Crest Audio CPM 2462 Operating Manual page 16

CHANNEL 9 — 16 AND 17 — 24 (BACK PANEL CONNECTIONS)
37. MICROPHONE INPUT
The MICROPHONE INPUT is an XLR balanced input for a low impedance
microphone. Pin 2 is the positive input.
38. STEREO LINE INPUT
These two 1/4" (TS) unbalanced line inputs LEFT/MONO and RIGHT are for
high level, line signals. If there is no 1/4" jack plugged into the RIGHT input,
the signal from the LEFT/MONO jack is applied to both L and R inputs. On
the stereo Channels 15 and 16, if selected, the LINE INPUT signals are sent
directly to the L and R sub-channels.
CHANNEL 9 — 16 AND 17 — 24 (FRONT PANEL FEATURES)
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(All remaining controls and features are identical with those on Channels 1-8.)
CHANNEL 15 AND 16 (STEREO CHANNELS)
These two channels are full stereo channels with two separate L and R sub-channels
each. All controls and functions are identical with those on Channels 9 — 14 with the
following exceptions:
43. AUX 1/2
AUX 1 adjusts the level of the channel's LEFT pre-fader signal that
is added to AUX 1 mix. AUX 2 adjusts the level of the channel's RIGHT pre-
fader signal that is added to AUX 2 mix. Unity gain at the center detent
position and +10 dB of gain in maximum.
GAIN
The GAIN CONTROL varies the gain of the microphone input to allow a
wider input dynamic range. The gain adjustment range is +10 dB to
+50 dB. Proper adjustment of the mic gain will maximize the signal to
noise ratio. It can be set by depressing the PFL switch (35) and adjusting
for a 0 dB level at the R meter.
CHANNEL 17 — 24 ASSIGNMENT SWITCH
This switch determines how the stereo line inputs are routed. In the out
position, the signal is routed to sub-group 5/6. When the switch is
depressed, the mic input on the corresponding input channel (9 - 16) is
muted and the line signal is routed through that channel. On channels 9 -
14, the signal is summed mono. On channels 15 and 16, the stereo
signal is maintained.
LINE INPUT LEVEL
The line input level control adjusts the stereo line input from (-) infinity to
unity gain at the center detent, and to +6 dB at the full clockwise position.
When assigned to group 5/6, this control is the input mix
control. When routed through the corresponding channel
strip, this control serves as the input trim control.
MID (dB) EQ
This bandpass (boost/cut) active tone control varies the
mid-frequency LEVELS +/-15 dB with a fixed center
FREQUENCY of 800 Hz.
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