1

kHz)

Inputs

Sensitivity

Impedance

Maximum

input

capability

(1

kHz)

S/N

(weighting

network,

input

level)

PHONO

2.0

mV

50

kilohms

120

mV

70

dB

74

dB

*

(A.

2.0

mV)

TUNER

CD

AUX

TAPE

150

mV

50

kilohms

—

98

dB

85

dB*

(A.

150

mV)

*

78

IHF

Outputs

REC

OUT

Voltage

150

mV

Impedance

4.7

k

ohms

SPEAKER

Accepts

speakers

of

8

16

ohms.

HEADPHONES

Accepts

low

impedance

head¬

phones.

Tone

controls

BASS

±8

dB

at

100

Hz

(turnover

freq.

300

Hz)

TREBLE

±7

dB

at

10

kHz

(turnover

freq.

3

kHz)

Loudness

(Att.

30

dB)

6

dB

at

100

Hz

10

General

System

Preamplifier

section

:

low-noise

1C

NF

type

equalizer

amplifier

Power

amplifier

section

:

quasi¬

complementary

SEPP

OTL

OCL

power

amplifier

with

all

stages

direct

coupled

Power

requirements

120

V

ac.

60

Hz

Power

consumption

75

W

AC

outlets

2

switched

total

100

watts

max.

1

unswitched

100

watts

max.

Dimensions

430

x

106

x

285

(w/h/d)

(17'/e

x

4‘/<

x

iii/

4

inches)

including

projecting

parts

and

controls

Weight

Approx.

4.8

kg

(10

lbs

9

oz)

net

Approx.

6.3

kg

(13

lbs

14

oz)

in

shipping

carton

Design

and

specifications

subject

to

change

without

notice.