Using The Front Panel Controls - McIntosh C32 Owner's Manual

Using the Front Panel Controls

LISTEN and RECORD Input Selector Switches
The control at the left top of the front panel selects the
input for the LISTEN program line. The left bottom control
selects the input for the RECORD program line. Both op-
erate in the same manner.
MODE SELECTOR
The MODE SELECTOR facilitates the accurate adjustment
of a stereo system for differences caused by room acous-
tics, loudspeaker placement and the other components
used in the system.
The MODE SELECTOR switch affects the program on
the LISTEN program line only and connects the program
to the loudspeaker in seven ways:
L to L and R: Connects the left input to both loudspeakers.
R to L and R: Connects the right input to both loud-
speakers.
STEREO REV: Connects the left input to the right loud-
speaker and the right input to the left loudspeaker.
STEREO: Connects the left input to the left loudspeaker
and the right input to the right loudspeaker.
MONO (L + R): Adds the left and right inputs together and
connects to both loudspeakers.
L + R to L: Connects the left plus right program to the
left loudspeaker only.
L - R to R: Connects the left plus right program to the
right loudspeaker only.
EQUALIZER FREQUENCY Controls
Each of five EQUALIZER FREQUENCY controls raises or
lowers a band of frequencies centered on the frequency
marked above the control. Both left and right channels of
the LISTEN program line are affected. The center, or flat,
position of the control has a detent for easy reference.
Use the EQUALIZER FREQUENCY controls to modify the
sound and balance of material. Here are some suggestions
from which to start:
Problem
Bass too weak
Male vocalist needs reinforcing
Female reinforcing
Hum on program
Violins, trumpets dull
Drum "brushes" not audible
To prevent interference from subsonic and supersonic
signals, the C 32 includes subsonic and supersonic filters
that attenuate signals below 20 Hz and above 20,000 Hz.
They are bypassed when the EQ OUT pushbutton is pressed
IN which extends the frequency response to 10 Hz to
100,000 Hz.
BALANCE and LOUDNESS
The BALANCE and LOUDNESS controls are concentric.
The BALANCE control (large outer knob) adjusts for equal
volume of either the left or right channels. The volume of
the channels can be varied relative to each other without
affecting their combined volume.
LEFT . . . turning the control to the left accents the left
channel by reducing the right channel output.
RIGHT . . . turning the control to the right accents the
right channel by reducing the left channel output.
LOUDNESS
The LOUDNESS control (small center knob) increases
both bass and treble frequencies of both channels as it is
turned clockwise. Adjustment of the LOUDNESS control
allows life-like frequency balance when playing music
softly. Its contour is the same, regardless of the position
of the volume control. This contour is accurately modelled
after the family of "Equal Loudness" curves identified by
Fletcher and Munson.
8
Equalizer Correction
Raise 30 and/or 150
Raise 150
Raise 500
Reduce 30 and LF FILTER
Raise 1500
Raise 10 K