ALLEN & HEATH CQ-20B User Manual

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User Guide V1.1.0 Issue 1
1.
Go to CONFIG / OUTPUTS and select the Output
socket where Feedback Assistant (FBA) is needed.
Settings will appear in the bottom half of the
screen.
2.
Set EQ Type to PEQ & FBA if it is not already.
3.
Go to PROCESSING / OUTPUTS.
4.
Select the Output channel, then select the
channel’s FBA to show details and controls.
5.
At the bottom left of the screen, select the DETECT
tab (if not already selected)
6.
Set the filter Mode to Fixed. This will mean any
detected feedback frequencies will have a fixed
filter applied (which will remain until manually
deleted).
7.
Disable HOLD to start detecting feedback
frequencies; Enable HOLD to pause detection at
any time
8.
Enable the RTA (Real Time Analyser) to show the
frequency content of the selected Output on the
graph.

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