Harman Kardon A250 Owners Manual - Page 5

Since

several

different

recording

curves

have

been

used

in

the

past

(differing

with

respect

to

the

turnover

points

and

the

degree

of

emphasis

or

de

-emphasis)

a

choice

of

playback

curves

is

provided

in

Harman-Kardon

instruments.

For

all

stereophonic

records

set

the

EQUALIZATION

switch

in

the

RIAA

position.

For

stereophonic

tapes

set

the

control

to

the

appropriate

tape

playback

speed.

This

automatically

compensates

for

the

tape

equalization.

ADDITIONAL

INFORMATION

Speaker

Phasing:

When

more

than

one

speaker

is

used

in

any

music

reproducing

system

they

must

be

connected

in

such

a

way

as

to

aid

each

other,

rather

than

to

work

against

each

other.

Since

two

speakers

must

be

used

for

stereo

reproduction,

this

caution

applies.

Checking

for

phase,

and

correcting

if

necessary,

is

quite

simple,

and

is

done

at

the

time

of

installation

of

the

system.

Play

a

record

with

readily

apparent

bass

tones.

Listen

carefully

to

the

strength

and

clarity

of

the

bass.

Now

reverse

the

connections

of

one

of

the

speakers.

If

the

bass

notes

are

now

louder

and

clearer,

the

speakers

are

now

correctly

phased.

If

the

bass

seems

weaker,

the

original

connection

was

correct.

How

To

Play

A

Monaural

LP

Record:

If

you

have

been

playing

stereo

records,

merely

remove

the

stereo

record

and

put

on

a

monaural

record.

It's

as

simple

as

that!

All

stereo

record

players

and

phonographs

are

completely

compatible

with

monaural

LP

records.

LP's

and

stereos

may

be

intermixed

on

any

good

stereo

record

changer.

USING

THE

MODEL

A-250

AS

A

MONAURAL

AMPLIFIER

INSTALLATION

PROCEDURE

Connecting

Your

Speakers:

The

Model

A-250

may

be

used

as

a

50

watt

monaural

amplifier

merely

by

throwing

the

SEPARATE

-PARALLEL

switch,

located

on

the

front

chassis

sup-

port

apron

directly

behind

the

pilot

light,

to

the

"PARALLEL"

position

and

by

strapping

the

speaker

output

strips

together.

IMPORTANT:

Whenever

the

SEPARATE

-PARALLEL

switch

is

in

the

"PARALLEL"

position,

the

speaker

output

terminals

must

be

strapped

together,

and

conversely,

whenever

the

speaker

output

terminals

are

strapped

together,

the

SEPARATE

-PARALLEL

switch

must

be

in

the

"PARALLEL"

position.

Connect

one

speaker

lead

to

either

32

ohm

terminal

on

the

SPEAKER

OUT-

PUT

strip

and

the

other

lead

to

either

A

terminal.

Tie

the

32

ohm

terminals

together.

If

you

are

using

an

8

ohm

speaker,

tie

the

two

16

ohm

terminals

together

instead

of

the

32

ohm

terminals

as

described.

The

A

and

B

terminals

on

both

output

strips

have

been

strapped

together

at

the

factory,

and

should

be

left

that

way.

The

SPEAKER

SELECTOR

switches

located

on

the

front

panel

may

be

placed

in

any

position

since

they

are

inoperative

for

this

method

of

operation.

(See

DIAGRAM

C).

F

RIGHT

SPEAKERS

LEFT

SPEAKERS

OeA

B

4

8

16

32

SPEAKER

Oe

®

B

4

8

16

32

Diagram

C

Harman Kardon A250 Owners Manual - Page 5

ADDITIONAL, INFORMATION, Speaker, Phasing, Monaural, Record, USING, MODEL, A-250, MONAURAL,

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