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owners

,

1

manual

I

I-

RDTFI

hi-fn

STEREO

POWER

AMPLIFIER

RB-990BX

ENGLISH.

1

DEUTSCH.

5

FRANCAIS.

8

B*S§.

11

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.

SAFETY

INSTRUCTIONS

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

A

The

bghtnmg

Hash

with

arrowhead

symbol.

»*th»n

an

equilateral

tr.anglo,

is

ntonOeO

to

a*en

you

to

the

presence

ol

uninsulated

“dangerous

voltage”

—thin

the

product's

enclosure

that

may

be

ot

sufficient

magnitude

to

constitute

a

nsfc

ol

dcctnc

shoe*

to

persons

/

fi\

Tl

®

«»clamation

point

•vthm

an

egudaterat

triangle

is

/

I

\

'°<lnd

to

alert

you

to

the

presenco

ol

imponant

/

I

\

«'fating

and

maintenance

(servicing)

instructions

in

the

/

1

\

Wi

raiure

accompanying

the

apphanco

EXCLUSIVE

NOTE

FOR

U.K.

If

your

unit

comes

with

a

2-core

cable

wilhout

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

mams

lead

are

coloured

in

accordance

with

the

following

code:

BLUE:

NEUTRAL

BROWN:

LIVE

As

the

colours

of

the

wires

in

the

miins

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

8LUE

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

N

or

coloured

BLUE

or

BLACK.

The

wire

which

i:.

coloured

BROWN

musi

be

connected

to

the

terminal

which

is

marked

with

the

letter

L

or

colour

BROWN

or

RED.

J.

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

operaimg

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

>asement.

or

near

a

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

How

of

air

through

the

ventilation

openings.

9.

Heat

—

The

appliance

should

be

situated

away

from

heal

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

Ihe

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

b«-

cleaned

only

as

recommended

by

the

manufac:urer

13.

Nonuse

Periods

—

The

power

cord

of

Ihe

appliance

should

be

unplugged

from

the

outlet

when

left

unused

for

a

long

period

of

time.

14.

Object

and

Liquid

Entry

—

Care

should

oe

taken

so

that

obiects

do

not

fall

into

and

liquids

not

monied

into

the

in¬

side

of

the

appliance.

15.

Damage

Requiring

Service

—

The

appliance

should

be

serviced

by

qualified

service

person:

e!

when:

A.

The

power-supply

cord

or

the

plug

has

been

damaged,

or

B.

Objects

have

l.illen.

or

liquid

has

been

spilled

into

ihe

appliance;

or

C.

The

appliance

nas

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

ihe

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

POWER

AMPLIFIER

RB-990BX

ENGLISH

INTRODUCTION

We

al

Hotel

want

to

thank

you

for

purchasing

our

audio

product.

Rotel

audio

products

are

designed

to

use

the

latest

electronic

technology,

and

they

incorporate

our

long

experience

as

a

specialist

manufacturer

of

audio

equipment.

We

are

confident

that

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

starting

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.

SPEAKERS

When

using

the

RB-990BX

as

a

stereo

power

amplifier,

please

use

a

speaker

system

with

an

impedance

range

of

4-16

ohms.

The

speakers'

impedance

specifications

can

be

found

on

the

plate

at

the

rear

of

the

speakers

or

in

the

user's

manual.

Please

check

to

be

sure

they

are

of

the

correct

impedance.

CABLES

To

ensure

that

the

RS-990BX

operates

at

its

full

potential

and

you

can

enjoy

the

most

exceptional

sound

quality

from

your

system,

we

strongly

recommend

using

high-quality

RCA

pin

cables

to

connect

the

R8-990BX

to

the

control

amplifier

and

low-capacity,

low-impedance

speaker

cables.

BEFORE

ENJOYMENT/POWER

SUPPLY

Follow

the

instructions

below

for

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

the

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.

If

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

sunlight.

Be

careful

not

to

place

the

unit

in

a

highly

enclosed

place

such

as

near

a

wall

or

on

a

bookshelf.

A

poor

ventilation

will

cause

undesirable

effects

to

the

unit.

6.

Moving

the

unit

When

transporting,

remove

the

AC

cord

from

the

wall

outlet

and

all

other

connected

cords

on

the

rear

panel

to

prevent

wire

breakage

and

short

circuits.

7.

If

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

Ihinners

on

the

front

panel.

Always

use

a

soft,

dry

cloth

to

clean

the

unit.

9.

Owner's

manual

Keep

the

owner's

manual

near

the

unit,

and

record

the

serial

number

(found

on

the

rear

panel)

on

the

cover.

SPEAKERS

AND

PREAMPLIFIER

CONNECTION

1.

Connect

the

speaker

cord

ol

the

right

speaker

to

the

RIGHT

terminals

and

the

cord

of

the

left

speaker

to

the

LEFT

terminals

of

SPEAKERS

terminals.

Note

the

+

-

connection

(+

lead

to

+

terminal

and

-

lead

to

-

terminal).

2.

Using

two

cables

with

phono

connectors,

connect

the

OUTPUT

L

jack

ol

the

preamplifier

to

the

INPUT

LEFT

jack

of

this

unit

and

the

OUTPUT

R

jack

of

the

preamplifier

to

the

INPUT

RIGHT

jack

of

this

unit.

HOW

TO

CONNECT

THE

SPEAKER

CORDS

TO

THE

SPEAKERS

TERMINALS

Strip

the

cord

end

and

twist

leads

firmly,

then

connect

it

to

the

SPEAKERS

terminal.

The

SPEAKERS

terminals

of

this

unit

are

screw

type.

Turn

the

screw

counterclockwise

and

insert

the

cord

end.

Then

tighten

the

screw

firmly

by

turning

clockwise

so

that

the

speaker

cord

cannot

be

pulled

out

accidentally.

SPEAKER

CONTROL

AMPLIFIER

LEFT

RC-980BX

SPEAKER

RIGHT

SWITCHES

AND

CONTROLS

ing

on

the

power.

When

the

indicator

goes

off,

it

means

the

unit

is

in

the

normal

operating

state.

(1)

Power

Button

The

indicator

glows

when

abnormally

high

temperature

is

built

Depress

this

button

to

turn

on

the

power

in

the

unit.

Press

up

inside

the

unit.

In

such

a

case,

the

indicator

will

remain

the

button

a

second

time

to

release

it

and

to

cut

off

the

power.

on

until

the

temperature

inside

the

unit

drops

to

a

normal

level.

(2)

Power

Indicator

When

the

indicator

goes

off,

it

indicates

the

unit

has

returned

Glows

when

power

is

turned

on

with

the

power

button.

10

the

normal

operating

state.

(3)

Protection

Indicator

The

indicator

normally

lights

for

several

seconds

upon

turn-

OPERATION

•

Before

commencing

operation,

check

to

see

if

all

con¬

nections

are

properly

made.

•

Before

turning

on

the

power

in

the

unit,

always

be

sure

to

turn

down

the

preamplifier

volume

control

to

minimum.

1.

Turn

on

the

preamplifier.

2.

Turn

on

the

RB-990BX.

3.

Reproduce

a

desired

source,

and

raise

the

volume

level

on

the

preamplifier.

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

RB-990BX

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

automati¬

cally

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.

SPECIFICATIONS

Continuous

Power

Output—

200

watts*

per

channel,

min.

RMS

both

channels

driven

into

8

ohms

trom

20

to

20.000

Hz

with

no

more

than

0.03%

total

harmonic

distortion.

DIN

Power

Output.

330

watts

per

channel

(tkHz,

4

ohms,

1%

THD)

Peak

Current.120

A

(0.1

ohms,

10/^ec,

1

pulse)

Total

Harmonic

Distortion

(20

to

20,000

Hz).No

more

than

0.03%

(con-

tinuous

rated

power

output)

No

more

than

0.01%

(con¬

tinuous

1/2

rated

power

output)

No

more

than

0.02%

(1

watt

per

channel

power

output,

8

ohms)

Intermoduration

Distortion

(60

Hz

:

7

kHz

=

4:1).No

more

than

0.02%

(con¬

tinuous

rated

power

output)

No

more

than

0.02%

(con¬

tinuous

1/2

rated

power

output)

No

more

than

0.02%

(1

watt

per

channel

power

output,

8

ohms)

Output.Speaker

8

ohms

nominal

Damping

Factor.

1,000

(20

to

20,000

Hz.

8

ohms)

Input

Sensitivity/

Impedance.

1.0V/33kohms

Frequency

Response.4

to

100,000

Hz.

+0.5

dB,

-3.0

dB

Signal-to-Noise

Ratio

(IHF

A

network).

120

dB

Power

Requirement.120

V/60

Hz.

220

V/50

Hz,

240

V/50

Hz

or

100

V/50

Hz-

60

Hz

(depending

on

destinations)

Power

Consumption.

550

watts

Dimensions

(overall).

440

(W)

x

120

(H)

x

375

(D)

mm

17-5/16'x

4-23/32'X

14-3/4'

Weight

(net).15.5

kg/34.1

lbs.

•

Specifications

and

design

subject

to

possible

modilication

without

notice.

*

Measured

pursuant

to

the

Federal

Trade

Commission’s

Trade

Regulation

Rule

on

Power

Claims

for

Amplifiers

(applicable

to

the

U.S.A.

only).