Crest Audio CPM 2462, Operating Manual, Page: 6 / 36

Reading the diagram from left to right (standard signal flow) you’ll find: a mic input, line input, input
pad switch, polarity switch and gain control. From there the signal passes through the insert jack
and through the low, mid and high EQ’s. The mid EQ center frequency is adjustable from 40 Hz to
1.2 kHz. The signal for the PFL is taken at this point in the signal chain when the PFL switch is
selected for the channel. The signal also continues on to the fader, mute switch, direct
out and pan controls. Finally, the signal is sent to the various buses as determined by the assign
switches. Channels 1 and 2 can send signal to the following buses: Main(L/R), Groups 1-4,
Aux 1-6, and PFL.
Channels 3-8 are identical to Channels 1 and 2 with the following exceptions: the addition of the low
cut filter (switchable) and the deletion of the pad and polarity switches. If you are mixing a device
that may need a switchable pad and/or polarity, such as a bass drum, it is recommended to place
them on Channels 1 and 2. Also, the mid EQ center frequency is adjustable from 100 Hz to 3 kHz.
The block diagram below is typical of Channels 3-8 and reflects the differences mentioned above.
Channels 3-8 can send signal to the following buses: Main(L/R), Groups 1-4, Aux 1-6, and PFL/Solo.
Channels 9-16 are designed to accommodate stereo line inputs. These channels eliminate the
tape in, tape input select switch, mid-sweep control of the EQ, direct out and insert jacks. Added to
Channels 9-16 are a line input select switch, separate line and mic level controls and a stereo pair
of 1/4" input jacks. The block diagram below is typical of Channels 9-14. Channels 9-14 can send
signal to the following buses: Main(L/R), Groups 1-6, Aux 1-6, and PFL.
6
Input Channel