I would like to control an Allen & Heath CQ12T.
I believe the CQ series use NPRN.
I’ve tried to make sense of it but it’s completely out of my skill level.
I’d like to use faders to control input channel volumes, and mute/unmute them.
Can anyone help please?
Below is the documentation for the midi interface on the CQ series
A&H MIDI Control V2.20 Help_Iss1.pdf
CQ_MIDI_Protocol_V1_2_0_iss4.pdf
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I put together a small guide; hopefully this helps you control the faders.
- Channel → MIDI channel (0–15)
- Command → Should be
176 for Control Change on channel 1, 177 for channel 2, etc.
- Parameter 1 → Controller number (this selects which fader or function you’re controlling)
| Field |
Value |
Explanation |
| Channel |
0 |
Channel 1 is MIDI channel 0 (0–15) |
| Command |
176 |
176 = 0xB0 → Control Change on ch. 1 |
| Parameter 1 (cc) |
0 |
first input fader, 1 is the second input fader |
| Parameter 2 (val) |
127 |
Max volume (set to desired level 0–127) |
