Allen & Heath AH-QU-24 User manual

Check www.allen-heath.com for the latest firmware available Check www.allen-heath.com for the latest firmware available

Publication AP9372 issue 1

Publication AP9372

Limited One Year Manufacturer’s Warranty

This product is warranted to be free from defects in materials or workmanship for period of one year from the date of purchase by the original owner.

To ensure a high level of performance and reliability for which this equipment has been designed and manufactured, read this User Guide before operating.

In the event of a failure, notify and return the defective unit to the place of purchase. If this is not possible then please contact the authorised ALLEN & HEATH distributor or agent in your country as soon as possible for repair under warranty subject to the following conditions:

Conditions Of Warranty

The equipment has been installed and operated in accordance with the instructions in this User Guide.

The equipment has not been subject to misuse either intended or accidental, neglect, or alteration other than as described in the User Guide or Service Manual, or approved by ALLEN & HEATH.

Any necessary adjustment, alteration or repair has been carried out by an authorised ALLEN & HEATH distributor or agent.

This warranty does not cover fader wear and tear.

The defective unit is to be returned carriage prepaid to the place of purchase, an authorised ALLEN & HEATH distributor or agent with proof of purchase. Please discuss this with the distributor or the agent before shipping.

If the unit is to be repaired in a different country to that of its purchase the repair may take longer than normal, whilst the warranty is confirmed and parts are sourced.

Units returned should be packed to avoid transit damage.

In certain territories the terms may vary. Check with your ALLEN & HEATH distributor or agent for any additional warranty which may apply.

If further assistance is required please contact Allen & Heath Ltd.

Qu Series products complies with the European Electromagnetic Compatibility directives 2004/108/EC and the European Low Voltage directives 2006/95/EC.

Any changes or modifications to the equipment not approved by Allen & Heath could void the compliance of the product and therefore the users authority to operate it.

Qu Mixer User Guide AP9372 Issue 2

Allen & Heath Limited, Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK

Qu Mixer User Guide 2 AP9372 iss.2

ALLEN&HEATH

http://www.allen-heath.com

IMPORTANT - Read these instructions before starting:

Safety instructions

Before starting, read the Important Safety Instructions printed on the sheets supplied with the equipment. For your own safety and that of the operator, technical crew and performers, follow all instructions and heed all warnings printed on the sheet and on the equipment panels.

System operating firmware

The function of the Qu mixer is determined by the firmware (operating software) that runs it. Firmware is updated regularly as new features are added and improvements made. The firmware version current when this guide was released is noted in the Contents section.

The latest firmware can be downloaded from the Allen & Heath website, transferred to USB key and then loaded into the Qu mixer using the Firmware Update utility.

 Check the Allen & Heath website for the latest version of Qu firmware.

Software licence agreement

By using this Allen & Heath product and the software within it you agree to be bound by the terms of the relevant End User Licence Agreement (EULA), a copy of which can be found on the Allen & Heath website in the product's pages. You agree to be bound by the terms of the EULA by installing, copying, or using the software.

Further information

Please refer to the Allen & Heath website for further information, knowledgebase and technical support. You can join our Allen & Heath Digital Community to share knowledge and information with other Qu users.

General precautions



To prevent damage to the controls and cosmetics, avoid placing heavy objects on the control surface, obstructing movement of the motorised faders, scratching the surface or touch screen with sharp objects, or rough handling and vibration.

 Protect the equipment from damage through liquid or dust contamination. Avoid dust or

small objects getting into the fader slots. Cover the mixer when it is not being used for a long period.

 Computer and touch screen technology can be affected by extreme cold. If the

equipment has been stored in sub-zero temperatures allow time for it to reach normal operating temperature before use at the venue. Recommended operating temperature for Qu is 5 to 35 degrees Celsius.

 Avoid using the equipment in extreme heat and direct sunlight. Make sure the mixer

ventilation slots are not obstructed and that there is adequate air movement around the equipment.

 Transport the Qu using a touring grade, purpose designed flightcase with adequate

foam lining and internal support for protection.

 Clean the control surface with a soft brush and dry lint-free cloth. Do not use chemicals,

abrasives or solvents.

 It is recommended that servicing is carried out only by an authorised Allen & Heath

agent. Contact details for your local distributor can be found on the Allen & Heath website. Allen & Heath do not accept liability for damage caused by maintenance, repair or modification by unauthorised personnel.

Qu Mixer User Guide 3 AP9372 iss.2

1. Packed contents

Options and Accessories available

Remote AudioRacks

Provides remote audio over dSNAKE Cat5 cable digital snake.

AR2412 24 Mic/Line in, 12 Line out AR84 8 Mic/Line in, 4 Line out

Part: GLD-AR2412 Part: GLD-AR0804

19” Rack Ear Kit for Qu-16

To mount the Qu-16 in a standard 19” rack or flightcase. These fit over the plastic trims.

Part: QU-16-RK19

Qu Mixer

Mains lead is correct for your territory

• Check this

User Guide AP9372

Safety Sheets

AP3345 – English AP7287 – French AP8513 – Chinese

• Read this before starting

LEDlamp

Right angled 4-pin XLR LED lamp with built-in dimmer

Part: LEDlampX

Soft cover

AP9262 Qu-16 AP9458 Qu-24

Cat5 cables

For use with dSNAKE remote audio

AH8822 2m (6.6’) short patch AH7000 80m (264’) drum AH8721 120m (396’) drum

Qu-Pad app for iPad Available from the Apple Store

http://www.allen-heath.com

Qu Mixer User Guide 4 AP9372 iss.2

2. Contents

1. Packed contents ................................................................................................................................. 4

2. Contents .............................................................................................................................................. 5

3. Introduction ......................................................................................................................................... 7

3.1 Overview and Features .............................................................................................................. 7

3.2 System Architecture and Processing ........................................................................................ 8

3.3 Differences between the Qu-16 and Qu-24 ............................................................................... 9

4. Connection Overview ........................................................................................................................ 10

4.1 Local Input Connections .......................................................................................................... 10

4.2 Local Output Connections ....................................................................................................... 11

4.3 Other Connections ................................................................................................................... 11

4.4 Powering up the mixer ............................................................................................................. 12

5. Connecting dSNAKE Remote Audio ................................................................................................ 13

5.1 Connecting to a remote AudioRack ........................................................................................ 13

5.2 Qu-16 and Qu-24 Systems ...................................................................................................... 14

5.3 Connecting to the ME Personal Mixing System ...................................................................... 15

6. Operational Overview ....................................................................................................................... 16

6.1 Fader Strips .............................................................................................................................. 16

6.2 Channel Processing ................................................................................................................. 18

6.3 Working with the Processing: .................................................................................................. 18

6.4 Working with Processing Libraries: ......................................................................................... 18

6.5 Processing Libraries ................................................................................................................ 23

6.6 Channel Routing ...................................................................................................................... 24

6.7 Working with the Routing screens: .......................................................................................... 24

6.8 Working with the Groups (not Qu-16) ..................................................................................... 25

6.9 Working with the Matrix (not Qu-16) ........................................................................................ 26

6.10 Mute Groups ............................................................................................................................ 27

6.11 Using the Mute Groups ............................................................................................................ 27

6.12 The Master Strip ....................................................................................................................... 28

6.13 Working with the sends on faders: .......................................................................................... 29

7. Touch Screen Mixing Functions ....................................................................................................... 30

7.1 Copy, Paste, Reset keys .......................................................................................................... 31

7.2 The Sel screens – Processing and Routing ............................................................................ 32

7.3 Home Screen ........................................................................................................................... 32

7.4 Home Screen – User ................................................................................................................ 33

7.5 Home Screen – Meters ............................................................................................................ 34

7.6 Home Screen – RTA ................................................................................................................ 34

7.7 Home Screen – Qu-Drive (USB audio) .................................................................................... 34

7.8 The FX ...................................................................................................................................... 37

7.9 Working with FX – Adding vocal reverb: ................................................................................. 39

7.10 Scene Memories ...................................................................................................................... 40

8. Touch Screen Setup Functions ........................................................................................................ 43

8.1 Audio Setup -PAFL ................................................................................................................... 43

8.2 Audio Setup - Talkback ........................................................................................................... 43

8.3 Audio Setup –Signal Generator ............................................................................................... 44

8.4 Control Setup – Custom Strip .................................................................................................. 44

8.5 Control Setup - SoftKeys ......................................................................................................... 45

8.6 Control Setup - Network .......................................................................................................... 46

Qu Mixer User Guide 5 AP9372 iss.2

8.7 Control Setup - MIDI ................................................................................................................ 46

8.8 USB Data – Scene Transfer ..................................................................................................... 47

8.9 USB Data – Library transfer ..................................................................................................... 47

8.10 USB Data – Show transfer ....................................................................................................... 48

8.11 Output Patch Setup – Surface ................................................................................................. 49

8.12 Output Patch Setup – dSNAKE ............................................................................................... 49

8.13 Output Patch Setup - Monitor .................................................................................................. 50

8.14 Output Patch Setup – USB Audio ............................................................................................ 51

8.15 Utility - Calibration .................................................................................................................... 51

8.16 Utility – Qu-Drive ...................................................................................................................... 52

8.17 Utility – Firmware Update ......................................................................................................... 53

9. Working with Audio Streaming and a DAW...................................................................................... 54

10. Qu-Pad iPad app .............................................................................................................................. 56

11. Resetting the Mixer ........................................................................................................................... 57

11.1 Reset Mix Settings – A starting point for mixing ...................................................................... 57

11.2 System Hard Reset .................................................................................................................. 58

12. Specifications .................................................................................................................................... 59

12.1 Qu-16 System Block Diagram ................................................................................................. 60

12.2 Qu-24 System Block Diagram ................................................................................................. 61

12.3 Mechanical Details ................................................................................................................... 62

About this guide

This is the User Guide for the Allen & Heath Qu-16 and Qu-24 digital mixers.

Please Note

This guide refers to Qu firmware V1.4. Please refer to the Allen & Heath website for the latest version of firmware and this user guide. For more details read the Release Notes available with the firmware.

USB audio streaming is compatible with Windows computers. Suitable drivers can be downloaded from the Allen & Heath website.

PC and Apple® Mac

Qu Mixer User Guide 6 AP9372 iss.2

3. Introduction

3.1 Overview and Features

Building on the heritage of the GLD and flagship iLive digital consoles, the Qu presents exceptional performance together with an intuitive analogue style user interface with a motorised fader per channel, knobs and touch screen, total recall of all settings, full input, output and FX processing, USB streaming and hard drive multitrack recording, digital snake capability and remote wireless control using an iPad. There are two models in the Qu Digital Audio Mixer Series:

Qu-16 – Compact, rack mountable mixer with 16 mic and 3 stereo line channels.

Qu-24 – Larger mixer with 8 more mic channels, 2 more FX sends, 6 more

assignable SoftKeys, and adding 2 stereo groups and 2 stereo matrix.

Qu-16 Qu-24

 16 mono Mic/Line channels  24 mono Mic/Line channels

 3 stereo Line channels  3 stereo Line channels

 24 sources to the mix  32 sources to the mix

 12 mixes (4 mono, 3 stereo, LR)  12 mixes (4 mono, 3 stereo, LR)

 4 FX with 2 FX send buses  4 FX with 4 FX send buses

 4 assignable SoftKeys  10 assignable SoftKeys

 4 Mute Groups  4 Mute Groups

 24 out, 22 in USB streaming  32 out, 30 in USB streaming

 2 stereo Groups

 2 stereo Matrix

Qu-16 and Qu-24

 Extra stereo outputs – AES digital, Alt Out, 2TRK out

 Talkback mic input

 dSNAKE for remote audio using an AR2412 or AR84 AudioRack

 AnaLOGIQ™ total recall analogue preamps

 Effects ported from the flagship iLive console

 Dedicated stereo FX return channels

 Master strip for quick access to mix levels and processing

 Input channel linking for stereo sources

 Input processing – Preamp, HPF, Gate, PEQ, Compressor, Delay

 Output processing – PEQ, Graphic EQ, Compressor, Delay

 800x480 pixel colour touch screen for quick control

 Motorised faders for sends on faders, GEQ fader flip and mix recall

 Quick copy and reset of settings and scenes

 100 Scene memories

 Channel Safes, Global and per Scene Recall Filters

 Channel processing User Libraries

 Qu-Drive for stereo and 18-track recording/playback to USB hard drive

 USB streaming to/from an Apple

 MIDI DAW Control driver for Mac (converts to HUI or Mackie Control)

 USB transfer of Scenes, Libraries, Shows

 User assignable Custom Layer

 Qu-Pad wireless remote app for iPad

 Compatible with the Allen & Heath ME personal mixing system

 User Permissions to restrict operator access

Mac or Windows™ PC computer

Qu Mixer User Guide 7 AP9372 iss.2

3.2 System Architecture and Processing

The following diagrams show the Qu-16 and Qu-24 I/O (inputs and outputs), audio architecture and processing available. The differences between the models and the routing capability of each processing section is illustrated. Refer also to the more detailed System Block Diagrams at the rear of this guide.

SYSTEM DIAGRAMQu-16

Mic/Line Inputs

1 ---------- 16

PREAMP

Mic

GAIN

Line

48V

Channel SOURCE

TRIM HPF GATE PEQ COMP

POL

FX Send 1-2

FADER ASSIGN

MUTE

Local Inputs dSNAKE USB

Insert

PRE/POST

SENDS

Line Inputs

ST1

ST2

L/M

ST3

L/R

Input Channels 1-16, ST1-3

DELAY

Insert

FX 1-4

MUTE

FX Return 1-4

PEQ

MUTE

FADER

PAFL

ASSIGN

PAN

PRE/POST

SENDS

PAFL Route to:

FADER ASS IGN

PAN

PRE/POST

SENDS

dSNAKE

Qu-Drive

Playback

LR, 18 trk

USB B

Stream Stream

22 ch 24 ch

Route to:

MIX Sends

FX Sends DIR OUT

MIX Sends

FX Sends

Record

LR, 18 trk

USB dSNAKE

PAFL

Mono 1-4, Stereo 5-6, 7-8, 9-10 Mix

Insert

PEQ COMP

RTA

DELAY

GEQ

Cat5 Digital Snake to AudioRack

Line Outputs

Mix 1-----------10 Main LR

Local Outputs

PAFL MONITOR

PHONESPFL TRIM

PAFL

DELAY

MUTE

FADER

PAFL

Output BAL

2Trk

LR post

AES Out

Alt Out

Output PATCHMixInputs

Route to:

Outputs

SYSTEM DIAGRAMQu-24

Mic/Line Inputs

1 ---------- 24

PREAMP

Mic

GAIN

Line

48V

Channel SOURCE

POL

TRIM HPF GATE PEQ COMP

FX Send 1-4

FADER

MUTE

Local Inputs dSNAKE USB

Insert

ASSIGN

PRE/POST

SENDS

Talkback

GAIN HPF

Mic

Sine Pink

White

Bandpass

Line Inputs

ST1

ST2

L/M

ST3

L/R

Input Channels 1-24, ST1-3

MUTE

FX Return 1-4

PEQ

MUTE

FADER

DELAY

Insert

FX 1-4

FADER

MUTE

PAN

TALKBACK

TALK

SIG GEN

LEV

PAFL

ASSIGN

PRE/POST

SENDS

PAFL Route to:

ASSIGN

PAN

PRE/POST

SENDS

Route to:

ASSIGN

MIX

Route to:

ASSIGN

MIX

Playback

LR, 18 trk

Stream Stream

30 ch 32 ch

Route to:

GRP

MIX Sends

FX Sends DIR OUT

GRP

MIX Sends

FX Sends

dSNAKE

Qu-Drive

USB B

Record

LR, 18 trk

USB dSNAKE

Main LR

Insert

PEQ COMP

GEQ

DELAY

MUTE

Cat5 Digital Snake to AudioRack

Line Outputs

Grp 1---4 Mix 1---------------10 Main LR MTX 1---4

Group 1-2, 3-4

PEQ COMP

Insert

GEQ

DELAY

MUTE

Mono 1-4, Stereo 5-6, 7-8, 9-10 Mix

Insert

PEQ COMP

GEQ

DELAY

MUTE

PAFL

Output BAL

FADER

Local Outputs

FADER

PAN

PAFL

Output BAL

FADER

ASSIGN

PRE/POST

SENDS

2Trk

LR post

Output BAL

Route to:

Outputs

PAFL

ASSIGN

PRE/POST

SENDS

Route to:

Outputs

MTX Sends

Alt Out

AES Out

Output PATCHMixInputs Masters

Route to:

Outputs

MIX Sends

FX Sends

MTX Sends

DELAY

RTA

PAFL MONITOR

PHONESPFL TRIM

PAFL

Talkback

ASSIGN

Route to:

GRP

LR MIX MTX

Route to:

GRP

LR MIX MTX

PAFL

Insert

PEQ COMP

Insert

PEQ COMP

Mic

Sine Pink

White

Bandpass

SIG GEN

MUTE

TALK

LEV

TALKBACK

GAIN HPF

GEQ

Main LR

DELAY

Matrix 1-2, 3-4

DELAY

MUTE

FADER

PAFL

Output BAL

ASSIGN

PRE/POST

SENDS

PAFL

Output BAL

ASSIGN

PRE/POST

SENDS

Route to:

Outputs

MTX Sends

Route to:

Outputs

Qu Mixer User Guide 8 AP9372 iss.2

3.3 Differences between the Qu-16 and Qu-24

Both models operate in the same way and have a similar touch screen menu structure. The larger model adds Groups and Matrix. Other differences are shown here:

16 fader strips

24 out, 22 in USB audio streaming

Scene, Library and Show memories - Qu-16 and Qu-24 memories are compatible. Files created on one model can be transferred via USB key and loaded on the other. The extra features of the Qu-24 will be ignored when a Qu-24 file is loaded on a Qu-16. The extra features of the Qu-24 will be reset to factory default when a Qu-16 file is loaded on a Qu-24.

Note To be compatible, ensure all your Qu mixers including Qu-16 and Qu-

24 are loaded with the same version of firmware V1.3 or later. Check the Allen & Heath web site for the latest firmware.

USB Audio - A USB hard drive formatted on one model can be used on the other. Stereo and multitrack Qu-Drive recordings are compatible. USB B audio streaming is compatible, but note that the Qu-16 is 24 out / 22 in, and the Qu-24 is 32 out / 30 in.

Firmware - Different firmware is needed for each model. Choose either the Qu-16 or Qu-24 file when downloading firmware from the Allen & Heath web site. The firmware version number will be the same for each update that is made available. The procedure for updating firmware is the same for both models.

4 SoftKeys

Shelf for iPad 10 SoftKeys Group masters Matrix masters

Extra FX Send and Group Mix select 24 fader strips

LED colour strips to identify layer

24 Mic/Line in 16 Mic/Line in

32 out, 30 in USB audio streaming

Group out Matrix out

Qu Mixer User Guide 9 AP9372 iss.2

Talkback Mic in

ST1 and ST2 stereo line in

4. Connection Overview

The following connections are available on the rear panel of the Qu mixer. The Qu-16 is shown here.

AES digital out

Network

USB B streaming

Alt out

2Trk out

dSNAKE remote audio

LR main out Lamp

Analogue Mix outputs Mic and Line inputs

Power On/Off

Mains power input

Mains fuse

Kensington Lock

Cable clamp

4.1 Local Input Connections

Pin2 = hot

Mono Line Input – Balanced ¼” TRS (Tip, Ring,

Sleeve) jack input for plugging in line level signals such as multitrack players and radio mic receivers. To work with unbalanced sources use a mono jack or link ring to sleeve within the TRS stereo jack.

Use DI boxes plugged into the Mic input for high impedance, low level sources such as acoustic instrument pickups.

Microphone Input – Balanced XLR input for plugging

in a low level source such as a microphone or DI box. 48V can be switched to the socket for condenser mics and active DI boxes that require phantom power.

Note - To avoid loud thumps, mute the channel before

plugging in cables or switching 48V on or off.

Stereo Line Input – ST1 and ST2 balanced ¼” TRS

(Tip, Ring, Sleeve) jack inputs for plugging in line level stereo sources such as CD players. The L input normals (switches) through the R input so that you can work with a mono source by plugging into just the L/M input.

To work with RCA phono connections use jack to RCA converter plugs.

Talkback Input – Dedicated balanced XLR input for

plugging in a microphone to route to the mixes for the engineer to talk to the performers on stage. Phantom power can be switched to the socket for condenser microphones.

Qu Mixer User Guide 10 AP9372 iss.2

4.2 Local Output Connections

Pin2 = hot

Group, Mix, Matrix outputs – Balanced XLR line

level outputs for the mono and stereo mixes, for example to feed monitor amplifiers, external processing devices, delay fill speaker systems and recording devices. These use low impedance, high quality differential driver circuits for connection to +4 or 0dBu equipment. Maximum output is +22dBu.

Professional equipment provides ‘balanced’ connections for maximum interference rejection over long cable runs. If you are connecting to ‘unbalanced’ equipment then make sure the XLR pin 3 (signal cold) is linked to pin 1 (signal ground).

Main LR output – Balanced XLR line level outputs for

the main Left and Right stereo mix. These typically plug into the FOH speaker processor, amplifier or powered speakers.

AES output – 2-channel digital output using a single

XLR connection and standard mic (2-core screened) audio cable. It follows the AES (Audio Engineering Society) digital audio standard and can connect to any equipment fitted with an AES input socket. The source to this output is patched using the Setup / Audio / Output Patch screen. Applications include the feed to a PA speaker processor, amplifier, stereo broadcast or recording device equipped with AES input.

4.3 Other Connections

Alt out – Stereo ‘alternative’ output on balanced TRS

jacks for connection to +4 or 0dBu equipment such as zone feeds, fill speakers, broadcast or local monitor. The source to this output is patched using the Setup / Audio / Output

Patch screen.

2TRK out – Stereo output on balanced TRS jacks for

connection to +4 or 0dBu equipment such as stereo recorders. It follows the post master fader main LR mix.

Lamp – Plug in a 4-pin gooseneck lamp to illuminate the

mixer surface. You can use any industry standard 12V, 5W or lower power lamp. We recommend the Allen & Heath LEDLamp with built-in thumbwheel dimmer.

USB B – Type B USB connection for multi-channel

bi-directional audio streaming between the mixer and a computer. Follows the high speed USB 2.0 standard.

Refer to the Allen & Heath web site for information on Windows® and Apple® Mac drivers available for Qu.

Network – Fast Ethernet (100 Mbit/s) port for Cat5 cable

connection to a computer for MIDI over TCP/IP control of mixer parameters, or to a wireless router (access point) for live mixing control using the Allen & Heath Qu-Pad app running on an iPad. The Lnk indicator flashes to indicate network activity.

dSNAKE – The proprietary Allen & Heath ‘digital snake’

connection for remote audio using an AR2412 or AR84 AudioRack, and for personal monitoring using the ME Personal Mixing System.

Qu Mixer User Guide 11 AP9372 iss.2

4.4 Powering up the mixer

The Qu mixer has an internal universal voltage power supply unit. This means you can use your mixer in most parts of the world without the need to modify the unit as long the local mains supply is within the range:

Mains Voltage = 100 to 240 V.AC

Mains Frequency = 47 to 63Hz

Important - Before starting, read the Safety Instructions

Sheet packed with the mixer. These can also be

downloaded from the Allen & Heath website.

Also read the safety notes printed on the rear of the mixer.

AC MAINS IN – Standard IEC socket for connecting the

mixer to the local mains supply. Plug in a mains lead with moulded plug suitable for your territory. A suitable mains lead is shipped with the mixer.

Note – Do not replace the mains plug or modify the lead in

any way. For your own safety and that of the operator and performers do not remove or defeat the ground connection.

A cable clamp is provided. You can slot the cable into this or lock it in place. To lock the cable use a star head Torx T20 screwdriver to refit the clamp around the cable.

Fuse – Mains input fuse to protect the mixer circuits in the

unlikely event of a failure or excessive power surge. If you need to replace the fuse always use one of the same type and rating as printed on the rear panel. If the replacement fuse blows then refer to your authorised Allen & Heath service agent for advice.

Power ON/OFF switch – Press to switch the mixer

on. Press again to switch it off.

Switching the mixer on – Press the ON/OFF switch.

The rear panel blue Power indicator lights. The mixer takes just a few seconds to boot up. It restores its previous settings. LR mix is selected and its processing shown on the screen.

Note – To avoid loud thumps, do not switch the mixer on or

off while the PA speakers are powered. Always switch the amplifiers on last, and switch them off first.

Switching the mixer off – First select the Home

screen. Touch Shut Down to safely complete processes such as parameter storing and USB data transfer or recording. Once complete, press the ON/OFF switch to turn the mixer off.

Qu Mixer User Guide 12 AP9372 iss.2

5. Connecting dSNAKE Remote Audio

The Qu mixer provides local sockets on its rear panel for all audio inputs and outputs. It can also work with remote audio by connecting over a single cable ‘digital snake’ to an Allen & Heath AudioRack, or to the Allen & Heath ME Personal Mixing System.

5.1 Connecting to a remote AudioRack

The Qu can connect to an Allen & Heath GLD-AR2412 or GLD-AR84 AudioRack so that the audio can be plugged into a rack on stage and routed to the mixer over a single Cat5 cable ‘digital snake’ plugged into its dSNAKE port.

dSNAKE carries:

 Up to 30 remote input signals  Up to 16 remote output signals  40 personal mixing sends  Preamp control – Gain, Pad, 48V

The Qu mixer provides a locking Neutrik EtherCon socket to protect the connections and ensure suitability for touring. Use a touring grade cable fitted with locking EtherCon plugs.

The following remote AudioRacks are available:

AR84 main rack CH 1-8 Mix 1-2, LR dSNAKE link

AR2412 main rack CH1-16, ST1-3 Mix 1-10, LR

The ‘digital snake’ – dSNAKE provides a convenient,

single Cat5 cable alternative to the typical heavy analogue copper multicore to connect many inputs and outputs on stage. One cable carries multiple channels of audio in both directions together with remote control of the preamps.

Cat5 cable – Use STP (shielded twisted pair) Cat5e or higher cables. Those with both foil and braided screens provide shielding from interference and are generally more rugged. Stranded core cables are less prone to damage when kinked or repeatedly coiled.

Maximum cable length = 120m (396’)

Remote Inputs - dSNAKE inputs are mapped one-toone to the Qu input channels.

Note - dSNAKE does not add channels to the mixer.

Choose either Local (rear panel) or dSNK (remote) input for each channel.

Remote Outputs - Qu mix and LR outputs are mapped to the output sockets on the AR rack. These duplicate the outputs on the Qu-16 rear panel.

R84 expander or ME-1

ME-1 Monitor

Qu Mixer User Guide 13 AP9372 iss.2

5.2 Qu-16 and Qu-24 Systems

The Qu mixer has sockets for all its inputs and outputs on its rear panel and can therefore be used without any additional rack. However, if you wish to use a digital snake to connect remote stage audio to the mixer using a single Cat5 cable then there are several rack options available.

Inputs – Use the Preamp screen to choose either ‘Local’ or ‘dSNK’ (remote) for each channel source. Adding a rack does not expand the number of Qu

CH1-8 Mix1-2, LR

R84

dSNAKE

CH1-16, ST1-3 Mix1-10, LR

R2412

dSNAKE

Qu-16

channels available.

Outputs – The Qu outputs will appear simultaneously at its rear panel sockets and also at the sockets on the remote rack. The mixes mapped to the rack sockets are shown in the diagrams here.

Qu-16 + AR84 AudioRack

Remote Mic/Line inputs are available for CH1 to 8.

Mix1, 2 and the main LR mix are available from rack sockets 1-4.

This compact setup is ideal for a band, corporate event or small club using a stereo PA and two monitor mixes.

CH1-8 Mix1-2, LR

dSNAKE

CH1-24 Mix1-10, LR

dSNAKE

ST1-3 MTX1-4

R84

Qu-24

R2412

Qu-24

R84

Qu-16 + AR2412 AudioRack

Remote Mic/Line inputs are available for all channels including mono CH1-16 and stereo ST1-3. Left and right of the stereo channels use rack sockets 17-22. Rack sockets 23-24 are not used.

The EXPANDER socket is not used for audio I/O, but can also be used to connect to a ME monitor system.

All Qu-16 mixes including Mix1-10 and LR are available from rack sockets 1-12 (L=11, R=12).

Qu-24 + AR84 AudioRack

Remote Mic/Line inputs are available for CH1 to 8.

Mix1, 2 and the main LR mix are available from rack sockets 1-4.

This setup is ideal for a band, corporate event or small club where you are using just a few remote inputs and a stereo PA with two monitor mixes.

Qu-24 + AR2412 AudioRack

Remote Mic/Line inputs are available for all mono channels CH1-24.

Mix1-10 and LR are available from rack sockets 1-12 (L=11, R=12).

Qu-24 + AR2412 + AR84 AudioRacks

CH1-24 Mix1-10, LR

dSNAKE

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EXPANDER

R2412

Qu-24

Remote Mic/Line inputs are available on the AR2412 for all mono channels CH1-24. ST1-3 inputs are available on an AR84 plugged into the AR2412 EXPANDER port.

Mix1-10 and LR are available from AR2412 rack sockets 1-12 (L=11, R=12). MTX1-2 and 3-4 outputs are available on an AR84 plugged into the AR2412 EXPANDER port.

5.3 Connecting to the ME Personal Mixing System

The Allen & Heath ME Personal Mixing System can be used with the Qu mixer. This provides customisable personal monitor control for individual musicians and performers on stage.

ME-1 personal mixer – A compact personal mixer able to work with up to 40 channels. Features built-in headphones and monitor output. Intuitive and easy to operate, its 16 select keys can be configured to provide as much or as little control as the musician needs.

The 40 ME channels are mapped from the Qu input channel direct outputs, FX and mixes to dSNAKE. Qu sends audio and stereo status information. Channels can be chosen and grouped to ME-1 keys using the setup function available on the ME-1 mixer.

Multiple ME-1 mixers can be connected in series (daisy chained) by linking the output of one to the input of the next. Alternatively, they can be connected in parallel and powered over their Cat5 cables using a standard PoE Ethernet switch or the Allen & Heath ME-U hub. The ME connects directly to a dSNAKE compatible port using a Cat5 cable.

Connecting ME to the AR2412 AudioRack - ME-1 mixers, a standard Ethernet switch or the ME-U hub can be plugged into either or both the AR2412 MONITOR and EXPANDER ports.

Daisy chain

Connecting ME to the Qu mixer - ME-1 mixers, a standard Ethernet switch or the ME-U hub can be plugged directly into the Qu dSNAKE port if you are not using this to connect to an AudioRack. Power can be provided over the Cat5 by the ME-U or a PoE switch.

Find out more about the ME Personal Mixing System at www.allen-heath.com

dSNAKE

Daisy chain other ME-1

MONITOR port

dSNAKE

Power unit

EXPANDER port

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6. Operational Overview

This section provides an overview of the Qu layout and operation to help you get started quickly. The smaller Qu-16 mixer is shown here.

Fader Flip

Mix assign

Layer select

Fader Strips

SuperStrip

TouchChannel

Channel select Sel key

Touch Screen

Screen select

Qu-Drive

Engineer’s monitor

Copy/Paste/reset

Function key

SoftKeys

Master Strip

Mix select Mix keys

6.1 Fader Strips

The Qu has a group of fader strips, one per channel. These provide access to the input and master channel levels and processing.

The main channel levels, master levels and all sends to the FX and mixes can be easily viewed and adjusted using the faders. The faders can also be used to adjust the Graphic EQ while in Fader Flip mode.

The faders are motorised and instantly move to show the current settings when the layer or function is changed.

Layers – There are three Layers. These provide access to inputs and masters as identified by the labels

alongside the layer select keys. Indicators next to the keys show which layer is active.

Press the lower key to access the mono channels.

Press the upper key to access the 3 stereo channels, FX returns, FX sends and Mix masters.

Press both keys together to access the user assignable Custom layer.

Note – There is an option in the Setup screen to enable ‘Custom Layer only’. This lets you choose which

channels the user should have access to.

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Mute key – Press to turn off the channel audio signal. This affects the send to

all mixes including LR, groups, effects and stage monitors. The Mute key lights red when the channel is muted. It flashes when it is muted by a Mute Group master.

Sel key (select) – Press to access the Channel Processing. Parameters can

be adjusted using the SuperStrip controls. The touch screen will display the settings and provide additional controls if either the Processing or Routing screen is active. The Sel key is also used for:

Assign mix routing – Hold down the ‘Assign’ key and press Sel keys to assign channels to the mix currently selected in the Master Strip. The Sel keys light green to show channels assigned to the selected mix.

Assign Pre/Post fade sends – Hold down the ‘Pre Fade’ key and press Sel keys to toggle channel sends pre or post fader for the mix currently selected in the Master Strip. The Sel keys light green to show channels set pre-fade.

Copy channel processing – Hold down the Copy key and press a channel Sel key to copy its processing settings. Then hold down the Paste key and press one or more Sel keys to instantly paste those settings to other channels.

Reset channel processing – Hold down the Reset key and press a channel Sel key to instantly reset all its processing to factory default.

Reset Graphic EQ band – Press Sel to reset the associated GEQ frequency band to 0dB while in GEQ Flip mode.

PAFL key – Press to listen to a channel using headphones and check its level

on the main meters. The meter PAFL indicator lights. Press PAFL again to turn it off. A SoftKey can be assigned to clear all active PAFL selections.

Options are available in the Setup screen to choose how you want PAFL to work:

Auto-cancel – Listen to one channel at a time.

Additive mode – Listen to more than one channel at a time.

Sel follow PAFL – Link the Sel switch so that pressing PAFL automatically

selects the processing for that channel.

LR to PAFL – Routes the main LR mix to the monitor when there is no PAFL selected.

Output AFL – This option sets the mix strip PAFL keys to monitor AFL (afterfade listen). With this option turned off these keys monitor PFL (pre-fade listen). The default is AFL so that you can check mixes after the master fader.

Input AFL – This option sets the input strip PAFL keys to monitor AFL (afterfade listen). With this option turned off these keys monitor PFL (pre-fade listen). PFL is the usual setting for inputs so that you can check and set their gain before you bring up the faders.

Channel meter – The strip meters let you keep an eye on signal levels while

you are mixing. These display channel level before the fader and mute control:

Pk – Lights red to warn that the signal is too hot and gain or trim should be reduced. It turns on 3dB before clipping to warn you before audible distortion. Pk senses the signal at several points within the channel.

0 – Lights when the signal reaches nominal 0dBu allowing a healthy 18dB headroom. This is the normal level for mixing.

Sig – Lights to show signal presence. It turns on at -26dBu.

Fader – Controls the level of the input channel, FX or mix master assigned to it.

This can be the main channel fader or a send to an effect or mix depending on which Mix Select key is active in the Master Strip.

The faders can control the Graphic EQ frequency bands while in GEQ Flip mode with a mix master Sel key active. The range of frequencies accessed by the faders is highlighted in the touch screen and labelled at the top of the faders. The centre 0dB flat position is marked on the fader scale.

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6.2 Channel Processing

The SuperStrip provides familiar, analogue feel, one function per knob control of channel and mix master processing such as equalisers and dynamics. The Touch Screen displays the parameter values and provides additional related controls while in the Processing screen. This processing is accessed using the fader strip Sel keys.

The following processing is available:

Mono input CH = Source, Preamp, HPF, Gate, PEQ, Compressor, Delay, Stereo Linking Stereo input ST1-3 = Source, Preamp, HPF, Gate, PEQ, Compressor, Delay FX Return 1-4 = FX parameters, PEQ Grp1-4 (not Qu-16) = Parametric EQ, Graphic EQ, Compressor, Delay Mix1-10, LR = Parametric EQ, Graphic EQ, Compressor, Delay MTX1-4 (not Qu-16) = Parametric EQ, Graphic EQ, Compressor, Delay

6.3 Working with the Processing:

 Press a fader strip Sel key. The Processing Block

controls become active for that channel.

 Press the Processing key to work with the parameters

on the Touch Screen.

 Touch the top part of the Touch Screen to open the

tabs for the available processing blocks.

 View values in the lower part of the screen. Touch

screen buttons and use the screen rotary to adjust parameter values.

6.4 Working with Processing Libraries:

 Press the ‘Library’ Fn key to open and close the related

Library page.

 Use the left hand list for individual processing libraries

or the right hand list for complete input channel processing libraries including the preamp.

 Store - Touch ‘Store New’. Enter a name using the

screen keypad to store a new User Library. You can store up to 128 Libraries.

 Recall - Highlight a library item and touch ‘Recall’ to

instantly recall its settings. Turn on ‘Recall Preamp’ if you want to recall the preamp settings.

 Edit – Highlight a library item and touch ‘Overwrite’ to

overwrite an existing library with the current settings, or ‘Delete’ to delete it from the list. Touch the ‘Name’ box to edit its name.

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Choose either Qu-Drive or USB (affects all channels)

Local (red Gain) dSNAKE (yellow Gain)

Preamp

An analogue preamplifier (‘head amp’) matches each connected microphone or line signal to the operating level of the console before it gets converted to digital to be processed and mixed with the other channels.

Source lets you choose one of four sources as the input to the channel:

Local – Mic/Line sockets on the Qu rear panel.

dSNK – Remote preamps via dSNAKE.

Qu-Drv – Playback from USB hard drive.

USB B – Audio streaming from a Mac computer.

Press the Fn key to open the Source Select screen.

Touch the CH buttons to highlight those you wish to change. Select the source from the list.

Channel Preamp source

Local (red Gain) – Rear panel Mic/Line sockets

feeding the internal Qu mixer preamps. These are padless preamps featuring wide gain range.

dSNAKE (yellow Gain) – Remote preamps located in an AR2412 or AR84 AudioRack on stage or other remote location and connected to the Qu dSNAKE port via a Cat5 cable. The AudioRack preamps include 20dB Pad switching.

Qu-Drive (dark blue Gain) USB B (Light blue Gain)

Gain

Channel USB source

Qu-Drive source (blue Gain) – Stereo or multitrack

playback from a USB hard drive plugged into the top panel Qu-Drive port. Provides a +/-24dB Trim control.

USB B source (blue Gain) – Multi-channel streaming from a Mac computer via the rear panel USB B port. Provides a +/-24dB Trim control.

The panel USB Select key in the SuperStrip switches between the current Preamp source (Local or dSNAKE) and the current USB source (Qu-Drive or USB B).

Phantom Power

Turn on 48V if the connected device requires phantom power, for example a condenser microphone or active DI box. Touch and hold for 1 second to toggle on or off. This prevents accidental operation.

Note - To prevent audible thumps make sure the

channel is muted before switching 48V on or off. Do not plug or unplug sources while phantom power is on.

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