McIntosh C34V Owner's Manual page 16

G. COMPANDOR
The COMPANDOR pushbutton switches the
COMPANDOR circuits between the LISTEN (out
position) and RECORD (in position) program lines or
disconnects the circuit entirely. A red light emitting
diode (LED) illuminates to indicate when the circuit
is connected to either Listen or RECord. When
neither is lit, the COMPANDOR selector knob is
turned to the OFF position.
H. RECord EQUAL
The EQUALIZER FREQUENCY pushbutton con-
nects these controls to the LISTEN or RECORD pro-
gram lines. When the pushbutton is out, the
EQUALIZER FREQUENCY controls are connected to
the LISTEN line, and the red LED indicator above
the button is off. When the pushbutton is in, they
are connected to the RECORD line. The red LED in-
dicator will be on. The normal position is with the
pushbutton out.
1. RECord MONITOR
To monitor while recording with a three-head
tape recorder, set the LISTEN input selector to the
proper TAPE position. The RECord MONITOR LED
indicator is off when listening to the program
recorded on the tape and on when listening to the
program source being fed to the tape recorder.
J. LF FILTER
The Low Frequency FILTER is in the LISTEN pro-
gram line only. When the pushbutton is out, the
filter is out of the circuit and the red indicator light
will be off. When the pushbutton is in, the LF FIL-
TER is in the circuit and the red light will be on.
The filter is effective for all frequencies below 50 Hz
and attenuates at the rate of 12 dB per octave. Use
it to reduce undesirable low frequency noise such
as rumble or mechanical feedback.
K. HF FILTER
The High Frequency FILTER is in the LISTEN pro-
gram line only. When the pushbutton is out, the HF
FILTER is out of the circuit and the red indicator
light is off. When the pushbutton is in, the HF FIL-
TER is in the circuit and the red light is on. The
filter is effective for all frequencies above 7,000 Hz
and attenuates at the rate of 12 dB per octave. Use
it to reduce undesirable high frequency noise such
as record surface noise or tape hiss.
L. SPEAKER/OUTPUT 1 and 2
The SPEAKER/OUTPUT 1 and 2 pushbuttons can
be used to switch on or off either the AUDIO OUT-
PUT SWITCHED 1 and 2 jacks or the main and
14 PUSHBUTTONS
remote speakers when an optional Speaker Control
Relay (SCR 2) is used.
The SWITCHED 1 and 2 jacks on the rear panel
of the C 34V have the same program as the MAIN
OUTPUT. When one or both SPEAKER/OUTPUT
pushbuttons are IN, the LISTEN program line is con-
nected to the corresponding pair of OUTPUT jacks
and the LED indicator is turned on. Program to
other devices can be controlled such as rear chan-
nel delay, reverberation, etc. Example: connect the
SWITCHED 1 jack to the input of a reverberation
device and the output of the reverberation device
to the input C 34V MONITOR AMPLIFIER and the
output of the MONITOR AMPLIFIER to a set of rear
loudspeakers. (The monitor amplifier switch must be
in the EXTERNAL position.) Rear channel reverbera-
tion can then be switched on or off by the SPEAKER
OUTPUT 1 pushbutton without the need for an ad-
ditional amplifier.
N. POWER ON
The red pushbutton turns the C 34V on or off.
When the power is on, the panel illuminates and
the red light above this pushbutton will go on. The
turntable can also be used as a power switch. See
page 10.