Harman Kardon BALLAD User manual

INSTRUCTION

MANUAL

It

is

essential you

read

this ins

tru

cti

on

booklet

c:i.

refully before installing yo

ur

high fidelity system. You h

ave

in

vested in an

ext

remely fine e

le

c

h·

cnic instru-

me

nt

into which

many

exce

ll

e

nt

en

gi

n

ee

ring

dev

el

opme

nt

s

ha

ve

b

ee

n incorpo-

rated,

and

eac

h is

important

for the

pro

per

operation

of

yo

ur

system. This booklet

has

bee

n

written

in simple non

-t

ec

hni

ca

l

bnguage

and

if

you will

t:ik-

3 time to

r

ead

it

f:h-

st before doing anything else, you w

:ill

fin

d

it

simple to

obtain

optimum

perfo

rm

ance

from yo

ur

Harm

an

-Kardon Model A230 Stereophonic Amplifier.

Be

s

ur

e

to

k

eep

this booklet available

at

all times.

It

contains

indi

spensab

le

technical a

nd

service information.

ThiJ

rs the Harman-Kard

on

S1er

eo Sy

mb

ol. It

i.r

your ,umra11ce

of

mperb

1/ereo perfo,-,nance.

j

UNPACKING

After

unpacking

the

Model

A230, i

nsp

ec

t

it

carefully for signs

of

transit

dam-

age.

Th

e

unit

was

subjected

to

man

y inspections

and

te

sts

prior

to

final

packing

,

and

ther

efo

re

sho

uld

be

in

perfect

condition.

If

damage

is visible,

notify

yo

ur

d

ea

ler

at

once.

If

th

e

unit

was

s

hipped

to you,

notify

the

transport

ation

company

without

del

ay

.

Check

th

e

contents

of

th

e

carton

thoroughly

and

inspect

the

folds

of

the

packing

material

before

discarding

it. Your

package

should

c

ontain

the

following

it

ems:

1 Mod

el

A230

Stereophonic

Amplifier-Preamplifier.

1

ln

s

tru

ction Booklet

1

Warranty

Card

1

Mounting

Template.

WA

RRANTY PO

LI

CY

We

ur

ge

you to fill

in

yo

ur

warranty

card

a

nd

mail

it

to

the

factory

with-

out

delay

to

protect

yo

ur

rights 1mder warranty.

Th

e wa

rranty

cards

ar

e ca

refully

fil

ed

for

r

efe

r

ence

and

should

you

re

quire

information

on

the

use

of

this

high

fidel-

ity unit, or re

pair

service,

we

will be

able

to

id

e

ntify

your

set

and

re

pl

y quickly.

N

OTE:

It

is

necessary

to

receive

factory a

utho

rization before re

turning

a

se

t for

warranty

r

epa

ir

to

an

authorized

station. Repairs

are

to be

returned

on

an

Express

Prepaid

basis. A le

tt

er desc

ribing

th

e

exac

t djfllculty

must

be

enclos

ed

with

the

unit

to

ge

th

er

with

your

original sales slip.

WA

R

RA

NTY

We

warrant

each

Mode

l A230

to

be

fr

ee

from defects in

mat

erial and

wo

rk-

mans

hip

under

normal

use a

nd

se

rvice, a

nd

in

accordance

with

th

e conditions

he

rein

below

set

forth,

for a pe

riod

of

1

year

from

date

of

delivery

to th

e original

purchaser,

and

agree

to

replace

or

r

epa

ir

any

part

or

part

s,

with

the

except

ion of

tubes

which

are

under

th

e

manufacturer's

90

da

y

warranty,

returned

to

us

within

sa

id

1

yea

r,

with

transportation

prepaid

and

wh

i

ch

o

ur

examination shall disclo

se

to

our

satisfaction to h

ave

b

ee

n

thu

s defective.

Thi

s

warranty

does

not

include

free labor, nor is

it

ap

pli

ca

bl

e

to

any

instrum

e

nt

which

shall

h

ave

b

ee

n r

epaire

d

or a

lt

ered

in

any

way

so as in

our

judgm

ent

to

a

ff

ec

t its

stability

or

reliability

nor

wh

ich has

been

s

ubj

ec

t

to

neglect,

misuse,

abuse,

neglig

e

nce

or

acc

id

e

nt

nor

which

has

had

the

se

rial

numb

er a

lt

ered, effa

ce

d, or rem

ove

d.

Neither

shall

this

warranty

app

ly to any ins

trum

en

t

which

has

b

een

co

nn

ec

t

ed

otherwise

th

an

in

accordance

wi

th

ins

tru

ctions

furnished

by

us.

This

warranty

is expressly

in

li

eu

of

all

other

warranties,

express

or

implied

,

a

nd

of

all

other

obligations

or

liability

on

our

part

,

and

we

ne

i

ther

assume

nor

authori

ze

any

representative

or

other

person

to

assume

for

us

any

o

ther

liability

in connection w

ith

the

sale

of

this

in

st

rum

e

nt.

IN

ST

ALLATION PR

OC

EDURE

Ventilati

on:

The

Ballad

is

we

ll

ve

ntilat

ed

in

itse

lf

,

but

sufficient

space

must

be

allowed

arou

nd

it

to p

erm

it

proper

a

ir

fl

ow.

Th

e

unit

m

ay

be

mount

ed

v·ertically. Allow

th

e

rear

of

the

eq

uipm

e

nt

cabi

n

et

to

remain

open

and

if poss

ib

le

cut

louvres

on

the

woode

n

mounting

pane

l

for

added

ventilation. Re

du

c

in

g

air

flow will

sharply

re-

duce

tub

e

and

co

mp

one

nt

li

fe. \Vh

en

installing

th

e

am

plifier on a

book

shelf,

do

not

place

books

or

oth

er objects

on

th

e

cage

or

in

the

imm

e

diate

vicinity

of

th

e

ins

trum

ent.

Follow

these

mountin

g

precautions

carefully a

nd

yom

unit

s

hould

continue

to

o

perat

e

perfectly

for ma

ny

years.

Power

Requirements:

Plug

the

AC

line

cord

into

any

outlet

furnishing 117 volts, 50

or

60 cycle

AC current.

The

voltage

may

vary

between

105

and

125 volts.

AC

Convenience Outlets:

Two

AC convenience receptacles

are

located

on

the

rear

panel

of

the

A230.

Auxiliary

equipment

(

tape

deck,

record

player,

tuner)

may

be

plugged

int

o

these outlets

and

will

be

controll

ed

by

the

push-button

power

on/off

switch

located

on

the

front

panel.

~T~

TAPE

EOUALllATION

:=:LEFT

RIGHT=

LOW

LEVEL

INPUT

HIGH

LEVEL

INPUT

TAPE

HI

AUX

TUNER

PHONO

HI

I-

TAPE

OUT

LEFT

RIGHT

I SPEAKER CONNECTIONS I

~©~CE1r~0~

A 8 COM

Lr,...J

L5_J

COM

8 A

~

L-.:::::::::::1

~

8""-

16.1'\.

SPEAKER

IMPEDANCE

l@D

oo

1

000

SPEAKER

PHASING

117V

AC 601"\,,

'\j"w

2

AMP

2 AMPS

TOTAL

[[]]

[OJ 8

REAR

PANEL

MODEL

A

230

Spea

ker

Connections:

Your

two

speakers shou

ld

be

identical

if

possible

to

obtain

optimum result

s.

Experts

agree

that

a perfectly

matched

system offers

the

best

stereophonic

re

-

production.

The

speakers

should

be

placed

along

the

same

wall

app

roximate

ly

8 to

15

feet

apart

depending

upon

room

size

and

furniture

placement.

It

may

be

neces-

sary to experiment

with

the

speakers

until

best

results

are

ob

tained.

Use

any

type

wire

to

connect

yo

w-

speakers

to

the

ampli£er. L

amp

cord

("zip cord") is excellent

and

may

be

dressed easily

around

the

molding for

an

inconspicuous

and

neat

installation.

Do

n

ot

drive

the stap

les or tacks

through

th

e

center

of

the

wire for this will

short

out

the

two

sections

and

will decrease

tl1e overall volume

or

short

out

the

speakers

ent

ir

ely.

It

is permissible to use

approximately 100

feet

of

speaker

connecting

wire

for

each

speaker

without

loss

of

volume.

The

unique

switching

arrangement

on

th

e

Mode

l A230 enables

you

to con-

nect

your

speakers

in

any

of

several ways.

It

is possible

to

have

stereo

in

one

room, while listening to monophonic reproduction

in

another

portion of your

home.

If

you

prefer,

you

may

add

a thii-d

channel

speaker

for

"fill"

in

yo

ur

main

listening room,

or

listen to monophonic

reproduction

in

another

location.

The

stereo

speake

r selector switches also

enable

you

to listen to stereo

in

one

room,

or

stereo

in

anot

her

portion

of

the

house. You

may

also

add

third

channel

speakers to

one

or

both

rooms, also selectable

by

the

front

panel

switches. Please

follow

the

diagrams listed

below

for

the

installati

on

best

suited

for

your

use.

St

ere

o

In

Room

A.

No

Speakers

In

Room B:

Connect

both

leads from

the

l

eft

speaker

in

Room A to terminals A

and

COM

on

the

LEFT

SPEAKER

OUTPUT

strip.

Connect

both

leads from

the

right

speaker

in

Room A

to

terminals A

and

COM

on

tlie

RIGHT

SPEAKER

OUTPUT

str

ip.

The

shorting

bars

between

all terminals

on

the

SPEAKER

OUTPUT

strips

must

remain

connect

ed

for this

method

of

operation. Refer to

Diagram

1.

.-----SP

EA

KE

R CONNEC

TI

ON

S---

-

r-CE

NT~E_R

__

-'---'---'-

"-'---'--

~

LE

FT

SPEAK

ER

SY

STEM

A

RIG

HT

S

PE

A

KE

R

Diagram

1.

The

IMPEDANCE

SELECTOR

switch l

ocated

on

the

rear of the chassis

should

be

pl

ace

d

in

the

8 or 16 ohm position

depe

ndi

ng

u

pon

the nominal im-

pedance

r

ating

of your speakers.

If

the

speake

rs have an

im

pedance

of 4 to 12

ohms, t

hrow

t

he

I

MPEDANCE

SELECTOR

sw

i

tch

to 8 ohms. If

the

speake

rs

are

rated

from

12

to 20 ohms,

throw

the

IMPEDANCE

SELECTOR

sw

itch to 16

ohms.

To operate,

the

CENTER

SPEAKER switch and

the

STEREO

SPEAKER

SELECTOR

switch l

ocated

on the front

pane

l

may

rema

in in

any

posi

ti

on

since

they

are

inoperative

in

this

app

li

ca

ti

on.

Stereo In Room A . Stereo

In

Room

B:

It

is

recommended

you con

nect

one

stereo

speaker

syst

em

at

a time.

--

SPE

A

KE

R CO

NN

EC

TI

ON

S----

-~--~

~--

-C

~EN

T,..:

E

c.;.

R

__

-'--

-'-

--'--="-'---'--

---,

L

EFT

SP

EAKER

LEFT

SPEAKER

SYSTEM A SYSTEM B

RIG

HT

SPE AKER RIGHT S

PEAK

ER

Diagram

2.

•

Remove

th

e

shorting

bars

bet

ween

the

A

and

B

SPEAKER

O

UT

PUT

ter-

minals

on

both

the

right

and

left

output

strips.

Connect

both

leads from

the

l

ef

t

spe

ak

er

in

Room

A

to

terminals A

and

COM

on

the

LEFT

SPEAKER

OUTPUT

st

rip

.

Connect

both

l

ea

ds

from

th

e

rig

ht

speaker

in

Room A

to

te

rmin

als A a

nd

C

OM

on

the

RIGHT

SPEAKER

OUTPUT

strip.

Now

connect

th

e

two

l

eads

from

the

l

eft

speaker

in

Room B

to t

er

minals B a

nd

COM

on

the

LEFT

SPEAKER

OU

TPUT

strip,

and

two

leads from the

right

speaker

in

Room B to te

rmin

als B

and

COM

on

the

RIGHT

SPEAKER

OUTPUT

str

ip

.

Th

e

short

in

g bars

on

CENTER

A

and

B

mu

st

rema

in

conn

ec

ted. R

efe

r

to

Diagram

2.

The

IM

PEDANCE

SELECTOR

sw

itch lo

ca

t

ed

on

th

e r

ea

r

of

th

e chassis

sh

ou

ld

be

placed

in

th

e 8

or

16 o

hm

pos

it

ion de

pending

upon

the

nomin

al im-

pedance

rating

of

your

speakers.

If

th

e s

peaker

s

ha

ve

an

impedance

of

4

to

12

ohms,

throw

the

IMPEDANCE

SELECTOR

switch

to

8 ohms.

If

th

e

spea

kers

have

an

in1pedance

of

12

to

20 ohms,

thr

ow

the

IMPEDANCE

SELECTOR

sw

it

ch

to

16 ohms.

To

ope

rate,

th

e

CENTER

SPEAKER

sw

it

ch

located

on

th

e

front

panel

may

remain

in

any

position since

it

is

in

ope

rativ

e

in

this application.

To

se

le

ct

stereo operation

in

Room

A,

place

th

e fro

nt

pan

el

STEREO

SPEAKER

SELEC-

TOR

swit

ch

in

the

"A" position.

To

se

l

ect

Room B,

place

th

e

STEREO

SPEAK-

ER

SELECTOR

switch in

the

"B"

position.

Stereo

In

Room

A.

Single Monophonic Speaker in Room

B:

Remove

the

shorting bars

between

A a

nd

B

SPEAKER

OU

TPUT

terminals

on

both

the

right

a

nd

left

outp

ut

strip

s.

Also

remove

th

e sho

rting

bar on

th

e

CENTER

B

CHANNEL

on

the

rig

ht

SPEAKER

OUTPUT

str

ip.

Conn

ec

t a 4

ohm, 10

watt

resistor

to

terminals B a

nd

COM

on

the

LEFT

SPEAKER

OU

T-

PUT

st

rip

, a

nd

also

con

n

ec

t a 4

ohm

, 10

watt

resis

tor

to

terminals B

and

COM

on

th

e

RIGHT

SPEAKER

O

UTPUT

s

trip

.

C

onn

ec

t bo

th

leads

from

th

e l

ef

t speaker

in

Room

A

to

t

er

minals A a

nd

COM

on

the

LEFT

SPEAKER

OUTP

UT strip. Co

nn

ec

t

both

l

ea

ds from

th

e

right

speaker

in

Room A to te

rmin

als A

and

COM

on

th

e

RIGHT

SPEAKER

OUTPUT

str

ip

. This co

mpl

etes

th

e stereo

spea

k

er

conn

ec

tions for Room.

A.

Connect

both

leads

from

your

monophonic

spea

ker

in

Room

B

to th

e two

CENTER

B terminals

on

the

ri

ght

SPEAKER

OUTPUT

strip.

Note,

th

e

CENTER

A

termina

ls

mu

st r

ema

in

strappe

d. R

efer

to

Diagram

3.

LEFT

SPEAKER

CENTER

SPEAKER

SYSTEM A

SYSTEM B

RIGHT

SPEAKER

Diagram

3.

The

IMPEDANCE

SELECTOR

switch

located

on

the

rear

of

the

chassis

should

be

placed

in

the

8

or

16

ohm

position

depending

upon

the

nominal

im-

pedance

rating

of

your

speakers.

If

tlJe speakers

have

an

impedance

of

4

to

12

ohms,

throw

the

IMPEDANCE

SELECTOR

switch

to

8 ohms.

If

the

speake

rs

have

an

impedance

of

12

to

20 ohms,

throw

the

IMPEDANCE

SELECTOR

switch

to

16 ohms.

To

ope

rate,

the

front

pane

l speaker svvitches

must

be

set

as follows:

1.

To

play

stereo

in

Room

A

only

without

oper

_

ating

the

monophonic

speak-

er

in

Room

B,

throw

the

CENTER

SPEAKER

SELECTOR

switch

to

"OFF"

and

the

STEREO

SPEAKER

SELECTOR

sw

i

tch

to

"A".

2.

To

play

stereo

in

Room A

and

monophonic

in

Room

B,

throw

the

CEN-

TER

SPEAKER

SELECTOR

switch

to "B'',

and

t

he

STEREO

SPEAKER

SE-

LECTOR

switch

to

"A".

3.

To

play

only

the

monophonic

speaker

in

Room

B,

throw

the

STEREO

SPEAKER

SELECTOR

switch

and

the

CENTER

SPEAKER

SELECTOR

swi

tch

to

"B".

St

er

eo

With

Th

ird Speaker In Room A.

No

Sp

e

ak

ers In Room B:

Remove

the

shorting

bar

strapping

the

CENTER

A terminals

on

the

LEFT

SPEAKER

OUTPUT

strip.

The

sh

orting

bars

strapping

terminals A

and

B

on

both

the

right

and

l

eft

SPEAKER

OUTPUT

strips

must

remain

connected

.

Connect

both

leads

from

the

left

speaker

in Room A

to

te

rminals A

and

COM

on

the

LEFT

SPEAKER

OUTPUT

str

i

p.

Connect

botlJ leads from

the

ri

gh

t

speaker

in

Room A

to

terminals A and.

COM

on

tJ1e

RIGHT

SPEAKER

OUTPUT

strip.

Connect

the

two

leads from

the

center

speaker

to

the

two

CENTER

SPEAKER

A

term

i

na

ls.

The

two

CENTER

B

termina

ls on

the

SPEAKER

OUT-

PUT

strip

must

remain

strapped.

Refer

to

Diagram

4.

LEFT S

PEA

K

ER

CENTER

SPEAKER

RIGHT

SPEAKER

SYS

T

EM

A

Diagram

4.

t

.J,

The

IMPEDANCE

SELECTOR

switch

located

on

the

rear

of

th

e chassis

s

hould

be

pl

aced

in

the

8

or

16

ohm

position

dep

e

nding

upon

th

e nominal im-

pedance

rating

of

yom

speakers.

If

the

speakers

have

an

impedance

of

4

to

12

ohms, tlu·ow

th

e

IMPEDANCE

SELECTOR

switch

to 8 ohms.

If

the

speakers

have

an

impeda

n

ce

of

12

to

20 ohms,

throw

the

IMPEDANCE

SELECTOR

to 16 ohms.

To

op

e

rat

e,

the

front

panel

speaker switches

mu

st be

set

as follows:

1.

To

pl

ay

stereo

in

Room A

without

th

e

us

e of

th

e

center

speake

r,

the

STEREO

SPEAKER

SELECTOR

switch

may

be

set

in

either

the

"A"

or

"B"

position as

th

e switch is

inoperat

i

ve

in

this application.

Set

th

e

CENTER

SPEAKER

SELECTOR

switch to "

OFF

".

2.

To

play

stereo

in

Room A

with

th

e use of

th

e

center

speaker,

the

STEREO

SPEAKER

SELECTOR

switch

may

be

set

in

e

ither

t

he

"A" or "B" position as

this switch is inoperative in this application,

and

th

e

CENTER

SPEAKEH. SE-

LECTOR

switch

must

be set to "A"

to

activate

th

e

ce

nt

er

chann

el.

Stereo With

Th

ird Speaker

In

Room A. Single Monophonic

Sp

e

aker

In

Room B:

Remove all shorting

ba

rs

located

on

the

re

ar

SPEAKER

OUTPUT

strip.

Connect

both

l

eads

from

th

e l

eft

speaker

in

Room A to terminals A a

nd

COM

on

th

e

LEFT

SPEAKER

OUTPUT

strip.

Conn

ect

both

leads from

the

right speaker in Room A to ter

mina

ls A

and

COM

on

the

RIGHT

SPEAKER

OU

TPUT

strip.

Connect

both

leads

from the cen

ter

speaker

in Room A to

both

A terminals

on

the

CENTER

SPEAKER

OUTPUT

strip.

This

completes

the

speaker installation for Room A.

Now

connect

both

leads from

the

single mouophonic speaker in Room B

to both B terminals

on

th

e

CENTER

SPEAKER

OUTPUT

sh·ip.

Connect

a

4 ohm, 10

watt

resistor between

te

rminals B

and

COM

on

the

LEFT

SPEAKER

OUTPUT

sh·ip

and

similarly connect

an

additional

4 ohm, 10

watt

resistor

be

tw

ee

n terminals B

and

COM

on the

RIGHT

SPEAKER

OUTPUT

strip.

Refer to

Diagram

5.

LEFT

SPEAKER

CENTER

SPEAKER

CE

NTER

SPEAKER

SYSTE

M A

SYSTE

M B

RIGHT

SPEAKER

Diagr

am 5.

l

The

IMPEDAN

CE

SELECTOR

switch

located

on

the

rear

of

the

chassis

should

be

placed

in

the

8

or

16

ohm

position

depending

upon

the

nominal

im-

pedance

rating

of

the

speakers.

If

the

speakers have

an

imp

eda

n

ce

of

4 to

12

ohms,

throw

the

IMP

E

DAN

CE

SELECTOR

switch

to 8 ohms.

If

the

speakers

have

an

impedance

of

12

to

20 ohms,

throw

the

IMPEDANCE

SELECTOR

switch

to 16 ohms.

To

operate,

the

front

panel

speake

r switches

must

be

set

as follows:

1.

To

play

two

speaker

stereo in Room A

without

operating

the

single

monophonic

speaker

in

Room B,

set

th

e

CENTER

SPEAKER

SELECTOR

l'

switch

to

"OFF"

and

the

STEREO

SPEAKER

SELCTOR

sw

it

ch

to

"A".

2.

To

play

tlu-ee

speaker

stereo

in

Room A wi

thout

operati

ng

the

single

monophonic

speaker

in Room B,

set

the

CE

1

TER

SPEAKER

SELECTOR

sw

i

tch

•

and

the

STEREO

SPEAKF.R

SELECTOR

swi

t

ch

to "A".

3.

To

play

only

the

monophonic

speaker

in Room B,

throw

the

CENTER

SPEAKER

SELECTOR

switch

a

nd

the

STEREO

SPEAKER

SELECTOR

switch to "B".

4.

To

operate

only

the

center

speake

r

in

Room

A,

set

the

CE

1

TER

SPEAK-

ER

SELECTOR

switch

to

"A"

and

the

STEREO

SPEAKER

SELECTOR

to

"B".

Stereo With Third Speaker In

Room

A. Stereo

With

Third Speaker In

Room

B:

·

Remove all shorting

bar

s

located

on

the

r

ear

SPEAKER

OUTPUT

strip.

Connect

botl1 l

eads

from

th

e le

ft

speaker

in

Room A to termfoals A

and

COM

on

the

LEFT

SPEAKER

OUTPUT

strip.

Connec

t

both

l

eads

from

the

right

speaker in

Room

A

to

terminals A

and

COM

on

the

RIGHT

SPEAKER

OUTPUT

stri

p.

Connect

both

l

eads

from

the

cen

t

er

spea

ker

to

tl1e A

ter

minals

on

the

CENTER

SPEAKER

OUTPUT

strip.

This

completes

the

speaker

con-

nections for Room A.

Connect

both

leads from

th

e

left

speaker in

Ro

om

B

to

terminals B

and

COM

on

the

LEFT

SPEAKER

OUTPUT

strip.

Connect

both

l

eads

from

the

right

speake

r in

Room

B to terminals B

and

co;v

1

on

the

RIGHT

SPEAKER

OUTPUT

str

ip.

Now

connec

t

the

cen

t

er

speaker

in

Room

B to

th

e two B t

er

-

minals on

tl1e

CE

TER

SPEAKER

OUTPUT

strip. T

hi

s completes

the

speake

r

conn

ec

ti

ons for Room B.

Refer

to

Diagram

6.

The

SPEAKER

IMPEDANCE

switch

located

on

tl1e

r

ea

r

of

the

chassis

shou

ld

be

pl

aced

in

th

e 8

or

16

ohm

position

depending

upon

the

nominal im-

pedance

ratinis

of

th

e

speake

r

s.

If

the

speakers

have

an

impedance

of

4

to

12

ohms,

throw

tl1e

U.I

PEDANCE

SELECTOR

sw

it

ch

to

8 ohms.

If

the

speake

rs

have

an

impedance

of

12

to

20 ohms,

th

row

the

IMPEDANCE

SELECTOR

sw

it

ch

to

16 ohms.

To

operate,

the

front

panel

speaker

switches

must

be

set

as follows:

1.

To

play

two

speaker

stereo

in

Room A w

ith

out

operating

any

of

the

spea

kers in

Room

B,

set

the

CENTER

SPEAKER

SELECTOR

sw

itch

to

"OFF"

anil

the

STEREO

SPEAKER

SELECTOR

switch to "A".

2.

To

play

two

speaker

stereo

in

Room B

without

operating

any

of

th

e

speakers

in

Room

A,

set

up

the

CENTER

SPEAKER

SELECTOR

switch

to

"OFF"

and

tl1e

STEREO

SPEAKER

SELECTOR

sw

i

tch

to

"B".

3.

To

play

t

lu-

ee

spea

k

er

s

ter

eo in Room A wi

th

o

ut

operating

any

of

the

speakers in Room B,

set

the

CENTER

SPEAKER

SELECTOR

sw

itch

and

the

STEREO

SPEAKER

SELECTOR

switch

to

"A".

4.

To

pl

ay

three

speaker

stereo

in

Room

B

without

op

era

ting

any

of

th

e

speakers in Room A,

set

the

CENTER

SPEAKER

SELECTOR

sw

it

ch

a

nd

the

STEREO

SPEAKER

SELECTOR

switch to "B".

5.

To

play

thr

ee

spea

k

er

stereo

in

Room A

or

two

spea

ker stereo

in

Room

B,

set

the

CE

TER

SPEAKER

SELECTOR

swit

ch

and

the

STEREO

SPEAKER

SELECTOR

sw

itch to "A".

This

enab

l

es

you

to

listen

to

three

speaker

ste

reo

in

Room

A.

To

pl

ay

two

ste

reo speakers

in

Room B,

merely

thro

w

the

STERE

O

LEFT

SPEAKER

CENTER

SPEAKER

CENTER

SPEAKER

SYSTEM

A

SYSTEM

B

RIGHT

SPEAKER

RIGHT

SPE

AK

ER

Diagram

6.

SPEAKER

SELECTOR

switch to "B'' without touching

the

other

controls.

The

reversal

of

this

app

lication is

quite

simple for if you desire to play two speaker

stereo

in

Room A

or

three speaker

ste

reo in Room

B,

set

the

CE

1

TER

SPEAK-

ER

switch

and

the

STEREO

SPEAKER

SELECTOR

switch to "B". This

ena

1

Jles

you to

li

sten to three speaker stereo in Room

B.

To

play

the

two stereo speakers

in Room A, merely throw

the

STEREO

SPEAKER

SELECTOR

switch to "A"

without touching

the

ot

h

er

control

s.

6.

To

play

three speaker stereo

in

Room A

or

s

in

gle speaker monophonic in

Room B, set

the

CENTER

SPEAKER

SELECTOR

switch

and

the

STEREO

SPEAKER

SELECTOR

switch to "A". To

play

only sin

gle

speaker monophonic

in

Room B, throw t

he

CENTER

SPEAKER

SELECTOR

sw

it

ch to "B" a

nd

allow

the

STEREO

SPEAKER

SELECTOR

switch

to

remain in

the

"A" position. The

reversal

of

th

is application applies to play a single monophonic

speaker

in Room

A and

three

stereo speakers

in

Room B.

Single

Monophonic

Speaker

In Room A. Single

Monophonic

Speaker

In

Room 8:

Remove the shorting bars on

the

CE

TER

SPEAKER

OUTPUT

strip.

Terminals A a

nd

B on the

LEFT

and

RIGHT

SPEAKER

OUTPUT

strips remain

strapped for this

type

of application.

Connect

both

leads from the single monophonic speaker

in

Room A to

both

CENTER

A terminals

on

the

LEFT

SPEAKER

OUTPUT

strip. Connect a 4

ohm, 10

watt

resistor across terminals A

and

COM

on the

LEFT

SPEAKER

OUTPUT strip.

Connect

both

leads from

the

single monophonic

spea

ker

in

Room B

to

both

CENTER

B terminals on

the

RIGHT

SPEAKER

OUTPUT

strip. Connect a 4

ohm, 10

watt

resistor across terminals A

and

CO~vl

on the

RIGHT

SPEAKER

OUTPUT

strip. Refer to Diagram 7. s

SYSTEM

A

SYSTEM

B

Diagram

7.

The

SPEAKER

IMPEDANCE

switch

located

on

the

rear

of

the

chassis

should

be

placed

in

the

8

or

16

ohm

position

depending

upon

the

nom

in

al im-

pedance

rating

of

the

speakers.

If

the

speakers

have

an

impedance

of

4 to 12

ohms,

throw

the

IMPEDANCE

SELECTOR

sw

itch

to

8

oh

ms.

If

the

speakers

have an

impedance

of

12 to

20

ohms,

throw

the

IMPEDANCE

SELECTOR

switch to

16

ohms.

To

operate,

the

front

panel

speaker switches

must

be

set as follows:

l.

To

play

the

single monophonic

speaker

in

Room

A,

set

the

CE

TER

SPEAKER

SELECTOR

switch

to

"A".

The

STEREO

SPEAKER

SELECTOR

switch

may

remain

in

any

position for

in

this application

it

is

in

operative.

2.

To

play

the

single monophonic speaker

in

Room B,

set

the

CENTER

SPEAKER

SELECTOR

switch to "B".

The

STEREO

SPEAKER

SELECTOR

switch

may

remain

in

any

position for in this

applicat

i

on

it

is inoperative.

Connecti

ng

Your

Tuner:

The

FM

output

of your Harman-Kardon stereo

tu

n

er

shou

ld

be

connected

to

the

LEFT

TUNER

HIGH

LEVEL

I

PUT

receptacle

located

on

the

rear

panel

of

the

amplifier. The AM

outpu

t should

be

connected

to

the

RIGHT

TUNER

HIGH

LEVEL

INPUT

receptacle.

The

same

method

of installation

app

li

es if you

are

using a

separate

FM

and

AM tuner.

If

you

are

using a mono-

phonic

tuner

in

conjunction

wit

h

the

A230, connect

the

tu

n

er

output

to eith

er

the

LEFT

or

RIGHT

HIGH

LEVEL

I

PUT

receptacle. Pl

ug

the

tu

n

er

AC line cord

into

one

of

the

AC convenience receptacles located

on

the

rear

panel.

Connecting

Your

Ste

r

eo

Record Player:

A stereophonic

car

b·idge uses two

output

connecting plugs.

Prov

isi

on

has

been

made

on

the

Model A230 to accommodate

any

of

the

three

types

of

phono-

graph

pickups available

on

the

market.

MAGNETIC

CARTRIDGE:

The

A230

bas

two

LO

\

i\T

LEVE

T, T

NPUT

receptacles

located

on

the

rear

panel.

Connect

the

two

outputs

of

your

stereo magnetic

ca

rt-

ridge

to

these receptacles.

The

two

PHO

O/

TAPE

equalization switches

must

be

placed

in

the

"UP"

or

PHONO

position.

CERAMIC

CARTRIDCE:

Connect

the

two

outputs

of

your

stereo ceramic

cartridge

to

the

two

PHO

TO

HI

receptacles located

on

the

rear

panel. Equalization is

automatically selected

when

connecting to this position

and

the

FUNCTIO

SELECTOR

switch is

in

the

PHONO

HI

pos

ition.

CRYSTAL

CARTRIDCE:

Connect

the

two

outputs

of

your

stereo crystal

cartridge

to

the

two

PHONO

HI

receptac

les.

Connecti

ng

A Monophonic Record Player:

A monophonic record

player

uses only

one

connecting plug.

If

you

are

using a low

output

magnetic

type

cartridge,

connect

it

to

either

of

the

LOW

f

Harman Kardon BALLAD User manual

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