ALLEN & HEATH CQ-20B User Manual

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User Guide V1.1.0 Issue 1
OUTPUT / Compressor
A Compressor is used to control and reduce the dynamic range of the signal.
RMS/Peak – Compression is either triggered by RMS (short average) or Peak
(instant) signal level.
Hard/Soft Knee – With a hard knee, compression begins to take effect only when
the threshold is reached. With a soft knee, the compression begins to take effect
earlier but in a more gradual way.
Attack – Adjust the time it takes for compression to take effect once the signal
has reached the threshold. Set a longer time to allow transients through and
compress only the body of the sound, set a shorter time to flatten the signal and
tame peaks.
Release – Adjust the time that it takes for the compressor to stop compressing
after signal has fallen below the threshold.

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