ALLEN & HEATH CQ-20B User Manual

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User Guide V1.1.0 Issue 1
4. Connections
Power
CQ-12T, CQ-18T
12VDC, 5A, centre positive connection and clip. Use supplied external switching
power supply with IEC connection to mains.
CQ-20B
IEC connection with internal switch mode power supply.
1. Mic/Line Inputs
Mono Inputs 1-5 (CQ-12T) and 1-8 (CQ-18T, CQ-20B)
Balanced XLR (1-Ground, 2-Hot/Positive, 3-Cold/Negative),
recallable preamp with +60dB gain and phantom power.
Mono Inputs 6-10 (CQ-12T) and 9-16 (CQ-18T, CQ-20B)
Balanced XLR (1-Ground, 2-Hot/Positive, 3-Cold/Negative)
Or ¼” TRS Jack (Tip-Hot/Positive, Ring-Cold/Negative, Sleeve-
Ground)
Mono Inputs 15-16 (CQ-20B) - switched to Hi-Z mode
¼” TS Jack (Tip-Hot/Positive, Sleeve-Ground)
Mono inputs include recallable preamp with +60dB gain, fixed -20dB pad on TRS
input, phantom power supplied to XLR connection only.
Stereo Line Inputs
2x ¼” TRS Jack (Tip-Hot/Positive, Ring-Cold/Negative,
Sleeve-Ground)
Stereo input connections are normalled (L/M, R), connect mono signals to left
socket only. Digital trim control available in processing channel.

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