Front Panel Controls 11 - McIntosh C34V Owner's Manual

Fold out the photographs on the inside of the back
cover. It will assist you in locating the controls and
pushbuttons. The letters on the photographs refer to
the paragraphs that follow.
Before attempting to operate your C 34V Audio/Video
Control Center, familiarize yourself with the controls
and what they do.
A. LISTEN AND RECORD SELECTOR SWITCHES
The LISTEN Input selector switch is located at the
upper left on the front panel. It is used to select the
input for the LISTEN program line. The selected pro-
gram source is fed to the MAIN output.
The RECORD input selector switch is located at
the lower left on the front panel. It is used to select
the input for the RECORD program line. The
selected program source is fed to the TAPE 1, TAPE
2, and TAPE 3 outputs. The RECORD and LISTEN
switches operate totally independently of each other
and without any interference.
B. MODE SELECTOR
The MODE SELECTOR allows you to identify each
stereo channel, create monophonic program
material, and direct program material to one chan-
nel or the other. The MODE SELECTOR operates
only in the LISTEN program line.
It controls the program in seven ways:
L TO L&R: Connects the left input to both left and
right output circuits.
R TO L&R: Connects the right input to both left
and right output circuits.
STEREO REV: Connects the left input to the right
output circuit and the right input to the left output
circuit.
STEREO: Connects the left input to the left output
circuit and the right input to the right output circuit.
Use the STEREO position for normal listening.
MONO (L + R): Adds the left to the right input
and connects the composite to both left and right
output circuits.
L + R TO L: Connects the left plus right program
to the left output circuit only.
L + R TO R: Connects the left plus right program
to the right output circuit only.
C. EQUALIZER FREQUENCY CONTROLS
Each of five EQUALIZER FREQUENCY controls
raises or lowers the amplitude of a band of frequen-
cies centered on the frequency marked above the
control. Both left and right channels are affected.
The center, or flat position of the control has a de-
tent for easy reference. In the center or detent posi-
tion, the entire circuit for that control is removed

FRONT PANEL CONTROLS 11

from the program circuit by grounding the control
electronically. The result is the "straight wire with
gain" or the flexibility of complete musical balanc-
ing to your taste.
Use the EQUALIZER FREQUENCY controls to
modify the sound and balance of program material.
Here are some suggestions:
Adjustment to
Make deep bass louder
Make all bass louder
Reinforce voices
Hum on program
Brighten violins
and trumpets
Emphasize cymbals
The EQUALIZER FREQUENCY controls can be
switched to either the LISTEN or RECORD program
lines by the RECORD EQUALIZER pushbutton.
Because the equalizer is in the circuit after the COM-
PANDOR, use of the equalizer will not affect the per-
formance characteristics of the COMPANDOR.
D. BALANCE AND LOUDNESS
The BALANCE and LOUDNESS controls are con-
centric. The BALANCE control (large outer knob)
adjusts the volume of the channels relative to each
other.
L-left...turning the control to the left accents the
left channel by reducing the right channel output.
R-right...turning the control to the right accents
the right channel by reducing the left channel
output.
E. LOUDNESS
The LOUDNESS control (small center knob) pro-
vides frequency response contoured to compensate
for the behavior of the human ear at lower listening
levels. This contour is accurately modeled after the
family of "equal loudness" curves identified by Flet-
cher and Munson. At the fully counterclockwise
detented FLAT position, the loudness contour is
electrically flat. As the control is turned clockwise,
both bass and treble frequencies increase in the
correct proportion. The contour is not affected by
different settings of the VOLUME control. After set-
ting the VOLUME control for the desired listening
level, adjust the LOUDNESS control for the prefer-
red compensation.
F. COMPANDOR SYSTEM:
The Mclntosh COMPANDOR System can be used
to control the dynamic range of program material. It
can be used in two different ways: to function as an
__ Equalizer Correction
Raise 30
Raise 30 and 150
Lower 150 and raise 500
Reduce 30 and 150
Raise 1500
Raise 10 K