Harman Kardon SC18 Owners Manual - Page 10

TUNING

METER

(SC181O)

DIAL

SCALE

(SC181O)

Your

music

system

incorporates

a

D'Arsonval

movement

tuning

meter

for

precise

and

accurate

tuning.

The

meter

is

designed

to

operate

on

a

null

or

"zero"

center

principal.

Therefore,

the

meter

pointer

should

always

be

at

the

center

position

of

your

meter

dial

for

optimum

listening

performance.

To

accomplish

this,

rotate

your

tuning

knob

slowly,

in

one

direction

towards

the

station

of

your

choice.

As

you

tune

through

the

station

you

will

notice

the

pointer

swinging

from

left

or

right

past

the

zero

center.

THE

CORRECT

POINT

for

minimum

distortion

and

optimum

FM

reception

is

when

the

pointer

is

resting

at

the

"zero"

center

position.

TUNING

(SC181O

The

tuning

knob

(MODEL

SC1810)

is

located

on

the

right

side

front

panel

of

your

music

system.

This

knob

is

used

to

select

the

desired

station

when

your

function

selector

switch

is

placed

in

the

FM

Stereo

position.

SELECTING

MONOPHONIC

OR

FM

STEREO

BROADCASTS

(SC181O)

Under

normal

use

for

all

FM

broadcasts,

the

Function

Selector

Switch

should

be

placed

in

the

FM

STEREO

position.

Your

system

is

equipped

with

a

stereo

sensing

circuit

which

can

auto-

matically

determine

if

your

unit

is

receiving

monophonic

or

stereophonic

broad-

casts,

and

then

automatically

adjust

the

mode

of

operation.

If

the

station

is

transmitting

stereo,

your

system

will

automatically

switch

in

the

multiplex

section

and

you

will

hear

the

broadcast

in

full

stereo.

Should

the

station

conclude

broadcasting

in

stereo,

your

system

will

automatically

switch

back

to

monophonic

reception.

Should

you

receive

a

weak

stereo

signal

whose

quality

has

been

degraded

by

noise

or

poor

signal

conditions,

and

you

wish

to

listen

to

this

stereo

broadcast,

monophonically,

place

the

function

selector

switch

in

the

FM

MONO

position.

STEREO

INDICATOR

(SC181O)

A

stereo

indicator

is

located

in

the

extreme

right

hand

side

of

the

front

panel

and

operates

in

conjunction

with

the

FM

STEREO

position

of

the

Function

Selector switch.

The

indicator

visually

shows

the

reproduction

of

FM

stereo

through

your

receiver.

To

tune

for

FM

stereo

proceed

as

follows:

1.

Place

the

Function

Selector

Switch

in

the

FM

STEREO

position.

2.

Tune

to

the

station

of

your

choice

using

your

tuning

meter

for

precise

and

accurate

tuning.

Your

stereo

indicator

will

now

show

if

you

are

tuned

to

a

stereo

program.

If

the

indicator

is

OFF,

the

program

you

are

listening

to

is

being

broadcast

monophonically.

-8-

Vernier

action

tuning

has

been

incorporated

in

your

music

system

for

precise

and

accurate

tuning

of

FM

stations.

The

Dial

Scale

on

your

SC1810

music

system

is

marked

with

an

FM

frequency

scale

(88-108

mc).

This

scale

appears

illuminated

on

the

front

panel

of

your

music

system.

To

select

a

station,

simply

rotate

the

tuning

knob

until

you

see

the

number

which

corresponds

with

the

station

of

your

choice

appear

illuminated.

The

triangle

directly

over

the

illuminated

number

is

to

be

used

as

your

tuning

indicator.

For

precise

tuning,

use

this

procedure

in

conjunction

with

your

tuning

meter.

HUM

AND

NOISE

In

any

high

fidelity

installation,

hum

may

be

caused

by

the

interconnection

of

associated

equipment.

If

hum

is

experienced

with

your

receiver,

disconnect

everything

but

the

speakers

from

the

receiver.

If

hum

persists,

reverse

the

AC

line

cord.

CAUTION:

Hum

may

be

also

induced

by

defective

connecting

cables

or

by

running

these

cables

too

close

to

a

strong

AC

field.

OVERLOAD

PROTECTION

CIRCUIT

A

power

output

monitoring

relay

circuit

has

been

designed

into

your

Stereo

Music

system.

This

circuit

prevents

failure

of

the

output

transistors.

When

your

music

system

operates

normally,

the

output

relay

circuit

has

no

effect

on

signals

going

through

the

power

amplifier.

If

however

the

power

dissipation

in

the

output

transistors

becomes

excessive

due

to

a

speaker

short

circuit,

or

a

very

low

impedance

load,

the

monitoring

relay

circuit

will

activate

and

dis-

connect

the

output

transistors

from

your

system.

The

monitoring

relay

circuit

will

again

activate

and

resume

normal

operation

ONLY

after

the

overload

condition

has

been

eliminated.

SERVICE

If

this

instrument

should

not

perform

properly

during

the

first

two

(2)

years

after

date

of

purchase,

contact

the

factory

for

instruction.

The

factory

has

many

authorized

warranty

service

stations

in

the

United

States.

To

aid

us

in

selecting

a

service

station

convenient

to

you,

it

would

be

helpful

if

you

would

indicate

what

major

city

is

closest

to

your

home.

Please

write

our

Customer

Service

Department,

Harman-Kardon,

Incorporated,

Plainview,

New

York

11803.

Be

sure

to

include

the

model

and

serial

number

of

the

unit.

A

brief

description

of

your

other

components

is

often

of

help

in

answering

your

questions.

DO

NOT

return

this

instrument

to

Harman-Kardon

without

first

receiving

authorization.

Harman Kardon SC18 Owners Manual - Page 10

Harman Kardon SC18 Manual

Page 10 highlights