CQ-20B.org

Allen & Heath CQ-20B

based on MIDI Protocol V1.2 Issue 2

The CQ uses MIDI Channel 1 for all control messaging.

MIDI setup

The CQ transmits MIDI messages when any changes are made on the unit (or using a connected app ) to any parameters that include NRPN MIDI Control. This means the raw MIDI output from the CQ can be recorded and then ‘played back’ to the CQ later to automate level and mute control.

Available Controls

Scene change

Soft Keys

Mutes

Levels

Panning/Balance

Getting values

Reference Tables

Decimal, HEX, Note conversions

Soft Key Note and Hex values

Mutes Parameter Numbers

Level Parameter Numbers — Inputs and FX to Outputs and FX

Level Parameter Numbers — Outputs, FX unit input and DCAs

Pan Balance Parameter Numbers — Inputs and FX to Main LR and Outputs

Further

• CQ-20B Documents
• CQ MIDI Protocol V1.2.0 (pdf)
• A&H MIDI Control software