McIntosh C20 - Specifikace stáhnout pdf (Strana 6)

BALANCE

LEFT

RIGHT

This control balances the C20 for unequal pro-

gram sources.

LEFT . . . turning the control to the left slowly

reduces the right channel to no output and

accents the left channel.

RIGHT . . . turning the control to the right slowly

reduces the left channel to no output and accents

the right channel.

HF CUTOFF FILTER

9KC

FLAT 5KC

This three-position switch minimizes surface noise

when reproducing old, badly worn recordings. Its posi-

tions are as follows:

FLAT... filter disconnected.

9KC .. . rolls off response sharply starting at 9KC.

5KC . . . rolls off response sharply starting at 5KC.

LOUDNESS

L0UDNESS

2 3

FLAT

Music reproduced at very low volume loses its

bass and treble due to a selective shift in sensitivity

of human hearing. This effect is known as the Fletcher-

Munson hearing characteristics. (See page 15, Figure

13.) The LOUDNESS control corrects for this effect.

With the RUMBLE FILTER button pushed to the

IN position, low-frequency rumble noise below 60 cps

created by a turntable or changer and undesirable

acoustically coupled feedback are reduced.

TAPE JACK

TAPE

JACK

This pushbutton controls the signal direction to

or from the front panel telephone jacks.

IN-PLAYBACK . . . TAPE input is switched from

rear tape jacks to front panel telephone jacks.

Any program originating from a portable machine

connected to the C20 can be heard by rotating

the INPUT selector to the TAPE position.

OUT-RECORD . . . connect signals from the rear

tape jacks to the INPUT SELECTOR TAPE posi-

tion. Any program picked up by the C20 is con-

nected to the portable machine for recording,

TAPE COMPARE

TAPE

COMPARE

IN-TAPE

This pushbutton makes it possible to instantane-

ously compare the recorded material with the source

signal. TAPE COMPARE jacks are provided on the back

panel to accept a signal- from a tape recorder with a

monitor head and preamplifier. When the TAPE COM-

PARE pushbutton is in the out position, the program

source is fed through the power amplifiers and the

loudspeakers. When the TAPE COMPARE pushbutton

is in the IN position (depressed), the signal source

becomes the monitored program from the recorded tape

and is fed through the power amplifiers and loud-

speakers.

RUMBLE FILTER

IMPORTANT

When the TAPE COMPARE pushbutton is de-

pressed, signal from any other source will

not be heard from the loudspeakers. When

not in use, make sure the pushbutton is in

the out position.

BALANCE

RUMBLE

FILTER

IN-ON

IN-PLAYBACK

OUT-RECORD

1 2 3 4 5 6 7 8 9 10 11 ... 19 20

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