ALLEN & HEATH CQ-20B User Manual

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User Guide V1.1.0 Issue 1
3. Updating Firmware
There are two methods for updating CQ firmware, either with the CQ-MixPad app
(available for iOS, Android, Mac and Windows) or by using a USB drive connected to
the USB-A port.
Updating firmware (from V1.1.0 onward) will not clear or delete data, but it is best
practice to store a show before carrying out an update if possible.
 CQ’s manufactured before September 2023 were loaded with firmware V1.0.1. Data
stored using this version is incompatible with later firmware. A full reset should be
carried out after the first firmware update.
Update firmware using the CQ-MixPad app
1. Download the latest version of the app. iOS and Android versions are
available from the App Store and Play Store. Mac and PC versions are
available from allen-heath.com.
2. Connect CQ-MixPad to the CQ (see the App Setup section)
3. If an update is required, the app will provide details and instructions on
screen, with an option to begin the update process.
4. Confirm the update on the CQ.
5. Restart the CQ.
6. Check that the new version has installed correctly by looking at Current: in
the HOME / SYSTEM / Firmware tab, or find the Firmware Version: listed
in the HOME / SYSTEM / Info tab.

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