ALLEN & HEATH CQ-20B User Manual

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User Guide V1.1.0 Issue 1
INPUT / Preamp
Input Source – Select Analogue to source the channel from the analogue sockets
or select USB/SD to source from USB drive and SD card.
The current source for this input channel is displayed below.
 When playing back from SD the source will be SD, otherwise it will be USB-B.
Gain Assistant – Touch Auto Set and generate noise in the microphone or with the
connected instrument/device to automatically set preamp gain based on the level
of signal received at the input. Switch on Auto Gain to automatically reduce the
preamp gain and avoid clipping if high levels are detected.
Phantom Power – Touch and hold to activate +48V on the XLR input (Required for
condenser microphones and active DI boxes).
 Phantom Power is only provided via an XLR connection. It is not sent to the ¼” TRS
Jack connection of a Combi socket.

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