McIntosh C32 Owner's Manual page 12

A. To reduce noise (hum, hiss or scratch)
1. Select the desired program source with LISTEN front
panel selector switch.
2. Switch top panel SPEED control to NORM.
3. Increase VOLUME control during a quiet passage of
the program until noise is clearly audible.
4. Rotate EXPANDER control clockwise until the noise
is acceptably reduced.
5. Adjust the LEVEL MATCH controls.
B. To improve the "live" sound of recorded or transmitted
program material:
1. Select LISTEN input.
2. Switch top panel SPEED control to NORM.
3. Increase VOLUME to satisfactory level.
4. Rotate the EXPANDER control clockwise until the
dynamic range of the music, the ratio of loud to soft
is correct for you.
5. Adjust the LEVEL MATCH controls as described pre-
viously.
By using the EXPANDER controls in conjunction with the
EQUALIZER FREQUENCY controls, the C 32 may be used
to de-emphasize and decompress disc and tape program
material.
HEADPHONE Jacks
The stereo HEADPHONE jacks are driven by the built-in
MONITOR AMPLIFIER. Either LISTEN or RECORD programs
can be heard depending on the position of the INPUT
switch on the MONITOR AMPLIFIER located on the top
panel. The LEFT and RIGHT GAIN controls regulate head-
phone volume:
A. In conjunction with the main front panel VOLUME con-
trol if the top panel INPUT switch is in LISTEN position,
B. Exclusively if the INPUT switch is in RECORD position.
The upper HEADPHONE jack is used to feed electrostatic
headphones. It is fed directly by the MONITOR AMPLIFIER.
Electrostatic headphones require more power than dynamic
type headphones as a rule. The lower headphone jack is
used to feed low impedance dynamic headphones. It is
fed by the MONITOR AMPLIFIER through a matching net-
work.
MONITOR AMPLIFIER
Although its primary purpose is to drive the headphone
jacks, the MONITOR AMPLIFIER may additionally be used:
1. To listen, on speakers, to any of the inputs connected to
the C 32 without the use of a separate stereo power
amplifier. Stereo loudspeakers can be connected to the
rear panel 8 ohm terminals. The program source for the
MONITOR AMPLIFIER may be selected from either the
LISTEN program line or the RECORD program line by
means of the top panel INPUT switch. Beside the INPUT
switch are LEFT GAIN and RIGHT GAIN controls. They
control the volume of the respective channels of the
MONITOR AMPLIFIER.
2. To drive a 600 ohm unbalanced line connected to
OUTPUT LINE jacks.
3. The extensive flexibility of the C 32 permits many other
possible uses of the MONITOR AMPLIFIER such as
adding a reverberation device, time delay or "ambience"
accessory unit, discrete 4-channel, etc.
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