Using The Pushbuttons - McIntosh C33 Owner's Manual

Using the Pushbuttons

COMPANDOR
The COMPANDOR pushbutton connects the com-
pandor to either the listen or the record program
line. The red indicator lights above the pushbutton
will show that the compandor is connected to the
LIS (listen) program line (pushbutton out) or to the
REC (record) program line (pushbutton in). These
lights will light only when the COMPANDOR knob is
turned to the EXPAND or COMPRESS positions.
REC EQUAL
This pushbutton connects the EQUALIZER FRE-
QUENCY controls to the listen or the record program
lines. When the pushbutton is out, the equalizers are
connected to the listen line. The red indicator light
above the button will be off. When the pushbutton is
in, the equalizers are connected to the record line.
The red light will be on.
REC MONITOR
This pushbutton connects the C 33 main output to
either the listen line or the record line. This pushbut-
ton does not stay in after it is pushed as the others
do. To change the switching status, push it again.
Normal operation occurs when the red indicator light
is off. The listen line is then connected to the C 33
output. When the light is on, the record line is con-
nected to the C 33 output. This switch enables you
to monitor what is being fed to the tape recorder.
To monitor the program from a tape recorder, turn
the LISTEN input selector to TAPE 1, TAPE 2, or
TAPE 3 as appropriate. To compare this program
with the signal being fed into the recorder, press the
REC MONITOR pushbutton so that the red indicator
light is on. Press the REC MONITOR button a se-
cond time to listen to the recorder output again. The
red indicator will then be off.
LF FILTER
The Low Frequency FILTER can be used only in
the listen program line. 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
FILTER 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.
HF FILTER
The High Frequency FILTER affects only the lis-
ten program line. When the pushbutton is out the fil-
ter is out of the circuit and the red indicator light is
off. When the pushbutton is in, the HF FILTER is in
the circuit and the red light will be on. The filter is ef-
fective for all frequencies above 7,000 Hz and attenu-
ates at the rate of 12 dB per octave. Use it to reduce
undesirable high frequency noise such as record
surface noise or tape hiss.
SPEAKER/OUTPUT 1 and 2
The SPEAKER/OUTPUT 1 and 2 pushbuttons can
be used to control either the output jacks 1 and 2 or
the main and remote speakers when the optional
SPEAKER CONTROL RELAY (SCR) is connected.
The SPEAKER/OUTPUT pushbuttons are not normal-
ly used to control connections to the OUTPUT 1 and
2 jacks and a SCR for speaker switching at the same
time. The operation of the output jacks and speaker
control will interfere with each other.
OUTPUT 1 AND 2
The output jacks 1 and 2 are located on the rear
panel of the C 33. Signals from output 1 and 2 are the
same as the main output. When the front pushbut-
tons are out, the listen program line is not connect-
ed to output jacks 1 and 2 and the red indicator
lights are off. When one or both pushbuttons are IN,
the listen line is connected to the corresponding
pair of output jacks and the appropriate indicator
light will be on. The C 33 output can then be switch-
ed to additional amplifiers or other devices.
Additional amplifiers can serve remote areas such
as selected living areas, workshop, or outdoor
recreational facilities. Other devices can be controll-
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