Rotel Ra-870bx User manual

STEREO

INTEGRATED

AMPLIFIER

RA-870BX

owners,

manual

ENGLISH

....*..

2

DEUTSCH......7

FRANpAIS.....

12

0^H.*.......

17

WARNING

TO

PREVENT

FIRE

OR

SHOCK

HAZARD,

DO

NOT

EXPOSE

THIS

APPLIANCE

TO

RAIN

OR

MOISTURE

Write

your

SERIAL

NUMBER

here,

—---

-

The

number

is

located

near

the

name

plate

on

the

rear

panel.

I

SAFETY

INSTRUCTIONS

CAUTION

RISK

OF

ELECTRIC

SHOCK

DO

NOT

OPEN

CAUTION:

TO

REDUCE

THE

RISK

OF

ELECTRIC

SHOCK,

DO

NOT

REMOVE

COVER

(OR

BACK).

NO

USER-SERVICEABLE

PARTS

INSIDE.

REFER

SERVICING

TO

QUALIFIED

SERVICE

PERSONNEL.

•

Explanation

of

Graphical

Symbols

/f\

The

lightning

flash

with

arrowhead

symbol,

within

an

/

W

\

equilateral

triangle,

is

intended

to

alert

you

to

the

/

\

presence

of

uninsulated

"dangerous

voltage"

within

the

/

§

\

product's

enclosure

that

may

be

of

sufficient

magnitude

/

X

\

to

constitute

a

risk

of

electric

shock

to

persons

A

The

exclamation

point

within

an

equilateral

triangle

is

intended

to

alert

you

to

the

presence

of

important

operating

and

maintenance

(servicing)

instructions

in

the

literature

accompanying

the

appliance

EXCLUSIVE

NOTE

FOR

U.K.

If

your

unit

comes

with

a

2-core

cable

without

a

plug,

make

certain

live

and

neutral

leads

are

connected

to

the

proper

terminals

Check

that

the

terminals

are

screwed

down

firmly

and

no

loose

strands

of

wire

are

present.

IMPORTANT:

The

wires

in

this

mains

lead

are

coloured

in

accordance

with

the

following

code:

BLUE:

NEUTRAL

BROWN:

LIVE

As

the

colours

of

the

wires

in

the

mains

lead

of

this

ap¬

paratus

may

not

correspond

with

the

coloured

markings

identifying

the

terminals

in

your

plug

proceed

as

follows.

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

connected

to

the

terminal

which

is

marked

with

th£

letter

L

or

colour

BROWN

or

RED.

1.

Read

Instructions—

All

the

safety

and

operating

instruc¬

tions

should

be

read

before

the

appliance

is

operated

2.

Retain

Instructions

—

The

safety

and

operating

instruc¬

tions

should

be

retained

for

future

reference

3.

Head

Warnings

—

All

warnings

on

the

appliance

and

in

the

operating

instructions

should

be

adhered

to

4.

Follow

Instructions

—

All

operating

and

other

instructions

should

be

followed.

5.

Water

and

Moisture

—

The

appliance

should

not

be

used

near

water

—

for

example,

near

a

bathtub,

washbowl,

kitchen

sink,

laundry

tub.

in

a

wet

basement,

or

near

a

1

swimming

pool.

etc.

6.

Carts

and

Stands

—

The

appliance

should

be

used

only

with

a

cart

or

stand

that

is

recommended

by

the

manufacturer

7.

Wall

or

Ceiling

Mounting

—

The

appliance

should

be

mounted

to

a

wall

or

ceiling

only

as

recommended

by

the

manufacturer

8.

Ventilation

—

The

appliance

should

be

situated

so

that

its

location

or

position

does

not

interfere

with

its

proper

ventilation.

For

example,

the

appliance

should

not

be

situated

on

a

bed,

sofa,

rug,

or

similar

surface

that

may

block

the

ventilation

openings;

or

placed

in

a

built-in

in¬

stallation,

such

as

a

bookcase

or

cabinet

that

may

im¬

pede

the

flow

of

air

through

the

ventilation

openings

9.

Heat

—

The

appliance

should

be

situated

away

from

heat

sources

such

as

radiators,

stoves,

or

other

appliances

that

produce

heat.

10.

Power

Sources

—

The

appliance

should

be

connected

to

a

power

supply

only

of

the

type

described

in

the

oper¬

ating

instructions

or

as

marked

on

the

appliance.

11.

Power-Cord

Protection

—

Power-supply

cords

should

be

routed

so

that

they

are

not

likely

to

be

walked

on

or

pinched

by

items

placed

upon

or

against

them,

paying

particular

attention

to

cords

at

plugs,

convenience

recep¬

tacles,

and

the

point

where

they

exit

from

the

appliance.

12.

Cleaning

—

The

appliance

should

be

cleaned

only

as

recommended

by

the

manufacturer.

13.

Nonuse

Periods

—

The

power

cord

of

the

appliance

should

be

unplugged

from

the

outlet

when

left

unused

for

a

long

period

of

time

14.

Object

and

Liquid

Entry

—

Care

should

be

taken

so

that

objects

do

not

fall

into

and

liquids

not

spilled

into

the

in¬

side

of

the

appliance.

15.

Damage

Requiring

Service

—

The

appliance

should

be

serviced

by

qualified

service

personnel

when:

A

The

power-supply

cord

or

the

plug

has

been

damaged;

or

B

Objects

have

fallen,

or

liquid

has

been

spilled

into

the

appliance;

or

C

The

appliance

has

been

exposed

to

rain;

or

D

The

appliance

does

not

appear

to

operate

normally

or

exhibits

a

marked

change

in

performance;

or

E

The

appliance

has

been

dropped,

or

the

cabinet

damaged.

16.

Servicing

—

The

user

should

not

attempt

to

service

the

appliance

beyond

those

means

described

in

the

oper¬

ating

instructions.

All

other

servicing

should

be

referred

to

qualified

service

personnel

17.

Grounding

or

Polarization

—

The

precautions

that

should

be

taken

so

that

the

grounding

or

polarization

means

of

an

appliance

is

not

defeated

STEREO

INTEGRATED

AMPLIFIER

RA-

870

B

X

INTRODUCTION

We

at

Rotet

want

lo

thank

you

for

purchasing

our

audio

product.

Rote!

audio

products

are

designed

to

use

the

latest

electronic

technology,

and

they

incorporate

our

tong

experience

as

a

specialist

manufacturer

of

audio

equipment

We

are

confident

lhat

you

will

find

satisfaction

in

the

high

quality

sound

and

top

performance,

and

that

you

will

find

pleasure

in

the

func¬

tional

beauty

achieved

through

human-engineering

concept,

Before

starling

operation,

please

read

this

instruction

manual

thoroughly

and

acquaint

yourself

with

the

proper

mode

of

us¬

ing

the

unit

and

all

its

connections

We

hope

you

will

enjoy

top-notch

performance

for

many

years

to

come

BEFORE

ENJOYMENT/POWER

SUPPLY

Follow

the

instructions

below

tor

maximum

safety:

1,

Use

a

wall

outlet

for

power

supply

Be

sure

to

connect

the

AC

line

cord

to

a

house-hold

wall

out¬

let.

Be

certain

that

the

outlet

voltage

matches

the

electrical

rating

of

the

unit,

found

on

ihe

rear

panel

name

plate.

2,

Connecting

and

removing

AC

cord

Be

sure

to

connect

or

disconnect

the

AC

line

cord

only

after

turning

off

the

power

switch

to

prevent

possible

shock

noise

or

damage

to

the

speakers

3,

Ventilate

the

unit

well

Never

block

any

ventilation

holes

at

the

top

and

bottom

of

the

unit

Be

sure

also

to

provide

ample

ventilation

space

around

the

unit

Poor

ventilation

may

result

in

damage

due

to

exces¬

sive

heat

4,

Do

not

open

the

cabinet

In

order

to

avoid

electric

shock

or

damage

to

the

component,

never

open

the

cabinet.

II

a

foreign

object

falls

inside

the

unit

by

mistake,

turn

the

power

off,

disconnect

the

wall

plug,

and

consult

a

qualified

electrician

or

your

dealer

5,

Installation

Be

sure

to

place

the

unit

in

a

level

and

flat

place

where

it

is

free

from

humidity,

vibration,

high

temperature

and

not

ex¬

posed

to

direct

sunhght

8e

careful

not

lo

ptace

the

unit

in

a

highly

enclosed

place

such

as

near

a

wall

or

on

a

bookshelf

A

poor

ventilation

will

cause

undesirable

effects

to

tbe

unit

6,

Moving

the

unit

When

transporting,

remove

the

AC

cord

from

the

wall

outlet

and

all

other

connected

cords

on

the

rear

panel

10

prevent

wire

breakage

and

short

circuiis

7,

tf

the

unit

gets

wet

If

the

unit

should

get

wet,

immediately

disconnect

the

AC

cord

and

consult

your

dealer

or

a

qualified

electrician.

8,

Cleaning

and

maintenance

Do

not

use

chemicals

such

as

benzine

or

thinners

on

the

front

panel

Always

use

a

soft,

dry

cloih

to

clean

the

unit

9,

Owner's

manual

Keep

Ihe

owner

s

manual

near

the

unit,

and

record

the

serial

number

(found

on

the

rear

panel)

on

the

cover.

NOTES

ON

THE

SPEAKER

SYSTEM

Special

regard

has

been

paid

Io

lone

quality

in

Ihe

circuit

de¬

sign

of

this

unit

To

make

the

most

of

this

circuil

design,

we

recommend

that

you

use

the

DIRECT

SPEAKERS

terminals

for

Ihe

speaker

connection

With

I

his

connection

Ihe

output

signals

bypass

the

headphone

ctrcuil.

speaker

remote

switch,

etc

,

thereby

minimizing

ihe

deterioration

ol

the

tone

quality.

If

you

often

enpy

listening

through

headphones,

however,

use

the

REMOTE

SPEAKERS

terminals

for

the

speaker

connec¬

tion

instead,

In

this

case,

you

can

cut

off

the

sound

of

the

REMOTE

speakers

with

the

SPEAKER

REMOTE

switch

on

the

front

panel

when

you

wish

to

listen

through

the

head¬

phones

only.

When

2

pairs

of

speakers

are

connected,

one

lo

the

DIRECT

and

the

other

to

the

REMOTE

SPEAKERS

terminals,

sound

can

be

heard

from

all

the

speakers.

However,

only

the

sound

from

the

REMOTE

speakers

can

be

cut

off

with

the

SPEAKER

REMOTE

switch,

Connect

speakers

with

an

impedance

of

4-16

ohms.

If

you

connect

2

pairs

of

speakers,

use

speakers

of

0-16

ohms,

(The

speaker

impedance

is

indicated

on

the

speaker's

inscription

plate

or

in

the

instruction

manual

of

the

speaker

system.)

NOTES

ON

SPEAKER

CONNECTIONS

Connect

the

speaker

cord

of

the

right

speaker

to

the

RIGHT

terminals

and

the

cord

of

the

left

speaker

to

the

LEFT

termi¬

nals

of

DIRECT/REMOTE

SPEAKERS

terminals

on

the

rear

panel

of

this

unit.

Also

note

the

+

/-

connections

(

+

lead

to

+

terminal

and

-

lead

to

-

terminal).

The

speaker

terminals

of

this

unit

are

the

screw

type

Strip

the

speaker

cord

insulation

and

insert

the

twisted

end

into

the

terminal

after

turning

the

screw

counterclockwise

to

ioosen

Then

lighten

the

screw

firmly

by

turning

clockwise

so

that

the

speaker

cord

cannot

be

pulled

out

accidentally.

SPEAKER

CONNECTIONS

SPEAKER

(R)

SPEAKER

(L)

REMOTE

SPEAKER

(Rj

REMOTE

SPEAKER

(LJ

CONNECTING

COMPONENTS

Connect

all

necessary

audio/visual

components

to

the

rear

panel

of

the

unit,

using

RCA

pin

cords

See

the

illustration

for

properly

completed

connections

When

connecting

RCA

pin

cords,

be

sure

lhat

L

(left)

and

R

(right)

markings

on

each

component

are

matched

correctly

Connect

the

grounding

wire

of

the

turntable

to

the

terminal

marked

GND

on

Ihe

amplifier

PHONO

MM/MC

Selector

The

unit

has

a

buill-pn

MC

head

amplifier

This

selector

is

used

to

receive

MM

(moving

magnet)

or

MC

(moving

coil)

phono

cartridge

signal

with

an

appropriate

gam

In

MC

position,

the

built-in

MC

head

amplifier

is

activated

When

your

turntable

uses

an

MC

cartridge,

set

the

selector

to

MC

position

When

MM

cartridge

is

used,

set

the

selector

to

MM

position

PRE

AMP

OUT

and

MAIN

AMP

IN

Receptacles

There

are

pairs

of

terminals

marked

PRE

AMP

OUT

and

MAIN

AMP

IN.

connected

with

a

pair

of

jumper

pins

on

the

rear

chassis

Normally

with

the

pins

in

place,

your

receiver

is

the

combined

equipment

of

integrated

preamplifier

and

mam*

amplifier

sections.

However,

by

removing

the

jumper

pins.

your

unit,

in

essence,

becomes

two

independent

components

consisting

of

one

pre-amplifier

and

one

main-amplifier

These

receptacles

are

intended

for

use

with

any

necessary

equipment

designed

to

be

installed

between

the

preamplifi¬

er

and

the

main-amplifier

or

for

separate

use

of

either

sec¬

tion

alone

Such

equipment

as

electronic

audio

equalizer

or

reverberation

unit

can

be

used;

or

another

pre-amplifier

or

main-amplifier

may

be

hooked

up

Simply

disconnect

the

jum¬

per

pins

and

follow

the

instructions

supplied

with

the

acces¬

sory

equipment

When

no

auxiliary

equipment

is

being

used,

the

jumper

pins

MUST

be

installed

in

place

in

order

to

use

your

amplifier

Videodisc

Player.

VCR

etc

PHONO

MM/MC

SELECTOR

PRE

AMP

OUT

AND

MAIN

AMP

IN

RECEPTACLES

PINS

Audio

Signal

Path

(R)

Audio

Signal

Path

(L)

B

Video

Signal

Path

Monitor

TV

CD

Player

SWITCHES

AND

CONTROLS

(1)

Power

Button

Depress

Ihis

bulton

to

turn

on

the

power

in

the

unit.

Press

the

bulton

a

second

time

to

release

it

and

lo

cut

off

the

power

(2)

Power

Indicator

Glows

when

power

is

turned

on

with

the

power

button

(3)

Speaker

Remote

Button

Press

the

bulton

to

actuate

the

speaker

system

connected

to

REMOTE

speaker

terminals

on

the

rear

panel

Release

the

button

OFF

to

cut

off

sound

from

remote

speakers.

(4)

Protection

Indicator

The

indicator

normally

lights

for

several

seconds

upon

turn¬

ing

on

the

power

When

the

indicator

goes

off,

it

means

the

unit

is

in

ihe

normal

operating

state.

The

indicator

glows

when

abnormally

high

temperature

is

built

up

inside

the

unit

In

such

a

case,

ihe

indicator

will

remain

on

until

the

temperature

inside

the

unit

drops

to

a

normal

level

When

the

indicator

goes

off,

it

indicates

the

unit

has

returned

to

ihe

normal

operating

state

(5)

Headphones

Jack

Connect

headphones

to

listen

through

Ihe

headphones

When

the

SPEAKER

REMOTE

button

is

at

OFF.

the

sound

from

the

speakers

connected

to

the

REMOTE

SPEAKERS

ter¬

minals

is

cut

off

and

you

can

adjust

ihe

headphone

volume

with

the

VOLUME

control

If

a

speaker

system

is

connected

to

the

DIRECT

SPEAKERS

terminals,

however,

the

sound

from

those

speakers

cannot

be

cut

off.

so

listening

through

the

headphones

only

is

im¬

possible

To

listen

through

Ihe

headphones

alone,

do

not

connect

any

speakers

to

the

DIRECT

SPEAKERS

terminals.

(6)

Tone

Controls

Two

separate

tone

controls

regulate

bass

and

treble

respec¬

tively

knob

labeled

BASS

is

for

low

frequency

range

and

TREBLE

tor

high

frequency

range

Rotate

the

knob

clockwise

to

boost

the

response,

and

coun¬

terclockwise

to

cul

it

(7)

Tone

Selector

With

the

selector

al

OFF,

Ihe

signals

do

not

pass

through

the

tone

control

circuit

(in

order

to

prevent

deterioration

of

the

tone

quality)

Therefore

the

tone

controls

do

not

function,

but

this

unit

provides

superior

tone

quality

If

the

listening

room

acous¬

tics

are

extremely

lively

or

dead

and

no

adjustment

is

possi*

ble

by

rearranging

the

furnitures

or

Ihe

speakers,

set

this

selector

to

ON

You

can

then

adjust

the

tone

with

the

tone

controls

At

the

MONO

position,

all

the

signals

are

output

in

mono,

and

the

tone

controls

are

active

(8)

Volume

Control

Used

to

regulate

ihe

volume

level

Turn

clockwise

to

increase

the

volume,

and

counterclockwise

to

reduce

if

This

is

a

dual

concentric

knob

which

permits

either

separate

or

combined

adjustment

of

both

channels

(9)

CD

Direct

Switch

and

Level

Control

With

the

switch

at

ON.

the

signals

from

the

CD

player

are

sent

to

the

power

amplifier

section

directly

to

be

amplified

and

out¬

put

In

this

case,

no

control

functions

of

this

unit

activate

and

you

can

enjoy

the

excellent

sound

quality

of

the

compact

disc

without

any

deterioration

The

volume

of

the

CD

sound

can

be

adjusted

by

using

the

input

LEVEL

control

Normally

set

the

switch

to

OFF

The

signals

from

the

CD

player

pass

through

the

control

amplifier

section,

and

the

volume

control

and

lone

control

functions

activate.

The

LEVEL

control

does

not

function

with

this

switch

at

the

OFF

position

(10)

Tape

Monitor

Selector

Used

to

listen

to

a

signal

supplied

from

ihe

tape

deck.

Set

the

selector

to

TAPE

1

position

tor

the

signal

from

a

tape

deck

connected

to

TAPE

1

terminals

on

the

rear

panel,

and

set

to

TAPE

2

for

the

deck

connected

to

TAPE

2

terminals

When

it

is

set

to

the

il

1

►

2

"

position,

you

can

perform

tape-

to-tape

copying

from

the

TAPE

1

to

the

TAPE

2

deck.

Like*

wise,

the

ll

2

^

1

M

position

permits

copying

from

the

TAPE

2

to

the

TAPE

t

deck

Be

sure

to

set

this

selector

lo

SOURCE

when

listening

to

a

source

selected

by

the

Input

selector.

(11)

Function

Selector

Select

ihe

program

source

to

play

or

record.

PHONO:

Turntable

connected

to

the

PHONO

terminals.

CD

CD

player

connected

to

the

CD

terminals

TUNER:

Tuner

connected

to

the

TUNER

terminals.

AV/AUX

1,

AV/AUX

2:

Video

cassette

recorder

or

video

disc

recorder

connected

to

the

AV/AUX

1

or

AV/AUX

2

terminals

Use

this

selector

with

the

Tape

Monitor

selector

al

the

SOURCE

position

OPERATION

*

Before

commencing

operation,

check

to

see

if

all

con¬

nections

are

properly

made

*

Always

be

sure

to

set

the

volume

control

to

the

minimum

position

before

turning

on

power

*

When

listening

to

a

compact

disc

with

the

CD

DIRECT

switch

at

the

ON

position,

be

sure

to

turn

the

LEVEL

control

completely

lo

the

left

before

turning

the

power

switch

to

ON

Listening

From

turntable

1

S

ei

Tape

Monitor

selector

to

SOURCE

2

Select

PHONO

on

the

function

selector

3

Start

playing

turntable,

and

raise

the

volume

to

the

desired

level

Playing

a

compact

disc

•

Playing

in

the

direct

signal

path

mode

t

Set

the

Tape

Monitor

selector

to

SOURCE

2

Select

CD

on

the

function

selector

3

Set

the

CD

DIRECT

switch

lo

ON

4

Start

pfaymg

the

compact

disc

and

adjust

the

volume

with

Ihe

LEVEL

control

4

•

Playing

in

the

normal

signal

path

mode

1

Set

the

Tape

Monitor

selector

to

SOURCE

2

Select

CD

on

the

function

selector

3

Set

the

CD

DIRECT

switch

to

OFF

4

Start

playing

the

compact

disc

and

raise

the

volume

to

the

desired

level

with

the

VOLUME

control

Radio

broadcast

reception

1.

Set

the

Tape

Monitor

selector

to

SOURCE

2

Select

TUNER

on

the

function

selector

3

Tune

in

the

desired

station

on

the

tuner

and

raise

the

volume

to

the

desired

level

Playing

back

tape

deck

1

Set

Tape

Monitor

selector

to

TAPE

1

or

TAPE

2

posi¬

tion

according

to

the

tape

deck

you

are

going

to

play

back

2

Start

playback

3.

Raise

the

volume

to

the

desired

level

Recording

program

source

Play

the

desired

program

source

according

to

the

procedures

mentioned

above

The

signal

from

the

source

will

be

sent

through

TAPE

MONITOR

OUT

terminals

on

unit’s

rear

panel

Put

the

tape

deck

in

the

record

mode

to

record

the

signal

During

recording,

operation

of

Volume

control,

and

Tone

con¬

trol

will

have

no

effect

on

the

signal

being

sent

through

TAPE

MONITOR

OUT

terminals.

Note:

When

playing

a

compact

disc

in

the

direct

signal

path

mode,

the

signal

will

not

be

sent

to

TAPE

MONITOR

OUT

terminals

but

only

to

the

speaker

terminals,

and

so

cannot

be

recorded.

Dubbing

By

connecting

two

tape

decks,

dubbing

(tape-to-tape

copy¬

ing)

of

prerecorded

tapes

can

be

performed

The

unit

allows

two

modes

of

dubbing

from

TAPE

1

to

TAPE

2

deck,

and

TAPE

2

to

TAPE

1

deck

1

Set

Tape

Monitor

selector

to

“1

>2

“

or

"

2

>

1”.

2

Play

back

TAPE

1

(or

TAPE

2)

deck,

and

put

TAPE

2

(or

TAPE

1)

deck

in

record

mode,

then

dubbing

starts

Dur¬

ing

this

operation,

you

can

listen

to

the

signal

with

Volume

control

or

Tone

control

set

as

desired;

they

have

no

effect

on

the

signal

to

be

recorded

PLAYBACK

AND

RECORDING

WITH

AV

EQUIPMENT

The

RA-870BX

permits

connection

and

switching

of

audio¬

visual

components,

so

that

the

receiver

can

be

used

as

an

AV

control

center

There

are

one

set

of

inputs

for

a

stereo

AV

component

such

as

a

video

disc

player

and

one

set

of

inputs/outputs

for

a

stereo

video

recorder

There

is

also

a

separate

TV

monitor

output

for

connection

of

a

color

monitor

for

high

quality

viewing

This

system

then

not

only

provides

for

easy

selection

of

video

sources,

but

also

allows

high

performance

operation

for

op¬

timal

sound

quality

such

as

digital

sound

from

a

Hi-Fi

video

recorder

In

addition,

sound

track

of

video

components

can

be

dubbed

onto

a

tape

recorder

connected

to

the

receiver,

or

vice

ver¬

sa

Video

dubbing

is

also

possible

from

AV/AUX

1

to

AV/AUX

2

Playback

To

carry

out

playback

with

the

equipment

connected

to

the

AV/AUX

inputs,

set

the

function

selector

to

AV/AUX

1

or

AV/AUX

2

as

required

and

set

the

tape

monitor

selector

to

SOURCE

position

Set

the

TV

or

video

monitor

to

the

video

input

mode

to

view

the

picture

Adjust

the

volume

and

other

controls

on

the

receiver

to

suit

your

needs

Recording

(Dubbing)

Set

the

tape

monitor

selector

to

SOURCE

position

and

func¬

tion

selector

to

AV/AUX

1.

where

the

source

to

be

recorded

is

connected

Then

record

with

the

video

recorder

connected

to

the

AV/AUX

2

terminals

on

the

rear

panel

The

video

signal

being

recorded

can

be

monitored

by

the

connected

TV

or

video

monitor

For

advanced

applications,

such

as

combining

sound

from

an

audio

source

with

a

video

signal

and

recording

both

on

the

video

cassette

recorder

connected

to

the

AV/AUX

2

ter¬

minals.

please

refer

to

the

signal

flow

table

shown

on

page

21

(Note

the

audio

and

video

signal

supplied

to

the

video

record¬

er

is

completely

unaffected

by

the

volume,

balance

and

tone

settings

of

the

receiver).

HUM

AND

NOISE

In

any

high

fidelity

installation,

hum

may

be

caused

by

the

interconnection

of

a

turntable,

tuner

and

amplifier,

and

speak¬

ers

as

the

result

of

wiring,

different

grounding

or

locations

of

components

If

hum

is

experienced

with

your

unit,

disconnect

everything

but

the

speakers

from

the

unit.

Plug

in

the

turntable

and

if

hum

or

howling

appears,

move

the

turntable

away

from

the

speakers

as

much

as

possible

Note

hum

may

also

be

induced

by

defective

cable

connec¬

tions

or

by

running

the

cables

too

close

to

strong

AC

field

When

your

unit

picks

up

noise

during

the

reception

of

broad¬

casts,

causes

are

mostly

due

to

external

objects

such

as

fluorescent

lamps

and

house

appliances

using

motor

or

ther¬

mostat,

or

others

that

may

induce

the

noise

Either

relocating

the

unit

away

from

the

noise

sources

or

using

an

improved

outdoor

antenna

may

readily

solve

the

problem

In

the

event

you

cannot

find

the

cause,

consult

your

dealer

or

a

qualified

electrician

PROTECTION

CIRCUIT

The

RA-870BX

incorporates

thermal

protector

to

prevent

accident

or

damage

If

for

some

reason

the

protection

cir¬

cuit

is

activated,

there

will

be

a

sudden

cut-off

of

sound

from

the

speakers,

and

the

protection

indicator

will

light

up

If

no

sound

is

produced,

the

reason

may

be

due

to

the

func¬

tioning

of

the

protection

circuit.

First,

turn

off

the

power

and

disconnect

the

plug

from

the

electrical

outlet

Then

locate

and

remedy

the

cause

of

the

trouble

When

the

thermal

pro¬

tector

is

activated,

the

unit

will

start

functioning

automatical¬

ly

after

the

temperature

is

lowered

again.

If

the

protection

circuit

is

activated

again

despite

taking

the

above

action,

cut

off

the

power

supply

from

your

entire

audio

system

and

consult

your

dealer

or

a

qualified

electrician.

Note:

The

protection

circuit

will

normally

operate

to

prevent

a

popping

noise

from

being

generated

upon

turning

on

the

power

No

sound

is

produced

for

several

seconds

after

turn-on

VOLTAGE

SELECTION

Not

available

for

U.K.,

Canada

and

Scandinavia

The

unit

is

a

variable

voltage

equipment

that

can

run

on

120V.

220V

or

240V

power

supply

Your

unit

should

already

be

preset

at

the

proper

voltage

for

use

in

your

area

However,

if

you

move

to

an

area

where

the

power

supply

voltage

is

different,

consult

your

dealer

5

SWITCHES

AND

CONTROLS

(1)

Power

Button

Depress

Ihis

bulton

to

turn

on

the

power

in

the

unit.

Press

the

bulton

a

second

time

to

release

it

and

lo

cut

off

the

power

(2)

Power

Indicator

Glows

when

power

is

turned

on

with

the

power

button

(3)

Speaker

Remote

Button

Press

the

bulton

to

actuate

the

speaker

system

connected

to

REMOTE

speaker

terminals

on

the

rear

panel

Release

the

button

OFF

to

cut

off

sound

from

remote

speakers.

(4)

Protection

Indicator

The

indicator

normally

lights

for

several

seconds

upon

turn¬

ing

on

the

power

When

the

indicator

goes

off,

it

means

the

unit

is

in

ihe

normal

operating

state.

The

indicator

glows

when

abnormally

high

temperature

is

built

up

inside

the

unit

In

such

a

case,

ihe

indicator

will

remain

on

until

the

temperature

inside

the

unit

drops

to

a

normal

level

When

the

indicator

goes

off,

it

indicates

the

unit

has

returned

to

ihe

normal

operating

state

(5)

Headphones

Jack

Connect

headphones

to

listen

through

Ihe

headphones

When

the

SPEAKER

REMOTE

button

is

at

OFF.

the

sound

from

the

speakers

connected

to

the

REMOTE

SPEAKERS

ter¬

minals

is

cut

off

and

you

can

adjust

ihe

headphone

volume

with

the

VOLUME

control

If

a

speaker

system

is

connected

to

the

DIRECT

SPEAKERS

terminals,

however,

the

sound

from

those

speakers

cannot

be

cut

off.

so

listening

through

the

headphones

only

is

im¬

possible

To

listen

through

Ihe

headphones

alone,

do

not

connect

any

speakers

to

the

DIRECT

SPEAKERS

terminals.

(6)

Tone

Controls

Two

separate

tone

controls

regulate

bass

and

treble

respec¬

tively

knob

labeled

BASS

is

for

low

frequency

range

and

TREBLE

tor

high

frequency

range

Rotate

the

knob

clockwise

to

boost

the

response,

and

coun¬

terclockwise

to

cul

it

(7)

Tone

Selector

With

the

selector

al

OFF,

Ihe

signals

do

not

pass

through

the

tone

control

circuit

(in

order

to

prevent

deterioration

of

the

tone

quality)

Therefore

the

tone

controls

do

not

function,

but

this

unit

provides

superior

tone

quality

If

the

listening

room

acous¬

tics

are

extremely

lively

or

dead

and

no

adjustment

is

possi*

ble

by

rearranging

the

furnitures

or

Ihe

speakers,

set

this

selector

to

ON

You

can

then

adjust

the

tone

with

the

tone

controls

At

the

MONO

position,

all

the

signals

are

output

in

mono,

and

the

tone

controls

are

active

(8)

Volume

Control

Used

to

regulate

ihe

volume

level

Turn

clockwise

to

increase

the

volume,

and

counterclockwise

to

reduce

if

This

is

a

dual

concentric

knob

which

permits

either

separate

or

combined

adjustment

of

both

channels

(9)

CD

Direct

Switch

and

Level

Control

With

the

switch

at

ON.

the

signals

from

the

CD

player

are

sent

to

the

power

amplifier

section

directly

to

be

amplified

and

out¬

put

In

this

case,

no

control

functions

of

this

unit

activate

and

you

can

enjoy

the

excellent

sound

quality

of

the

compact

disc

without

any

deterioration

The

volume

of

the

CD

sound

can

be

adjusted

by

using

the

input

LEVEL

control

Normally

set

the

switch

to

OFF

The

signals

from

the

CD

player

pass

through

the

control

amplifier

section,

and

the

volume

control

and

lone

control

functions

activate.

The

LEVEL

control

does

not

function

with

this

switch

at

the

OFF

position

(10)

Tape

Monitor

Selector

Used

to

listen

to

a

signal

supplied

from

ihe

tape

deck.

Set

the

selector

to

TAPE

1

position

tor

the

signal

from

a

tape

deck

connected

to

TAPE

1

terminals

on

the

rear

panel,

and

set

to

TAPE

2

for

the

deck

connected

to

TAPE

2

terminals

When

it

is

set

to

the

il

1

►

2

"

position,

you

can

perform

tape-

to-tape

copying

from

the

TAPE

1

to

the

TAPE

2

deck.

Like*

wise,

the

ll

2

^

1

M

position

permits

copying

from

the

TAPE

2

to

the

TAPE

t

deck

Be

sure

to

set

this

selector

lo

SOURCE

when

listening

to

a

source

selected

by

the

Input

selector.

(11)

Function

Selector

Select

ihe

program

source

to

play

or

record.

PHONO:

Turntable

connected

to

the

PHONO

terminals.

CD

CD

player

connected

to

the

CD

terminals

TUNER:

Tuner

connected

to

the

TUNER

terminals.

AV/AUX

1,

AV/AUX

2:

Video

cassette

recorder

or

video

disc

recorder

connected

to

the

AV/AUX

1

or

AV/AUX

2

terminals

Use

this

selector

with

the

Tape

Monitor

selector

al

the

SOURCE

position

OPERATION

*

Before

commencing

operation,

check

to

see

if

all

con¬

nections

are

properly

made

*

Always

be

sure

to

set

the

volume

control

to

the

minimum

position

before

turning

on

power

*

When

listening

to

a

compact

disc

with

the

CD

DIRECT

switch

at

the

ON

position,

be

sure

to

turn

the

LEVEL

control

completely

lo

the

left

before

turning

the

power

switch

to

ON

Listening

From

turntable

1

S

ei

Tape

Monitor

selector

to

SOURCE

2

Select

PHONO

on

the

function

selector

3

Start

playing

turntable,

and

raise

the

volume

to

the

desired

level

Playing

a

compact

disc

•

Playing

in

the

direct

signal

path

mode

t

Set

the

Tape

Monitor

selector

to

SOURCE

2

Select

CD

on

the

function

selector

3

Set

the

CD

DIRECT

switch

lo

ON

4

Start

pfaymg

the

compact

disc

and

adjust

the

volume

with

Ihe

LEVEL

control

4

SPECIFICATIONS

Continuous

Power

Output

BO

watts*

per

channel,

min

RMS

both

channels

driven

into

8

ohms

from

20

lo

20,000

Hz

with

no

more

than

0

03%

total

harmonic

distortion

DIN

Output

.

150

walls

per

channel

(1

kHz.

4

ohms.

1%

THD)

Peak

Current.

.

...

50

A

(0

t

ohms,

10

>*sec,

1

pulse)

Total

Harmonic

Distortion

No

more

than

0.03%

(conti¬

nuous

rated

power

output)

No

more

than

0.03%

(conti¬

nuous

1/2

rated

power

output)

No

more

than

0

05%

(1

watt

per

channel

powef

output,

8

ohms)

Intermoduration

Distortion

No

more

than

0.05%

(conti¬

nuous

rated

power

output)

No

more

than

0

05%

(conti¬

nuous

1/2

rated

power

output)

No

more

than

0,05%

(1

watt

per

channel

power

output,

8

ohms)

Output

SPEAKERS

,

8

ohms

nominal

HEADPHONES.

4-16

ohms

Damping

Factor.

Input

Sensittvity/lmpedance:

180

(20

to

20,000

Hz,

8

ohms)

PHONO(MC).

250

jiV/180

ohms

PHONO

(MM).

2

8

mV/47

kohms

CD.

TUNER.

150

mV/24

kohms

AV/AUX

1,2.

150

mV/24

kohms

TAPE

MONITOR

1,2.

150

mV/24

kohms

Overload

Level

(T

H

D.

0,5%.

1

kHz):

PHONO

(MC).

20

mV

PHONO

(MM)

,

,

180

mV

CD.

TUNER.

TAPE

1,2..

5V

AV/AUX

1,2.

Frequency

Response

5V

PHONO

.

20

to

20,000

Hz.

±

0,2

dB

(RIAA

STD)

CD.

TUNER,

TAPE

1,2

4

10

100,000

Hz,

+

1.0

dB.

-

3

0

dB

AV/AUX

1,2

.

4

to

100,000

Hz,

+10

dB,

-

3

0

dB

Signal’to-Noise

Ratio

(IHF,

A

network)

PHONO

(MC).

70

dB

PHONO

(MM)

80

dB

CD.

TUNER.

TAPE

1.2

102

dB

AV/AUX

1.

2.,,..

102

dB

Power

Requirement

120V/60

Hz,

220V/50

Hz,

240V/50

Hz

or

120,

220,

240V/50-60

Hz

(switchabie)

(depending

on

destinations)

Power

Consumption

.

380

walls

Dimensions

(overall)

430

(W)

x

109

(H)x

317(D)

mm

16*15/16"

x

4-7/32"

*

12-15/32*

Weight

(net).

9

8

kg/21

56

lbs

*

Specifications

and

design

subjecl

to

possible

modifies*

lion

without

notice

'

Measured

pursuant

to

the

Federal

Trade

Commission's

Trade

Regulation

Rule

on

Power

Claims

for

Amplifiers

(applicable

to

ihe

U

S

A

only)

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