Pioneer SX-950 User manual

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AM/FM

STEREO

RECEIVER

SX-950

OPERATING

INSTRUCTIONS

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fe

I.

CONTENTS

IMPORTANT—LINE

VOLTAGE

The

SX-950

is

provided

with

a

line

voltage

selector

[BppceLpt

Line

Voltage

00+

-

<0

oe

--

0

2

Eaportant-Line

Voltege.-

-

-

on

the

rear

panel

(Fig.

A).

This

is

normally

pre-set

to

220V,

so

before

using

for

the

first

time,

or

if

the

Stereo

System

Composition

........-++-

9

unit

is

to

be

used

in

a

different

area,

it

is

important

SK-950

Features

......-6--

serene

3

to

check

the

compatibility

of

the

selector

setting.

Connection

Diagram

......-.-------55

4

CHANGING

THE

LINE

VOLTAGE

SETTING

:

;

1.

Disconnect

the

A.C.

mains

cord.

Connections

.----

+--+

reer

errr

6

2.Use

a

Phillips

screwdriver

to

take

out

the

.

ati

VOLTAGE

SELECTOR

plug

locking

screw.

Antenna

and

Ground

Connections

.......

7

) ; ;

a

SARL

3.

Pull

out

the

VOLTAGE

SELECTOR

plug

from

Front

Panel

Facilities

.....-..-...--45:

8

the

socket.

.

4.

Rotate

the

plug

until

the

cutway

aligns

with

the

How

to

Operate

the

Receiver

.-..------.

ae

appropriate

line

voltage

marker

on

the

back

of

Tape

Deck

Operation

......-...0--55-

12

the

unit,

and

then

replace

it

in

the

socket.

5.

Replace

the

locking

screw,

Adaptor

Jacks

for

Increased

Versatility

...

14

Employing

PRE

OUT

and

POWER

IN

Jacks

............0-+55

16

Conditions

Frequently

Mistaken

for

Malfunction’

i.

3s

.ciaas

oe

bees

o

beg

AT

SCREW

PLUG

Specifications

........0-

626

e

ee

ee

eee

18

LINE

VOLTAGE

een

ae

ens

ve

Seen

ee

J

4

SELECTOR

STEREO

SYSTEM

COMPOSITION

Tape

Deck

@

Be

sure

to

install

reel

clamps

when

using

vertically.

®

Always

keep

heads

ciean.

2

Do

not

neglect

recorded

tape

for

long

periods.

®

Avoid

magnetic

fields.

.

Tat

ao

——-

Turntable

*

Protect

from

vibrations

and

close

dust

cover

whenever

possible,

®

Store

records

vertically

and

protect

from

dust

and

dirt.

Speaker

System

Rear

and

side

panels

of

jeft

and

right

speakers

should

have

the

same

surroundings.

{Piacing

with

rear

panel

against

a

wall

improves

bass)

Install

speakers

so

that

vibra

tions

are

not

transferred

di-

rectly

to

the

floor,

(Employ

stands

or

concrete

blocks

with

bookshelf

type

speakers)

Thick

curtain

shuts

out

direct

suntight,

SUN

$X-950

(Keep

connecting

—

{

4

cords

as

short

as

possibie.}

:

Tin

ea

Se

Gif

;

N\

—

pete

Absorbs

sound

and

vibrations

Furniture

materials

can

improve

tone.

:

7

i

(Placing

in

front

of

speakers

is

also

effective.)

Listening

position

slightly

to

the

rear

of

the

apex

of

an

equilateral

triangle

formed

with

teft

and

right

speakers

®

Do

not

place

equipment

in

locations

that

are

unlevel

or

subject

to

vibration.

®

Allow

for

good

rear

panel

ventilation

of

components;

avoid

humidity

and

dust.

®

Keep

equipment

away

from

radiators

or

other

heat

source.

SX-950

FEATURES

LATEST

TECHNOLOGY

FRONT

END

Two

dual

gate

MOS

FETs

(field

effect

transistors),

RF

amplification

and

a

buffer

amplifier

between

the

local

oscillator

and

mixer

stages

exemplify

the

advanced

tech-

nology

built

into

the

FM

front

end.

Together

with

carefully

selected

circuit

components,

this

provides

outstanding

per-

formance

in

terms

of

sensitivity,

overload

resistance,

image

rejection

and

spurious

rejection.

In

all

of

its

specifications,

the

SX-950

FM

tuner

section

compares

favorably

with

the

most

respected

separate

component

type

tuners.

HIGH

SELECTIVITY

IF

STAGES

Excellent

capture

ratio,

stable

operation

and

sharp

selec-

tivity

are

assured

by

three

ceramic

filters

in

the

IF

stages

and

IC

fimiters.

The

filters

never

need

realignment

and

contribute

to

high

reliability

against

aging

and

ambient.

temperature

variations.

QUADRATURE

DETECTOR

AND

PLL

MPX

DEMODULATOR

A

balanced

bridge

differential

amplifier

performs

quad-

rature

detection

of

the

FM

signal.

Linearity

is

assured

throughout

the

frequency

band,

while

distortion

becomes

minimized.

Clear

and

stable

separation

is

provided

by

the

PLL

(phase

locked

loop)

multiplex

circuit

design.

REDUCED

DISTORTION

AM

CIRCUIT

Careful

engineering

is

also

evident

in

the

AM

tuner

circuit.

Automatic

gain

control

in

the

RF

and

IF

stages,

together

with

a

3-gang

variable

capacitor

and

IC

circuitry

deliver

improved

image

ratio,

selectivity

and

frequency

response,

plus

reduced

distortion.

HEAVY

DUTY

SPLIT

POWER

SUPPLY

The

dual

positive

and

negative

power

supply

incorporates

extra

large

22,000

uF

electrolytic

capacitors

and

possesses

plenty

of

reserve

power.

Protection

and

muting

functions

are

included

to

both

safeguard

equipment

and

eliminate

power

on-off

noise.

PRECISION

RIAA

PHONO

EQUALIZER

Deviation

from

the

RIAA

standard

is

performed

within

+£0.3dB,

while

the

ability

of

the

phono

inputs

to

accept

relatively

strong

signal

fevels

without

distortion

(200

mV

rms)

results

in

a

wide

dynamic

range.

HIGH

RELIABILITY

PROTECTION

CIRCUIT

In

the

event

of

malfunction,

valuable

semiconductors

and

speakers

are

protected

by

a

relay

electronic

protection

circuit

that

detects

DC

output

voltage

or

impedance

over-

load.

This

ciecuit

also

functions

to

reduce

noise

during

ON-OFF

operation

of

the

power

supply.

—

ee

ee

(OMICS

VERSATILE

TONE

CONTROLS

PLUS

TURN-

OVER

SELECTORS

Active

NFB

type

bass

and

treble

control

circuits

provide

precise

and

stable

control

without

affecting

the

mid-range.

Turnover

frequency

selector

switches

determine

the

points

at

which

the

tone

controls

take

effect,

and

a

convenient

tone

on-off

switch

is

also

employed

to

allow

a

flat

frequency

response

to

be

obtained

at

any

time

regardless

of

tone

contro!

and

turnover

switch

settings.

This

is

useful

for

checking

the

effects

of

the

phono

cartridge,

speakers,

listening

room

acoustics,

etc.

on

the

spaciousness

of

the

sound.

DIRECT

COUPLED

POWER

AMPLIFIER

The

power

amplifier

of

the

SX-950,

is

a

direct-coupled,

pure

complementary

parrallel

push

pull

circuit,

which

uses

a

differential

amplifier

at

first

stage.

SX-950

delivers

Continuous

power

output

of

85

watts"

per

chan-

nel

min,

RMS

at

8

ohms

from

20

Hz

to

20,000

Hz

with

no

more

than

0.1%

total

harmonic

distortion.

Plently

of

power

is

available

for

rich

and

stable

stereo

reproduction.

IMPORTANT

ADDITIONAL

FEATURES

Two

tape

monitor

circuits

allow

two

stereo

tape

decks

to

be

used

for

recording,

playback

and

tape

duplication.

Microphone

input

on

the

front

panel

adds

to

versatility

and

enjoyment.

The

audio

muting

switch

can

be

used

to

temporarily

reduce

~

the

volume

by

20dB

when

changing

records

or

tapes

or

for

other

reasons,

without

continually

adjusting

the

volume

control.

tndicator

lamps

provide

clear

indication

of

operating

mode.

TASTEFUL

STYLING

COMPLEMENTS

HIGH

PERFORMANCE

The

exquisitely

designed

aluminum

front

panel

is

trimmed

with

solid

walnut.

Control

functions

and

layout

also

add

to

both

versatility

and

top

grade

components

appearance.

In

comvination

with

high

quality

source

components

and

speaker

systems,

a

magnificent

stereophonic

music

system

is

composed

for

providing

rich

audio

enjoyment.

*

Measured

pursant

to

Federal

Trade

Commission's

Trade

Regulation

rule

on

Power

Output

Claims

for

Amplifiers.

3

CONNECTION

DIAGRAM

TURNTABLE

TURNTABLE

CARTRIDGE

TAPE

PLAYER

QUTDOOR

FM

ANTENNA

T-TYPE

FM

ANTENNA

jel

came

a

PRE/POWER

AMP.

ern

The

bridge

connecting

plugs

between

PRE

OUT

a

POWER

IN

jacks

should

always

be

left

in

position

(F

normal

use.

Hf

they

are

disconnected

or

removed,

no

sound

will

come

from

the

speakers.

Always

be

sure

to

switch

off

the

power

supply

before

atternpting

to

remove

them.

For

the

applications

of

the

PRE

OUT

and

POWER

Jacks,

please

refer

to

the

section

on

“EMPLOYING

PRE

OUT

AND

POWER

IN

JACKS”

on

page

16.

oe

AM

ANTENNA

yee

ates

(Indoor

or

Outdoor)

GND

SPEAKER

SYSTEMS

A

i

aN

PE

DECK

-reel,

cassette)

TAPE

DECK

{Open-reel,

cassette)

DOLBY

NR

ADAPTOR

4

CHANNEL

DISCRETE

ou

FOR

USE

IN

UNITED

KINGDOM

ONLY

CAUTION

240V

Mains

supply

voltage

is

factory

adjusted

at

240

volts.

WARNING

THIS

APPARATUS

MUST

BE

EARTHED

IMPORTANT

The

wires

in

this

mains

lead

are

coloured

in

ac-

VOLTAGE

CONNECT

TO!

cordance

with

the

following

code:

SELECTOR

AC

CORD

|

Green-and-Yellow:

Earth

i

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

green-and-yellow

must

be

connected

to

the

terminal

in

the

plug

which

is

marked

by

the

letter

KE

or

by

the

safety

earth

symbol

—s

or

coloured

green

or

green-and-yellow.

The

wire

which

is

coloured

blue

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

N

or

coloured

blue

or

black.

The

wire

which

is

coloured

brown

must

be

con-

nected

to

the

terminal

which

is

marked

with

the

letter

L

or

coloured

brown

or

red.

"

The

AC

Outlets

of

this

apparatus

have

been

re-

a

=

moved

from

this

apparatus

in

order

to

comply

with

IGHT

U.K.

Safety

Regulation.

Ensure

that

your

equip-

SPEAKER SYSTEMS

B

SPEAKER

SYSTEMS

C

ment

is

connected

correctly~

if

you

are

in

doubt,

consult

a

qualified

electrician.

=i

*

The

word

“Dolby”

is

a

trademark

of

Dolby

Laboratories

Inc.

ie

errs

=

CONNECTIONS

SPEAKER

SYSTEM

CONNECTION

The

receiver

is

equipped

with

three

sets

of

speaker

terminals

(A,

B,

and

C).

Use

the

A

terminals

for

the

speakers

in

normal

use.

As

shown

in

Fig.

1,

the

upper

socket

(red)

is

the

positive

(+)

terminal,

and

the

lower

(black)

is

the

negative

(~)

terminal

in

each

case.

In

the

same

way,

the

speakers

have

positive

and

negative

polarity

(+

and

—

terminals).

Be

sure

to

connect

terminals

of

the

same

polarity

together

(+

to

+,

and

~

to

~).

NOTE

When

two

sets

of

speaker

systems

are

being

used

at

the

same

time

(A

+

B,

A

+

C,

or

B

+

C),

please

ensure

that

the

impedance

of

each

speaker

system

is

not

less

than

85.

if

speaker

systems

with

impedances

below

89

are

used,

the

receiver’s

protection

circuit

may

operate

to

prevent

sound

being

produced.

SPEAKER

OUTPUT

TERMINALS

RIGHT

CHANNEL

LEFT

CHANNEL

RIGHT

SPEAKER

SYSTEM

LEFT

SPEAKER

SYSTEM

Fig.

7

Speaker

Lead

Wire

Preparation

&

Connection

(Fig.

2)

1.

Strip

about

10mm

(3/8

inch)

of

the

insulation

from

the

end

of

the

speaker

lead

wire.

2. 1f

the

conductor

is

stranded,

twist

the

strands

together

so

they

do

not

come

loose.

8.

Depress

the

black

colored

lever

of

the

speaker

terminal

and

insert

the

speaker

minus

lead

wire

into

the

hole

above

the

lever.

Return

the

lever

to

its

former

position.

4.

Push

up

the

red

colored

lever

of

the

speaker

terminal

and

insert

the

speaker

plus

lead

wire

into

the

hole

below

the

lever.

Return

the

lever

to

its

former

position.

Speaker

lead-wire

p-10mm-—

.

~

Remove

insulation

from

wire

end.

Twist

stranded

wire.

lever

Jever

=

Speaker

lead

-wires

Fig.

2

TURNTABLE

CONNECTIONS

The

receiver

is

fitted

with

two

sets

of

input

Jacks,

PHONO

1

and

PHONO

2,

enabling

two

turntables

fitted

with

magnetic

phono

cartridges

to

be

con-

nected.

®

Connections

between

the

turntable

OUTPUT

terminals

and

the

receiver

PHONO

input

jacks

should

be

made

as

shown

in

Fig.

3,

taking

care

not

to

confuse

L &

R

channels.

If,

as

in

Fig.

3,

the

turntable

is

fitted

with

a

ground

lead

or

plug,

this

should

be

connected

to

the

receiver

GND

terminal.

NOTES:

I,

When

using

a

turntable

fitted

with

two

tonearms,

the

oulput

leads

for

each

of

the

tonearms

should

be

eon-

nected

to

the

respective

PHONO

input

jacks

(1

and

2).

2.

When

using

a

turntable

fitted

with

a

moving

coil

(MC)

phono

cartridge,

it

is

essential

to

use

a

special

MC

matching

transformer

or

head

amplifier.

TURNTABLE

GROUND

WIRE

y

eee

7

ae

CARTRIOGE

|

TAPE

PLAYER

—~

USE

OF

THE

AUX

INPUT

JACKS

These

are

a

set

of

spare

input

jacks,

which

can

be

connected

to

a

cartridge

tape

player,

television

sound

tuner,

or

other

signal

source.

The

upper

of

the

two

jacks

is

the

L

(left)

channel,

and

the

lower

is

the

R

(right)

channel

(Fig.

3).

i

TOMI

CI

ANTENNA

AND

GROUND

CONNECTIONS

FM

ANTENNA

CONNECTIONS

For

the

best

results

you

should

use

an

outdoor-

type

FM

antenna,

although

the

simple

T-type

antenna

supplied

with

the

receiver

may

be

used

satisfactorily

in

areas

of

high

signal

strength

(for

instance,

those

very

near

to

the

FM

station,

or

in

a

house

of

all-wooden

construction).

FM

Outdoor

Antenna

Normally,

install

antenna

as

follows.

e

Connect

antenna

feeder

wire

to

the

8002

antenna

terminals

of

the

SX-950

as

shown

in

Fig.

4,

®

While

listening

to

broadcasts,

as

described

on

page

10,

install

the

antenna

and

determine

the

best

location

for

optimum

reception.

Secure

antenna

firmly.

Outdoor

AM

antenna

Station

direction

Outdoor

FM

antenna

{special

antenna)

AM

terminal

feeder

terminais

Fig.

4

NOTE:

Urban

areas

with

heavy

traffic,

industrial

zones,

or

loca-

tions

near

high

voltage

power

lines

may

experience

interference

even

with

a

special

FM

antenna.

In

such

cases

seek

the

advice

of

an

audio

dealer.

It

may

be

advisable

to

employ

75Q

coaxial

cable

to

connect

the

antenna

to

the

S¥-950

75Q

UNBAL

connector.

752

UNBAL

Connector

ANTENNA

p)

y

TERMINAL

!

752

Coaxial

cabie

Fig.

5

T-type

Antenna

The

accompanying

T-type

antenna

can

be

used

where

FM

signals

are

strong.

Connect

it

to

the

antenna

terminals

as

shown

in

Fig.6.

While

listening

to

an

FM

station,

spread

the

two

arms

horizontally

and

determine

its

best

orientation.

Secure

it

to

a

wall

or

ceiling.

See

FM

Reception

on

page

10.

Indoor

AM

antenna,

Station

direction

vinyl

insulated

wire

4

"

:

XN

Fasten

with

tacks

Fig.

6

AM

ANTENNA

Normally,

position

the

ferrite

bar

antenna

(Fig.

7)

for

best

reception

while

listening

to

an

AM

station

as

described

on

page

10.

AM

Indoor

Antenna

If

reception

is

difficult

with

the bar

antenna,

an

indoor

AM

antenna

can

be

erected

with

vinyl

insulated

wire

as

shown

in

Fig.

6.

AM

Outdoor Antenna

For

optimum

AM

reception,

an

outdoor

AM

antenna

using

vinyl

insulated

wire

can

be

erected

as

shown

in

Fig.

4.

AM

ferrite

bar

antenna

Fig,

7

GROUND

For

maximum

safety

and

to

eliminate

noise,

con-

nect

the

GND

terminal

to

an

earth

ground

if

at

all

possible.

See

Fig.

4.

|

:

|

ae

FRONT

PANEL

FACILITIES

SPEAKER

BUTTONS

Three

sets

of

speaker

terminals,

A,

B,

and

C,

are

provided

on

the

rear

panel,

and

the

required

speaker

systems

can

be

selected

by

depressing

the

SPEAKERS

buttons

as

follaws:

Bictea

Set

aad

wa

Speaker

systems

A

operate

Boe

de

Se

teas

Speaker

systems

B

operate

C

.....

2...

..

Speaker

systems

C

operate

NOTES

1.

When

any

two

buitons

(A+B.

B+C,

C+A)

are

depressed

simultaneously,

the

corresponding

pairs

of

speaker

systems

will

come

into

operation.

However,

ti

is

not

possible

io

operate

all

three

speaker

systems

at

the

same

lime,

even

though

all

the

buttons

are

depressed.

.

For

private

listening

through

headphones,

return

all

the

SPEAKERS

buttons

to

the

OFF

(undepressed)

posraen

PHONES

OUTPUT

JACK

—.—..

Accepts

stereo

headphones.

POWER

SWITCH

eee

After

turning

this

switch

ON

there

is

a

delay

of

some

3

to

6

seconds,

during

which

time

the

protection

circuit

operates

to

eliminate

unpleasant

noise.

BASS

CONTROL

Clockwise

rotation

gives

stronger

emphasis

to

the

bass

range

below

the

turnover

frequency

(which

is

selected

by

the

BASS

TURNOVER

switch),

while

counterclockwise

rotation

reduces

bass

response.

BASS

TURNOVER

SWITCH

This

selects

the

frequency

below

which

the

bass

tone

con-

tro]

will

begin

to

act.

This

“turnover”

frequency

can

be

set

at

400Hz

or

200Hz,

to

match

the

characteristics

of

the

room,

the

program

material,

or

your

personal

listening

preferences.

TONE

SWITCH

In

the

OFF

(up)

position,

this

switch

causes

the

ampli-

fier

section

to

operate

with

a

flat

frequency

response

regardless

of

the

tone

control

setting.

TREBLE

TURNOVER

SWITCH-

This

switch

selects

the

frequency

above

which

the

treble

tone

control

will

begin

to

act,

This

“turnover”

frequency

can

be

set

at

2,5kHz

or

SkHz,

to

match

the

characteristics

of

the

room,

the

program

material,

or

your

personal

listening

preferences.

TREBLE

CONTROL

.W..

Clockwise

ro.

to

Bis

A

on

gives

stronger

emphasis

to

the

high

range

above

the

turnover

frequency

(selected

by

the

TREBLE

TURNOVER

switch),

while

counterclockwise

rotation

reduces

high-range

response,

eer

renee)

FM

TUNING

METER

tn

With

the

SIGNAL

meter

needle

deflected

to

the

right,

make

fine

adjustment

by

centering

the

FM

TUNING

meter

needie

(indicating

optimum

reception).

SIGNAL

METER----—~——~-

For

AM

and

FM

station

tuning.

AM

tuning:

Tune

for

maximum

deflection

SIGNAL

meter

needle

to

the

right.

Both

the

SIGNAL

and

FM

TUNING

meters

(see

FM

TUNING

METER)

SPEAKER

SYSTEM

INDICATOR

_FM

STEREO

INDICATOR

of

the

FM

tuning:

work

together

Mewes

y

=

LOW

CUT

FILTER

SWITCH.—_____--------

When

low-pitched

rumble

(from

turntable

motor

or

other

source)

is

obstrusive,

set

this

switch

to

the

30Hz

position

to

provide

6dB/octave

attenuation

at

frequencies

he

30Hz.

If

no

interference

is

experienced,

position.

set

in

the

ugg

HIGH

CUT

FILTER

SWITCH

When

high

frequency

scratch

noise

(from

worn

records

or

other

source)

is

unpleasant,

set

this

switch

to

the

6KHz

position

to

provide

6dB/octave

attenuation

at

frequencies

above

6kHz.

If

there

is

no

interference,

set,

in

the

up

position.

MPX

NOISE

FILTER

BUT

JON

Comparatively

high

frequency

noise,

incurred

when

fF

ceiving

weak

FM

siereo

signals,

can

be

eliminated

by

depressing

this

button

to

ON.

In

this

case

however,

thet

will

be

some

loss

of

stereo

separation.

TUNING

KNOB

po

FUNCTION

SELECTOR

BUTTONS

Select

the

station

and

tune

for

optimum

reception

by

:

To

select

the

program

source,

push

the

buttons

as

follows:

observing

the

SIGNAL

meter

for

AM

stations,

and

both

|

AM.

ne

ces

For

AM

broadcast

reception.

SIGNAL

and

TUNING

meters

for

FM

stations.

FEM

uge

ages

oes

For

FM

broadcast

reception.

The

STE-

|

Hl

i

j

i

i

iT

H

REO

indicator

lights

up

when

the

broad-

cast

isin

stereo.

-

PHONO

1...

.

To

operate

a

turntable

connected

to

the

PHONO

1

input

jacks.

PHONO

2/MIC.As

above

for

PHONO

2

jacks,

or

for

reproduction

through

a

microphone

con-

nected

to

the

MIC

jack

on

the

front

panel.

Note:

when

the

microphone

is

plugged

in

the

turntable

connected

to

the

PHONO

2

jacks

cannat

be

used.

AURA

rsa

igo

For

listening

to

an

audio

component

(car-

tridge

tape

player,

TV

sound

tuner,

etc.)

connected

to

the

AUX

input

jacks.

NOTE:

Only

one

FUNCTION

button

should

be

de-

pressed

at

a

time.

po

MIC

JACK

|

Accepts

a

standard

6

¢mm

microphone

plug.

po

AUDIO

MUTING

SWITCH

-

20dB

|

Set

to

—20dB

to

attenuate

the

audio

output

by

20dB.

This

convenient

feature

saves

having

to

disturb

the

VOLUME

control,

for

example

when

answering

the

telephone.

VOLUME

CONTROL

i

Governs

the

level

of

sound

outputs

both

from

the

speaker

systems

and

from

headphones.

|

“LOUDNESS

SWITCH

APE

MONITOR

(1,2)

SWITCHES

fea

tee

With

a

tape

deck

connected

to

the

TAPE

1

i

|

Set

to

ON

when

listening

at

low

volume.

The

frequency

jacks

(REC

and

PLAY),

either

playback

or

i

|

response

of

the

human

ear

varies

according

to

the

listening

monitoring

of

a

recording

in

progress

are

pos-

|

|

volume,

and

the

ON

position

compensates

for

hearing

)

sible

i

response

by

emphasizing

the

bass

and

treble.

.

-

i

De

ahs

Hsin

Same

as

in

1

above,

with

a

tape

deck

connected

H

“—-MODE

SWITCH

Set

to

STEREO

for

normal

stereo

operation.

When

set

to

MONO,

left

and

right

channe!

signals

will

be

mixed

and

reproduced

monophonically

from

both

speaker

systems.

to

the

TAPE

2

jacks

(REC

and

PLAY).

-TAPE

DUPLICATE

SWITCH

_

Set

this

switch

in

the

ON

(down)

position

to

duplicate

_

Or

edit

a

recorded

tape

using

two

tape

decks.

oe

BA

LANCE

CONTROL

Adjusts

the

balance

between

the

sound

volume

from

the

left

and

right

speaker

systems

or

headphones.

EM

MUTING

BUTTON

Leave

this

button

undepressed

(in

the

ON

position)

to

|

UPpress

unpleasant

interstation

noise

while

tuning

be-

ADAPTOR

SWITCH

‘Ween

stations.

Low-strength

signals

may

also

be

sup-

When

employing

adaptor

components,

such

as

a

graphic

Pressed

by

this

function,

so

to

pick

up

a

weak

station

equalizer

adaptor

or

Dolby

NR

adaptor,

set

this

ADAPT-

depress

this

button

to

the

OFF

position.

OR

switch

to

ON,

HOW

TO

OPERATE

THE

RECEIVER

PRIOR

TO

SWITCHING

POWER

ON

Before

switching

on

the

power,

set

the

various

con-

trols

as

follows:

Turn

the

MUTING

switch

OFF

(up)

Set

the

TREBLE

and

BASS

controls

to

the

midway

positions

(the

“0”

positions)

Turn

the

TAPE

MONITOR

and

ADAPTOR

switches

to

OFF

(up)

Set

the

VOLUME

control

to

MIN

(fully

anticlockwise)

Turn

the

MODE

switch

to

STEREO

(up)

Set

the

BALANCE

control

to

the

midway

position

FM

RECEPTION

Bs

2.

Depress

the

FM

selector

button.

Set

the

FM

MUTING

OFF

button

to

ON(un-

depressed).

Note,

however,

that

in

areas

of

low

signal

strength

the

signal

may

be

suppressed.

in

this

case

only,

the

FM

MUTING

OFF

should

be

depressed.

.

Select

the

station

by

means

of

the

TUNING

knob.

Best

reception

is

obtained

when

the

SIGNAL

meter

needle

deflects

to

the

extreme

right,

and

the

TUNING

meter

needle

is

exactly

in

the

center,

as

shown

in

Fig,

8, If

the

broadcast

is

stereophonic,

the

STEREO

indicator

lamp

will

come

on;

it

will

not

illumimate

for

monophonic

broadcasts.

.

Adjust

the

sound

level

by

means

of

the

VOL-

UME

control,

and

use

the

BASS

and

TREBLE

controls

to

give

the

required

tone

quality.

AM

RECEPTION

1.

Depress

the

AM

selector

button.

2.

Turn

the

TUNING

knob

to

select

your

station.

Best

reception

is

obtained

when

the

SIGNAL

meter

needie

deflects

to

the

extreme

right

(Fig.

9)

8.

Adjust

the

VOLUME,

BASS

and

TREBLE

con-

trols

for

the

listening

level

and

tone

quality

of

your

preference.

NOTE:

If,

when

listening

to

either

FM

or

AM

broadcasts,

listening

pleasure

is

seriously

affected

by

poor

sensitivity

or

strong

interference,

refer

to

the

section

“ANTENNA

AND

GROUND

CONNECTIONS,”

on

page

7

and

make

any

{

necessary

changes

ee

TUMNG

AM

Reception

Fig.

9