AKG CM12/8 Manual page 21

6. Operating Instructions
Setup of the CM12/8 consists of choosing the desired input-to-output gains and selecting the de­
sired output level (line or mic), using the rear panel Output Level dip switches. Each of 12 inputs
may be routed to any or all of the 8 outputs. An input may be sent to an output at one of three
levels: -6dB, 0dB, and +3dB. Each output can be adjusted in 1dB increments from +10dB to -68dB,
plus Off. If multiple setups are needed, the CM12/8 has 9 nonvolatile memories. All memories may
be recalled either from the front panel LCD menu of the CM12/8 or from this control panel. Memo­
ries 1-6 can be recalled using contact closures between any of the Memory Recall pins and ground,
on the rear panel connector.
1) Determine which inputs (and/or noise) will send to each output, and program the appropriate
send gain from each input.
2) Adjust the output level to achieve the desired signal level. Both the Up and Down buttons are
push and hold (i.e. they will continue to increment or decrement gain if held).
3) After setting the input and output levels, the setup may be saved to one of the 9 nonvolatile
memories. Each time power is applied to the CM12/8, it loads the setup from Memory 1. As a
result, Memory 1 should be used to store the setup that is desired at power-up.
4) If other matrix setups will be used, they may be stored in Memories 2-9. These can then be
recalled as needed from the front panel LCD menu of the CM12/8 or from the LecNet control
panel. Memories 1-6 can be recalled using contact closures between any of the Memory Recall
pins and ground, on the rear panel connector.
5) If the CM12/8 outputs are driving tape recorders or other devices with microphone level inputs,
the Output Level dip switches should be set to the mic mode (dip switch down). This reduces the
output level by 40dB relative to the line level signal.
6) More than 12 inputs may be used by combining CM12/8s, but only 8 outputs are ever available.
If combining CM12/8s is needed, simply connect the Audio Link Out from the second CM12/8 to
the Audio Link In of the first CM12/8 using the optionally available 9-pin cable.
The system is now ready for use.
Resetting the CM12/8 to Factory Defaults
Note that the CM12/8 may be reset to factory default conditions by simultaneously pressing the Up
and Down buttons while turning on the power. The default conditions are as follows:
1) All input gains in all memories are set to Off.
2) All output gains in all memories are set to 0dB.
3) LCD display contrast is set to the factory default.
4) Operational mode is set to Local.
Any setups stored in memory are, of course, lost as a result of the reset.
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CM12/8