Manual Marantz Model 4270 (page 12 of 24) (English)

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DIMENSION

The

DIMENSION

control

is operative

only

when

the

MODE

Switch is set to the

VARI-MATRIX

position. This control optimizes

the

4-channel

VARI

-MATRIX

effect.

SO DECODER

With the MODE Switch on

DECODER, any

rear

input

signals

the

4270

are

internally

dis-

connected. The rear channel

outputs

are, in-

stead, derived

from

front

channel signals which

have been processed by the plug-in decoder. The

characteristics

these derived rear channel

out

puts are determined by the

type

plug-in

decoder.

Use SO DECODER position

only

with

an optional

plug-in decoder installed.

Without

this

opt

ional

decoder, there

will

be no

output

when the

MODE

Switch is set

the

SO DECODER position.

BALANCE

CONTROLS

The Model

4270

has three

BALANCE

controls:

FRONT

L-R,

REAR

L-R and

FRONT-REAR.

The

FRONT

L-R slide knob adjusts the balance

between the

front

channels. The

REAR

L-R

slide

knob

adjusts the balance between

the

rear

channels. The

FRONT-REAR

slide knob adjusts

the balance between the rear and

front

pairs

channels. Balance adjustments

must

be carried

out

the

MONO mode. To balance the

front

channels,

first

set

the

FRONT-REAR

control

all

the way

the

FRONT

silence the rear speakers

while you adjust the

FRONT

L-R

BALANCE

control. To balance the rear channels, move the

FRONT-REAR

control

all the way

REAR,

and then adjust

REAR

L-R

BALANCE.

Now

you

are ready

adjust the

FRONT-REAR

control

for

the most pleasing overall balance.

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Figure

9. Front

Panel

Controls

and

Jacks

SELECTOR SWITCH

The SELECTOR Switch selects the program

source

for

listening or recording. The switch

can select any

six sources:

AM,

FM, PHONO,

CD-4/

AUX,

TAPE

1 and

TAPE

BASS,

MID

AND

TREBLE

CONTROLS

These controls are used

adjust

the

tonal

balance

program material

suit

your

indi-

vidual listen ing preference. The

bass,

midrange

and treble responses are adjusted by dual-con-

centric,

friction

-coupled controls. With BASS,

MID

and

TREBLE

controls

set at the center posi-

tion,

frequency response

the

amplifier

becomes

flat.

The smaller (outer)

knob

adjusts the response

the

front

audio channels, while the larger (inner)

knob adjusts the rear audio channels.

Turn the knobs clockwise

boost, or counter-

clockwise

attenuate its respective frequency

range.

MON

ITOR

SWITCH FOR TAPE

1/TAPE

This switch

assigns

the TAPE/SOURCE

MONI·

TOR Switch

either TAPE 1 or TAPE 2.

MONITOR

SWITCH FOR TAPE/SOURCE

When

the

MONITOR

(TAPE/SOURCE) Switch is

placed in

"TAPE"

(in) position, the signals con-

nected

the tape

input

jacks (as selected by the

MONITOR

TAPE 1, 2 Switch)

will

be played

back.

To play

the

tape recorder connected

the

TAPE

MONITOR

1 or TAPE

MONITOR

2 jacks,

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Marantz Model 4270 Manual

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