ALLEN & HEATH CQ-20B User Manual

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User Guide V1.1.0 Issue 1
7. How to…
Use Gain Assistant
Gain Assistant can be used on any input channel which has a preamp, when the
Input Source is set to Analogue.
1.
Connect a source (e.g. Microphone) to input socket 1-
10 (CQ-12T) or 1-16 (CQ-18T, CQ-20B).
2.
Go to CONFIG / INPUTS and select that input socket.
Settings will appear in the bottom half of the screen.
3.
Ensure the Input Source is set to Analogue.
4.
If using a source that requires 48V phantom power,
such as a condenser microphone or active DI box,
ensure this is turned on.
5.
In the Gain Assistant section, use the Auto Set
button to begin setting preamp gain.
6.
Make noise into the connected microphone or with
the connected instrument/source to let the Gain
Assistant know what the typical signal level will be.

ALLEN & HEATH CQ-20B Specifications

General

Frequency range	20 - 20000 Hz
Channels quantity	24 channels
Supported sample rates	96 kHz
Digital sound processing	- bit
Nominal input level	17 dBu
Output impedance	75 Ω
Total Harmonic Distortion (THD)	0.002 %
Built-in display	-
Card reader integrated	Yes
Compatible memory cards	SD, SDHC
Maximum memory card size	32 GB
Bluetooth version	4.1
XLR out	8
RJ-45 ports quantity	1
USB 2.0 ports quantity	2
Number of microphone inputs	20
Rack capacity	19U
USB connector type	USB Type-A, USB Type-B
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (typical)	- W

Weight and Dimensions

Depth	154 mm
Width	372 mm
Height	134 mm
Weight	2600 g
Package type	Box
Package depth	260 mm
Package width	450 mm
Package height	250 mm
Package weight	3300 g