ALLEN & HEATH CQ-18T User Manual

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User Guide V1.1.0 Issue 1
OUTPUT / LEVEL and LIMITER
A Limiter works like a very fast compressor with an infinite:1 compression ratio and
limits the output level to whatever is set by the threshold.
In CQ, the limiter is applied post fader, meaning that it can be set for use on an
output for monitoring and prevent the output signal rising above a set level, even if
the output level fader is adjusted by a musician using CQ4You for example.
Fast/Slow – Select the speed of the Limiter on the signal.
Threshold – Set the level when the limiter will be triggered (effectively maximum
output level).
In/Out – Enable or disable the Limiter.

ALLEN & HEATH CQ-18T Specifications

General

Frequency range	20 - 20000 Hz
Channels quantity	18 channels
Supported sample rates	96 kHz
Digital sound processing	- bit
Phantom power	48 V
AC input voltage	100 - 240 V
AC input frequency	50/60 Hz
Power consumption (typical)	35 W
Output impedance	75 Ω
Built-in display	Yes
Compatible memory cards	SD, SDHC
Master (XLR) out	2
Number of microphone inputs	18
Video capability	-
USB connector type	USB Type-A, USB Type-B

Weight and Dimensions

Depth	242 mm
Width	346 mm
Height	89 mm
Weight	3000 g
Package depth	310 mm
Package width	430 mm
Package height	200 mm
Package weight	3800 g

Summary

Connections

Updating Firmware

Update firmware using the CQ-MixPad app

Step-by-step guide on how to update the CQ firmware using the dedicated mobile application.

Update firmware using a USB drive

Step-by-step guide on how to update the CQ firmware using a USB drive.

Connecting control apps

Operation and Workflow

How to…

Use Gain Assistant

Guide to using the Gain Assistant feature for automatic preamp gain setup.

CONFIG

INPUTS

Configuration settings for all input channels, including source and preamp.

OUTPUTS

Configuration settings for all output channels, including EQ and linking.

Digital Audio (Symbols) / USB/SD

Settings for digital audio routing via USB and SD card connections.

PROCESSING

INPUT / Preamp

Detailed settings for input preamplifiers, including gain and phantom power.

INPUT / Gate

INPUT / Compressor

FADER

Sends to Main LR

Sends to an Output

FX

CONTROL (Shared)

CONTROL (Inserted)

HOME

RECORD / Stereo

RECORD / Multitrack

Resets

CQ-12T and CQ-18T Factory Reset

Procedure for performing a factory reset on CQ-12T and CQ-18T models.

CQ-20B Factory and Network Only Resets

Procedure for performing factory and network resets on the CQ-20B model.