Harman Kardon TA260 Owners Manual - Page 9

throw

the

MAGNETIC

INPUT

switch

to

position

1

for

phono

and

to

position

2

to

play

back

your

tapes.

NOTE

that

operation

of

the

MAGNETIC

INPUT

switch

may

require

re-

setting

of

the

EQUALIZATION

switch

as

explained

below.

Equalization

Switch:

In

order

to

achieve

good

reproduction

of

the

wide

range

of

frequencies

in

music

and

to

make

necessary

adjustments

for

the

limitations

of

the

recording

technique,

record

manufacturers

have

found

it

necessary

to

modify

the

actual

frequency

response

of

the

music

while

it

is

being

recorded.

Thus,

to

avoid

over

-

cutting

and

consequent

distortion,

a

measured

and

deliberate

reduction

is

effected

in

low

frequency

response

by

selecting

a

"turnover

frequency"

and

by

recording

attenuated

response

below

that

point.

To

assure

optimum

signal

to

noise

at

the

high

frequency

end

when

the

record

is

played

at

home,

the

highs

are

deliberately

exaggerated

during

the

recording

process.

A

measured

and

deliberate

boost

is

effected

above

a

certain

frequency.

This

combination

of

deliberate

exaggeration

at

the

low

and

high

ends

of

the

frequency

response

can

be

expressed

in

a

record-

ing

curve.

When

the

record

is

played

a

mirror

image

of

that

curve

should

be

available

so

that

the

ideal

"flat"

response

may

be

achieved.

The

front

panel

EQUALIZATION

switch

selects

the

proper

equalization

for

record

and

tape

play

back.

When

playing

records

with

a

magnetic

cartridge

throw

this

switch

to

the

RIAA

position.

When

playing

tapes

throw

the

switch

to

NARTB.

The

EQUALIZATION

switch

must

always

be

properly

set

in

order

to

achieve

best

tone

balance.

Scratch

Filter:

In

the

event

of

objectionable

high

frequency

record

scratch

throw

the

SCRATCH

FILTER

switch

to

ON.

This

will

roll

off

the

higher

frequencies

to

clear

up

your

older

records.

Rumble

Filter

Switch:

At

times,

record

changers,

turntables

and

even some

FM

stations

produce

an

objectionable

low

frequency

signal

that

is

strong

enough

to

be

introduced

into

the

playback

system.

This

is

known

as

rumble

and

can

be

eliminated

by

the

special

low

frequency

roll

off

switch

on

the

front

panel.

Whenever

rumble

is

encountered

throw

the

RUMBLE

FILTER

to

ON.

Power

On/Off

Switch:

Depress

the

red

push

button

power

ON/OFF

switch

to

turn

the

set

on.

Depress

the

button

again

to

turn

the

set

off.

Speaker

Phasing

Switch:

When

more

than

one

speaker

is

used

in

any

music

reproducing

system

they

must

be

connected

in

a

manner

as

to

aid

each

other,

rather

than

to

work

against

one

another.

Since

it

is

necessary

to

use

two

speakers

for

stereophonic

reproduc-

tion,

this

caution

appplies.

Checking

for

proper

phase,

and

correcting

if

necessary,

is

quite

simple.

Place

the

MODE

-BLEND

control

in

the

MONOPHONIC

position

and

play

a

monophonic

record

with

readily

apparent

bass

tones.

Listen

carefully

to

the

strength

and

clarity

of

the

bass

while

moving

the

speaker

PHASING

switch,

located

on

the

chassis,

back

and

forth

between

0°

and

180°.

Select

the

position

on

the

PHASING

switch

which

gives

maximum

bass

reproduction.

Once

the

phase

is

established

the

PHASING

switch

may

remain

in

the

set

position

or

may

be

switched

as

preferred

to

test

for

proper

phasing

at

any

time.

Improper

speaker

phasing

will

create

what

is

commonly

termed

as

a

"hole

in

the

middle"

effect

for

Harman Kardon TA260 Owners Manual - Page 9

Equalization, Switch, Scratch, Rumble, Filter, Power, On/Off, Speaker, Phasing

Page 9 highlights