Sansui RA-700 Manuel utilisateur

OPERATING

INSTRUCTIONS

SOLID-STATE

REVERBERATION

AMPLIFIER

SANSUI

RA-700_

SANSUI

ELECTRIC

Co.,

LTD.

Congratulations

joining

the

thousands

proud,

satisfied

owners

quality

stereo

components

from

Sansui.

The

RA-700

reverberation

amplifier

unique

com-

ponent

add

new

thrilling

pleasure

your

stereo

enjoyment.

can

provide

reverberation

effects

all

the

program

sources

set

your

existing

stereo

control

amplifier,

including

the

playback

from,

record-

ing

tape

deck,

and

dubbing

between

two

tape

decks.

The

continuously

controllable

reverberation

time,

multicolored

reverberation

indicator

and

other

new

ideas

have

been

engineered

into

the

RA-700.

This

manual

has

been

prepared

guide

you

con-

necting

and

operating

the

reverberation

amplifier

cor-

rectly.

Please

read

carefully

before

operating

the

amplifier

and

retain

for

future

reference.

CONTENTS

SWITCHES

AND

CONTROLS.

...........cccecceeeeeeeee

CONNECTIONS

aicisseasssvesiventenccrunsesscnsesbaviebulerss

CONNECTIONS/OPERATION

.......

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HINTS

USE/ACCESSORIES...........

cess

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7,8

SPECIFICATIONS/BLOCK

DIAGRAM

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

SCHEMATIC

DIAGRAM.

.............cceessceeceseereees

SWITCHES

AND

CONTROLS

REVERBERATION

INDICATOR

The

reverberation

indicator

illuminated

when

the

Reverberation

Record

button

de.

pressed.

The

two

rainbows,

one

inverted,

draw

sharply

and

distinctly

apart

the

reverberation

time

shortened.

REVERBERATION

TIME

CONTROL

Use

this

control

adjust

the

reverberation

time

while

watching

the

reverberation

indicator.

lengthen

the

time,

turn

clockwise;

shorten

the

time,

turn

counterclockwise.

ERBERATION

AMPLIFIER

A-700.

POWER

SWITCH

Push

this

switch

once

turn

the

power

on;

push

again

turn

the

power

off.

POWER

INDICATOR

The

power

indicator

lit

when

the

Power

switch

turned

on.

remains

lit

while

the

amplifier

on.

REVERBERATION

PUSHBUTTONS

ON—Depress

this

button

add

reverberation

any

program

source.

If it

depressed

during

the

recording

process,

the

recording

made

without

reverberation

but

only

the

sound

from

the

speakers

reverberated.

OFF—Depress

this

button

you

want

not

add

reverberation

during

the

recording

process

while

listening

records,

radio

broadcasts

tapes.

RECORD—Depress

this

button

add

reverbera-

tion

the

sound

the

recording.

TAPE

MODE

SELECTOR

B—Use

this

position

record

on,

play

back

through,

the

tape

deck

connected

the

TAPE

DECK

jacks.

A—Use

this

position

record

on,

play

back

through,

the

tape

deck

connected

the

TAPE

DECK

jacks.

OFF—Use

this

position

provide

reverberation

effects

program

source

set

the

receiver

(or

control

amplifier)

connected

the

RA-700.

With

the

selector

switched

this

position,

the

reverberation

amplifier

disconnected

from

the

tape

deck

circuits.

B—Use

this

position

record

from

the

tape

deck

the

tape

deck

A—Use

this

position

record

from

the

tape

deck

the

tape

deck

CONNECTIONS

GROUNDING

TAPES

REC

PLAY

e000c

~goo00c

TAPE

DECK,

TURNTABLE,

ETC.

—

TUNER

AUR

WALL

OUTLET

REAR

PANEL

RECEIVER

(or

control

amplifier)

INPUTS

TAPE

DECK

OUTPUTS

INPUTS

TAPE

DECK

OUTPUTS

TAPE

DECK

TAPE

DECK

TAPE

DECK

—

CONNECTIONS

OPERATION

TAPE

DECK

TAPE

DECK

PLAYBACK

PLAY

BACK

RECORDING

TURNTABLE

RECEIVER

CONTROL

AMPLIFIER

RA-700

OUTPUTS

RA-700

INPUTS

WALL

OUTLET

REVERBERATION

AMP,

CONNECTION

RECEIVER

CONTROL

AMPLIFIER

RA-700

RECEIVER

REVERBERTION

AMP

CONTROL

AMP

TAPE

(REC)

Outputs

[

LEFT

RIGHT

SPEAKER

SYSTEMS

LEFT

RIGHT

TAPE

(PLAY

MON)

Inputs

LEFT

RIGHT

[

LEFT

CONNECTION

TAPE

DECK

RA-700

TAPE

DECK

Recording:

Inputs

RIGHT

LEFT

RIGHT

©)

RIGHT

Reverberate

Sound

From

Any

Pro-

gram

Source—Record

Player,

Tuner

Microphone—Except

Tape

Deck

Set

the

Tape

Monitor

switch

the

receiver

(or

control

amplifier)

its

PLAYBACK

position.

Turn

the

Tape

Mode

selector

the

RA-

700

its

OFF

position.

Depress

the

Reverberation

button.

Adjust

the

Reverberation

Time

control

‘he

desired

reverberation.

Reverberate

Sound

From

Through

the

Tape

Deck

Playback

Set

the

Tape

Monitor

switch

the

receiver

(or

control

amplifier)

its

PLAYBACK

position.

Turn

the

Tape

Mode

selector

the

RA-

700

depending

which

jacks

are

being

used

for

playback.

Depress

the

Reverberation

button.

Operate

the

tape

deck

the

playback

mode.

Adjust

the

Reverberation

Time

control

the

desired

reverberation.

Recording

Set the

Tape

Monitor

switch

the

receiver

(or

control

amplifier)

its

PLAYBACK

position.

Turn

the

Tape

Mode

selector

the

RA-

700

depending

which

jacks

are

being

used

for

recording.

Depress

the

Reverberation

Record

button.

Operate

the

tape

deck

the

recording

mode.

’

Adjust

the

Reverberation

Time

control

the

desired

reverberation.

Notes:

the

Reverberation

button

depressed

during

the

recording

process,

the

original

pro-

gram

can

recorded

without

reverberation

SS,

while

the

reverberated

sound

comes

from

the

speakers.

the

Reverberation

Off

button

depressed

during

the

recording

process,

reverberation

added

the

sound

the

recording

nor

the

sound

from

the

speakers.

Dubbing

Set the

Tape

Monitor

switch

the

receiver

(or

control

amplifier)

its

PLAYBACK

position.

When

recording

from

the

tape

deck

the

tape

deck

turn

the

Tape

Mode

selector

APB;

when

recording

from

the

turn

the

selector

BRA.

Depress

the

Reverberation

Record

button.

Operate

one

tape

deck

the

playback

mode

and

another

the

recording

mode.

Adjust

the

Reverberation

Time

control

the

desired

reverberation.

Note:

you

want

not

add

reverberation

during

the

dubbing

process,

depress

the

Rever-

beration

Off

button.

the

Reverberation

button

depressed

during

the

dubbing

process,

the

original

tape

can

recorded

without

re-

verberation

while

the

reverberated

sound

comes

from

the

speakers.

Monitoring

your

tape

deck

has

its

own

preamplifier

well

separate

recording

and

playback

heads,

you

can

monitor

the

tape

instantly

after

the

recording

made

and

while

the

recording

still

progress.

For

use

with

two-head

tape

recorder

which

can

pick

signal

before

the

recording

made,

you

can

listen

well.

two-head

tape

recorder

which

does

not

employ

this

arrangement

used

for

recording,

not

playback,

the

Tape

Monitor

switch

the

control

amplifier

(or

receiver)

should

set

its

SOURCE

OFF

position,

otherwise

sound

comes

from

the

speakers.

HINTS

USE

ACCESSORIES

Connections

sure

use

shielded

cable

(four

connecting

cords

supplied)

connect

control

amplifier

and

tape

decks

the

RA-700.

The

use

ordinary

twin

leadwire

may

cause

hum

noise.

Always

check

see

the

connecting

cords

are

plugged

firmly

and

properly

into

their

corresponding

output

input

jacks.

the

connections

are

loose

touch

with

other

parts,

the

RA-700

will

not

perform

normally,

and

may

produce

undesirable

noise.

used

such

way

for

long

time,

will

eventually

break

down.

A.C,

Outlets

The

two

a.c.

outlets

the

rear

panel

are

live

all

times

and

for

plugging

pair

tape

decks.

The

voltage

delivered

these

out-

lets

the

same

the

power

supply

voltage

used.

They

have

maximum

capacity

300

total.

Never

use

them

beyond

their

rated

capacity.

UNSWITCHED

TOTAL

300VA

MAXIMUM

Power

Fuse

the

unit

remains

completely

dead

when

the

power

switched

(the

POWER

indicator

fails

light),

the

power

fuse

probably

blown.

this

case,

remove

the

line

cord

from

its

a.c.

outlet

and

replace

the

fuse

after

finding

and

eliminating

the

trouble

that

caused

the

fuse

blow.

Use

only

identical

glass-tubed

fuse.

For

100-117

volt

operation,

0.5

ampere

fur

—

required.

For

220-240

volt

operation,

0.3

ampere

fuse

should

used.

Never

attemp’

use

piece

wire

fuse

defferent

capacity

substitute.

elev

amore)

rrleyyy

Tomemcy

Replace

with

some

type

fuse

Grounding

Connect

one

end

vinyl

enameled

wire

the

terminal

screw

marked

GND

the

rear

the

amplifier,

attach

copper

plate

the

other

end and

bury

underground.

all

cases,

grounding

desirable

since

allows

better

ratio

obtained.

ground

entire

audio

system,

connect

the

grounding

wire

each

component

this

terminal.

COPPER

PLATE

BURIED

UNDERGROUND.

ee!

Voltage

Adjustment

ACCESSORIES

reach

the

voltage

selector,

remove

the

two

OPERATING

INSTRUCTIONS..........

screws

from

the

nameplate

the

rear

panel

OPERATING

SHEET..........-++-.+--

and

then

remove

the

nameplate.

The

voltage

SeGNNE

STING

Coane

Wal

i i

aelecton

aces

Dosiule

/eperate

ine

PIN-PUGSS

nfsc2-

ate

atuenceer

eats

700

the

correct

volt

any

area.

The

volt

has

been

pre-adjusted

the

factory,

but

can

Operating

Instructions

Stock

No.

9208670

easily

readjusted

follows:

Set

the

arrow

the

voltage

selector

plug

the

required

volt:

100,

117,

220

240

volts.

The

power

fuse

should

also

changed

whenever

the

a.c.

line

voltage

changed.

For

100-117

volt

operation,

0.5

ampere

fuse

required.

For

220-240

volt

operation,

the

fuse

should

changed

0.3

ampere

fuse.

Note:

The

voltage

selector

can

also

used

eliminate

the

trouble

caused

the

consider-

able

voltaege

fluctuation.

this

case,

should

set

the

peak

voltage.

Placement.

Your

RA-700

may

placed

any

position

where

convenient

reach.

But

recom-

mend

place

away

from

the

speakers

be-

cause

unnatural

reverberation

booming

noise

may

caused.

SPECIFICATIONS

“BLOCK

DIAGRAM

SPECIFICATIONS

RATED

OUTPUT

VOLTAGE:

300mY

(at

1,000Hz,

Reverberation

time

minimum

input

level

200m)

MAXIMUM

INPUT

VOLTAGE:

(at

1,000Hz,

Reverberation

time

minimum)

HARMONIC

DISTORTION:

Less

than

0.2%

(at

1,000Hz,

Reverberation

time

minimum

output

level

300mV)

FREQUENCY

RESPONSE:

30,000Hz

+2dB

(st

Reverberation

time

minimum)

30,000Hz

+10dB

(at

Reverberation

time

maximum)

SIGNAL

NOISE

RATIO:

65dB

(at

output

level

300mV)

REVERBERATION

TIME:

1.9

3.2

second

(at

1,000Hz)

INPUT

IMPEDANCE:

than

200k

ohms

(at

1,000Hz)

INPUT

AND

OUTPUT

JACKS:

INPUT

OUTPUT

TAPE

DECK—A

TAPE

DECK—B

BLOCK

DIAGRAM

LOAD

IMPEDANCE:

100k

ohms

SWITCHES

AND

CONTROLS:

REVERBERATION

MODE:

ON,

OFF,

RECORD

TAPE

MODE:

REC/PLAY—B

REC/PLAY—A

A—B

DUBBING

8—A

DUBBING

POWER

REQUIREMENT:

POWER

VOLTAGE:

100,

117,

220,

240V

50/60Hz

POWER

CONSUMPTION:

(rated)

SEMI-CONDUCTORS:

Transistors:

Diodes:

DIMENSIONS:

1114/1

6”(280mm)

4157)

6”(125mm)

107/16%(264mm)

9.3

Ibs

(4.2kg)

Net

11.9

Ibs

(5.4kg)

Packed

WEIGHT:

*Design

and

specifications

subject

change

without

notice

for

improvements.

“BUFFER

AMP

LEFT

TRSO1

TREO3

__[F=12

LOW

FREQUENCY

AMP

REV

AMP

INPUT@——oe@-

Hk)

TAPE

PLAYBACKG

AUDIO

DRIVER

AMP

AYBACKG-——O

TAPE

PL:

TRs09

Rso7

TR508

REV

AMP

OUTPUT

TAPE

RECORDING

TAPE

RECORDING

TAPE

MODE

os,

RIGHT

REV

AMP

INPUT

Joa

TAPE

FENARE

TAPE

PLAYBACKG@—o

REV

AMP

OUTPUT

TAPE

RECORDING

TAPE

RECORDING

TRSO4

TRSOz

POWER

CIRCUIT

REVERBERATION

UNIT

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