Kenwood KM-991 Bedienungsanleitung

GOO/ANS>)|

STEREO

POWER

AMPLIFIER

KM-991

INSTRUCTION

MANUAL

KENWOOD

CORPORATION

338-00

(

_Y)[GA]

Introduction

Your

choice

this

product

indicates

that

you

are

devotee

excellence

sound

reproduction.

appreciate

your

patronage

and

take

pride

the

long

tra-

dition

quality

components

that

our

company

represents.

that

you

can

get

the

most

out

your

unit,

suggest

that

you

take

the

time

read

through

this

manual

before

you

hook

and

operate

your

system.

This

will

acquaint

you

with

operating

features

and

system-connection

consid-

erations

that

your

listening

pleasure

will

enhanced

right

from

the

start.

You

will

notice

that

ail

aspects

planning,

engineering,

styling,

operating

convenience

and

adaptability

have

sought

anticipate

your

needs

and

desires.

Accessory

Keep

this

manual

handy

for

future

reference.

plug

adaptor

For

your

records

(except

for

some

areas)

Record

the

serial

number,

found

the

back

the

unit,

For

the

unit

with

European

the

spaces

designated

the

warranty

card,

and

the

plug

areas

other

than

Europe.

space

provided

below.

Refer

the

model

and

serial

num-

bers

whenever

you

call

upon

your

dealer

for

information

service

this

product.

Model__________—___

Serial

Number

Unpacking

Unpack

the

unit

carefully

and

make

sure

that

all

accessories

are

put

aside

they

will

not

lost.

Examine

the

unit

for

any

possibility

shipping

damage.

your

unit

damaged

fails

operate,

notify

your

dealer

immediately.

your

unit

was

shipped

you

directly,

notify

the

shipping

company

without

delay.

Only

the

consignee

(the

person

company

receiving

the

unit)

can

file

claim

against

the

carrier

for

shipping

damage.

recommend

that

you

retain

the

original

carton

and

pack-

ing

materials

for

use

should

you

transport

ship

the

unit

the

future.

Conte

nts

Caution:

Read

the

pages

marked

carefully

ensure

safe

operation.

Introduction

Controls

and

indicators

Before

applying

power

Operating

instructions

Safety

precautions

Listening

the

program

source

IMPORTANT

SAFEGUARDS

Listening

through

headphones

System

connections

POWER

LEVEL

METER

outlets

case

difficulty

Connection

speakers

Specifications

Setting

the

SPEAKER

IMPEDANCE

SELECTOR

KM-991

(En)

Caution:

Read

this

page

carefully

ensure

safe

operation.

Before

applying

power

Seen

eee

nace

cece

For

the

U.S.A.

and

Canada

Important!

Units

shipped

the

U.S.A.

and

Canada

are

designed

for

opera-

tion

120

volts

only.

CAUTION:

PREVENT

ELECTRIC

SHOCK

NOT

USE

THE

PLUG

WITH

EXTENSION

CORD,

RECEPTACLE

OTHER

OUTLET

UNLESS

THE

BLADES

CAN

FULLY

IN-

SERTED

PREVENT

BLADE

EXPOSURE.

For

the

United

Kingdom

Important!

Units

shipped

the

U.K.

are

designed

for

operation

240

volts

only.

The

mains

plug

must

removed

from

the

wall

socket

prior

any

internal

examination.

The

wires

this

mains

lead

are

coloured

accordance

with

the

following

code:

;

Neutral

The

wires

this

mains

lead

must

connected

the

termi-

nals

the

plug

follows:

Wire

colour

Piug

terminal

marking

Black

Brown

Live

Blue

Neutral

)

Plug

Notes:

13-amp

plug

used,

this

must

fitted

with

5-amp

fuse.

3-pin

plug

with

earthing

contact

used,

wire

must

connected

the

terminal.

Safety

precautions

For

Australia

and

Europe

Important!

Units

shipped

Australia

are

designed

for

operation

240

only.

Units

shipped

Europe

are

designed

for

operation

230

only.

For

other

countries

Important!

Units

shipped

countries

other

than

the

above

countries

are

equipped

with

voltage

selector

switch

the

rear

panel.

Refer

the

following

paragraph

for

the

proper

setting

this

switch.

voltage

selection

This

unit

operates

110-120

220-240

volts

AC.

The

voltage

selector

switch

Type

the

rear

panel

set

the

voltage

that

prevails

the

area

which

the

unit

shipped.

Before

connecting

the

power

cord

your

out-

let,

make

sure

that

the

setting

position

this

switch

matches.

your

line

voltage.

not,

must

set

your

voltage

ac-

cordance

with

the

following

direction.

Note:

———__—$__$$

Our

warranty

does

not

cover

damage

caused

excessive

line

voltage

due

improper

setting

the

voltage

selector

switch.

voltage

selector

switch

—-

<—

AC110-

120V

AC220V~

AC240V~

mall

AC110V-

<<»

AC220V-

120V~

240V

Move

switch

lever

match

your

line

voltage

with

small

screwdriver

other

pointed

tool.

WARNING:

PREVENT

FIRE

ELECTRIC

SHOCK,

NOT

EXPOSE

THIS

APPLIANCE

RAIN

MOISTURE.

CAUTION

SAGER

CAUTION:

REDUCE

THE

RISK

ELECTRIC

SHOCK,

NOT

REMOVE

COVER

(OR

BACK).

USER-SERVICEABLE

PARTS

INSIDE,

REFER

SER-

OVEN

VICING

QUALIFIED

SERVICE

PERSONNEL.

THE

LIGHTNING

FLASH

WITH

ARROWHEAD

SYMBOL,

WITHIN

EQUILATERAL

TRIANG

LE,

INTENDED

ALERT

THE

USER

THE

PRESENCE

UNINSULATED

‘‘DANGEROUS

VOL-

TAGE”

WITHIN

THE

PRODUCT'S

ENCLOSURE

THAT

MAY

SUFFICIENT

MAGNITU

CONSTITUTE

RISK

ELECTRIC

SHOCK

PERSONS.

THE

EXCLAMATION

POINT

WITHIN

EQUILATERAL

TRIANGLE

INTENDED

ALERT

THE

USER

THE

PRESENCE

IMPORTANT

OPERATING

AND

MAINTENANCE

(SERVICING)

IN-

STRUCTIONS

THE

LITERATURE

ACCOMPANYING

THE

APPLIANCE.

KM-991

(En)

IMPORTANT

SAFEGUARDS

Please

read

ail

the

safety

and

operating

instructions

before

operating

this

unit.

For

best

results,

all

warnings

placed

the

unit

and

adhere

the

operat-

ing

and

use

instructions.

These

safety

and

operating

in-

structions

should

retained

for

future

reference.

Power

sources

—

The

unit

should

connected

power

supply

only

the

type

described

the

operating

instructions

marked

the

appliance.

Power-cord

protection

—

Power-supply

cords

should

routed

that

they

are

not

likely

walked

pinched

items

placed

upon

against

them,

pay

particular

attention

cords

plugs,

convenience

receptacles,

and

the

point

where

they

exit

from

the

unit.

Never

pull

stretch

the

cord.

Grounding

polarization

—

The

precautions

should

taken

that

the

grounding

polariza-

tion

means

this

unit

not

defeated.

Ventilation

—

The

unit

should

situated

that

its

location

position

does

not

interfere

with

its

proper

ventilation.

maintain

good

ventilation,

not

put

records

table-cloth

the

unit.

Place

the

unit

least

away

from

the

walls.

not

use

the

unit

bed,

sofa,

rug

similar

surface

that

may

block

the

ventilation

openings.

Water

and

moisture

—

The

unit

should

not

be’

used

near

water

—

for

example,

near

bathtub,

washbowl,

kitchen

sink,

laundry

tub,

wet

base-

ment,

near

swimming

pool,

etc.

Temperature

—

The

unit

may

not

function

pro-

perly

used

extremely

low,

freezing

tempera-

tures.

The

ideal

ambient

temperature

above

+5°C

(47°F).

kM-991

(En)

Caution

Read

this

page

carefully

ensure

safe

operation.

7.Heat

—

The

unit

should

situated

away

from

heat

sources

such

radiators,

heat

registers,

stoves,

other

units

(including

amplifiers)

that

produce

heat.

Electric

shock

—

Care

should

taken

that

ob-

jects

not

fall

and

liquid

not

spilled

into

the

en-

closure

through

openings.

metal

object,

such

hair

needle,

comes

into

contact

with

the

inside

this

unit,

dangerous

electric

shock

may

result.

For

families

with

children,

never

permit

chil-

dren

put

anything,

especially

metal,

inside

this

unit.

9.Enclosure

removal

—

Never

remove

the

en-

closure.

the

internal

parts

are

touched

accidentally,

serious

electric

shock

might

occur.

10.

Magnetic

fields

—

Keep

the

unit

away

from

sources

magnetic

fields

such

sets,

speaker

systems,

radios,

motorized

toys

magnetized

objects.

11.

Cleaning

—

not

use

volatile

solvents

such

alcohol,

paint

thinner,

gasoline,

benzine,

etc.

clean

the

cabinet.

Use

clean

dry

cloth.

12.

Carts

and

stands

—

appliance

and

cart

com-

13.

14.

15.

bination

should

moved

with

care.

Quick

stops,

excessive

force,

and

uneven

surfaces

may

cause

the

appliance

and

cart

combination

overturn.

——

Nonuse

periods

—

The

power

cord

the

unit

should

unplugged

from

the

outlet

when

left

un-

used

for

long

period

time.

Abnormal

smell

—

abnormal

smell

smoke

detected,

immediately

turn

the

power

OFF

and

pull

out

the

power

cord.

Contact

your

dealer

nearest

service

center.

POWER

OFF!

Damage

requiring

service

—

The

unit

should

serviced

qualified

service

personnel

when:

The

power-supply

cord

the

plug

has

been

damaged;

Objects

have

fallen,

liquid

has

been

spilled

into

the

unit;

The

unit

has

been

exposed

rain;

The

unit

does

not

appear

operate

normally

exhibits

marked

change

performance;

The

unit

has

been

dropped,

the

enclosure

damaged.

Servicing

—

The

user

should

not

attempt

ser-

vice

the

unit

beyond

that

described

the

operating

instructions.

All

other

servicing

should

referred

qualified

service

personnel.

Outdoor

antenna

grounding

—

outside

an-

tenna

connected

the

receiver,

sure

the

an-

tenna

system

grounded

provide

some

protection

against

voltage

surges

and

built

static

charges.

Section

810

the

National

Electrical

Code,

ANSI/

NFPA

No.

70—1984,

provides

information

with

respect

proper

grounding

the

mast

and

supporting

structure,

grounding

the

lead-in

wire

antenna

discharge

unit,

size

grounding

con-

Caution

Read

this

page

carefully

ensure

safe

operation.

ductors,

location

antenna-discharge

unit,

connec-

tion

grounding

electrodes,

and

requirements

for

the

grounding

electrode.

See

Figure.

EXAMPLE

ANTENNA

GROUNDING

PER

NATIONAL

ELECTRICAL

CODE

ANTENNA

GROUND

ANTENNA

DISCHARGE

UNIT

(NEC

SECTION

810-20)

ELECTRIC

RVICE

(NEC

SECTION

810-21)

GROUND

CLAMPS

POWER

SERVICE

GROUNDING

ELECTRODE

SYSTEM

NEC

—

NATIONAL

ELECTRICAL

CODE

(NEC

ART

250,

PART

18.

Power

lines

—

outdoor

antenna

should

lo-

cated

away

from

power

lines.

19.

outlets

—

not

connect

other

audio

equip-

ment

with

power

consumption

larger

than

that

specified

the

outlet

the

rear

panel.

Never

connect

other

electrical

units,

such

iron

toaster,

prevent

fire

electric

shock.

Notes:

Item

not

required

except

for

grounded

polarized

equipment.

Item

and

are

not

required

except

for

units

provided

with

antenna

terminals.

ftem

complies

with

the

U.S.A.

KM-99°8

(En)

System

connections

Make

connection

shown

below.

When

connecting

the

system

components,

refer

also

the

instruction

manuals

the

components.

not

plug

the

power

lead

until

all

connections

are

completed.

Control

amplifier

KC-991

ALD110-120V

/AC220-240V~

50/60rz

‘SWITCHED:

‘TOTAL

SBOW

MAX.

eenren

Rear

ieg

SPEAKER

IMPEDANCE

SELECTOR

(Except

for

some

areas.)

outlet

Power

amplifier

KM-991

410V-

are=

220V-

421

240v~

voltage

selector

switch

Unswitched

outlets

(Except

for

some

areas.)

outlet

inati

UNSWITCHED

outlet

ence

Shape

the

outlet

The

power

the

component

connected

this

For

U.S.A.,

Canada

ini

aye

switched

ON/OFF

reg

ard-

and

U.S.

Military

ess

the

key

the

main

unit.

For

other

countries

Notes:

Connect

all

cords

firmly.

connections

are

loose

there

could

loss

sound

noise

produced.

When

plugging

and

unplugging

connection

cords,

sure

first

remove

the

power

cord

from

the

outlet.

Plugging/unplugging

corsnec-

tion

Cords

without

removal

the

power

cord

can

cause

malfunctions

damage

the

unit.

not

connect

power

source

which

larger

than

that

indicated

the

socket

the

rear

the

unit.

kM991

(En)

Connection

speakers

@®

Push

the

lever

up.

Speaker

system

Insert

the

cord.

Lock

the

lever.

Never

short-circuit

the

and

speaker

cords.

the

left

and

right

speakers

are

connected

inversely

the

speaker

cords

are

connected

with

reversed

polarity,

the

sound

becomes

unnatural

with

ambiguous

acoustic

image

posi-

tioning.

sure

connect

the

speakers

and

Speaker

speaker

cords

correctly.

system

™@

Setting

the

SPEAKER

IMPEDANCE

SELECTOR

(Except

for

some

areas)

According

the

impedance

the

speakers

used,

set

the

SPEAKER

IMPEDANCE

SELECTOR

the

rear

panel

shown

the

table.

Speaker

Impedance

Selector

position

"LESS

THAN

8.2"

82,

162

“8

MORE"

During

speaker

system

connection

and

operation

the

SPEAK-

IMPEDANCE

SELECTOR,

set

the

POWER

key

OFF.

When

only

one

set

speakers

used,

use

tne

SPEAKER

terminals.

CC®

Even

when

only

one

speaker

systems

and

uses

4Q.

Finnie.

cle

speakers,

sure

set

the

SPEAKER

IMPEDANCE

Mone

SELECTOR

“LESS

THAN

Q”.

Speaker

protection

circuit

;

the

POWER

switch

this

unit

turned

with

the

speaker

cord

short-circuited,

the

speaker

protection

circuit

will

activated

automatically

and

sound

will

output.

this

case,

remove

the

short

circuit

the

speaker

cord

and

then

turn

the

POWER

switch

again

restore

normal

operation.

kmog1

4en)

Controls

and

indicators

POWER

SPEAKERS

A/B

POWER

LEVEL

switch

switches

METER

Headphones

jack

POWER

INDICATOR

METER

RANGE

(PHONES)

knob

SPEAKERS

and

switches

A,B

OFF

—

This

position

silences

all

speakers

permit

private

use

SPEAKERS

headphones.

AON

—

Activates

speakers

connected

the

SPEAKERS

ter-

(C—F

minals

the

rear

panel.

BON

—

Activates

the

speakers

connected

the

SPEAKERS

terminals

the

rear

panel.

A,BON

—

Activates

the

speakers

connected

the

SPEAKERS

and

terminals

simultaneously.

When

speakers

are

connected

only

the

SPEAKERS

termi-

nals,

the

sound

will

not

heard

both

the

SPEAKERS

and

switches

are

depressed

the

position.

ki-9¢1

(En)

Operating

instructions

Listening

program

source

Switch

the

power

on.

Select

input

source

the

control

amplifier.

The

audio

signal

that

source

will

input

from

the

con-

trol

amplifier

connected

this

unit.

Adjust

the

volume

the

control

amplifier.

The

output

level

displayed

the

POWER

LEVEL

METER.

Adjust

the

tone

the

control

amplifier.

POWER

LEVEL

METER

Listening

through

headphones

Insert

the

headphone

plug

into

the

headphones

jack.

PHONES:

Set

the

SPEAKERS

switch

that

both

speaker

systems

and

are

OFF.

Adjust

the

volume

the

control

amplifier.

sure

minimize

the

volume

before

unplugging

the

headphone

plug.

The

POWER

LEVEL

METER

can

display

the

output

power

level

200

watts.

However,

rather

rare

that

you

play

music

such

nigh

lev-

els

200

watts

your

home.

usual

cases,

the

meter

sensitivity

can

boosed

ten

times

display

the

level

finely.

Set

the

METER

RANGE

knob

the

x0.1

position.

METER

RANGE

x09

Levels

from

0.01

watt

200

watts

can

displayed.

return

the

normal

sensitivity,

set

the

switch

the

posi-

tion.

The

POWER

LEVEL

METER

displays

the

levels

from

0.4

200

watts

assuming

that

the

speaker

impedance

ohms.

the

impedance

your

speakers

other

than

ohms,

the

POWER

LEVEL

METER

may

not

display

correct

values.

KM-991

(En)

case

difficulty

What

appears

malfunction

may

not

always

serious.

your

unit

should

not

perform

expected,

consult

the

table

below

see

the

problem

can

corrected

before

seeking

help

from

your

dealer

service

representative.

Sympiom

Ceuse

Power

but

sound.

Poor

connection

wall

outlet.

Power

outlet

(Indicator

off.)

inactive.

Check

outlet

using

lamp

other

appli-

ance

(outlet

may

controlled

wall

switch).

Turn

the

POWER

switch

OFF,

identify

and

remove

the

cause,

and

turn

the

POWER

switch

again.

Protection

circuitry

operating.

Sound

not

output.

(Indicator

lights.)

The

speaker

cords

are

disconnected.

Connect

them

properly

referring

“System

connections”.

Adjust

the

control

amplifier's

volume

proper

level.

Check

speaker

switch.

Turn

the

power

off,

eliminate

the

short

circuiting,

then

turn

the

power

again.

The

VOLUME

set

the

minimum

position.

Speaker

switched

off.

Speaker

cords

are

short-circuited.

Audio

cords

are

short-circuited.

Sound

not

output

from

one

the

speakers.

The

speaker

cord

disconnected.

Connect

properly

referring

“System

connections”.

Adjust

the

Left/Right

balance.

The

BALANCE

control

set

extreme

position.

Note:

not

use

contact

cleaners

because

could

cause

malfunction.

specially

careful

against

contact

cleaners

containing

oil,

for

they

may

deform

the

plastic

components.

kN4-991

fn}

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