ALLEN & HEATH CQ-20B User Manual

 45
User Guide V1.1.0 Issue 1
Detect and add Live filters to an Output during a show or event
1.
Follow the previous How To guide to add Fixed
filters during setup whenever possible. This gives
the best starting point for the FBA.
2.
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.
3.
Set EQ Type to PEQ & FBA if it is not already.
4.
Go to PROCESSING / OUTPUTS.
5.
Select the Output channel, then select the
channel’s FBA to show details and controls.
6.
At the bottom left of the screen, select the DETECT
tab (if not already selected)
7.
Set the filter Mode to Live. This will mean any
detected feedback frequencies will have a live filter
applied, which will immediately begin to recover.
8.
Set the rate of recovery for all Live filters. This can
be adjusted at any time to speed up or slow down
(or even pause) recovery. It does not affect fixed
filters.

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