Description

Allen & Heath Qu-SB Portable 18-In/14-Out Digital Mixer

Designed to accommodate a wide variety of live-sound reinforcement and recording scenarios, the Allen & Heath Qu-SB is an 18-in/14-out rack-mountable, console-less digital mixer that doubles as a 32×32 USB recording interface. Featuring 16 of the company’s recallable AnalogiQ microphone preamps, and powered by a 5-core ARM processor, the Qu-SB provides a variety of integrated effects and processing, including channel-independent 4-band parametric EQs, compressors, delay, and reverb.

The mixer is compatible with both the ME Personal Mixing System and dSNAKE digital connectivity system from Allen & Heath, which allows for up to 38 inputs. The Qu-SB is designed to be used with the Qu-Pad app, allowing you to use your iPad to mix from anywhere in the venue when connected to a wireless network.

Qu-Pad Mixing App

Qu-SB is designed to integrate seamlessly with the Qu-Pad iPad app, providing super-fast, easy access to all settings, including channel processing, meters and RTA views, FX racks, scene management, USB audio control, setup menus and much more
Qu-Pad connects to the mixer over Wi-Fi and gives you the freedom to adjust the monitors on stage, roam around the venue whilst tweaking the PA, and then mix the show from the heart of the audience

AnalogiQ Preamps

Qu-SB’s sixteen AnalogiQ total recall preamps feature zero-crossing detection and an advanced pad-less 1 dB step gain stage, closely allied to the DSP for optimal gain accuracy and audio transparency. The analogue signal is captured by high-class, low-latency 24-bit analog-to-digital converters matched to high-quality 24-bit digital-to-analog converters to deliver the required outputs. The AnalogiQ design offers superb transparency, minimal distortion and an ultra-low noise floor, with a warm, musical sound

Qu-Drive

Qu-SB has an integrated multitrack USB recorder, providing 18 channels of 48 kHz/24-bit recording and playback straight to/from your USB hard drive. Mixes and FX returns can be recorded alongside channels, and multitrack audio can be played back to the mixer for virtual soundchecks
An independent set of controls is provided for quick stereo recording of the main LR or other mix outputs, and a 2-track USB return can be routed to ST3 for playback of stereo WAV files such as walk-in music

iLive FX

Qu-SB’s dynamics and FX algorithms are derived from the FX used in the iLive pro touring series. Qu-SB boasts 4 stereo iLive FX engines, featuring emulations of legendary classic reverbs, gated reverbs, delays, modulators, flangers and more

Automatic Mic Mixer (AMM)

AMM is vital in applications such as conferences, meetings and panel discussions where a number of microphones are open at the same time, reducing background noise and minimizing the risk of feedback. The Automatic Microphone Mixer feature helps the engineer manage the levels of multiple mic inputs, ensuring that each speaker’s contribution is heard. The D-Classic dynamic gain-sharing algorithm is inspired by industry-standard automixers. Up to 16 microphone sources can be mixed at once, with each channel having a priority setting which determines its ‘weight’ in the total system gain

General Features

16 Mono Inputs (TRS + XLR)
1 Stereo Input (TRS)
12 on-board Mix Outputs (LR, Mono Mix 1-4, Stereo Mix 1-3)
1 Stereo Matrix Out (TRS)
Qu-32 Core inside (32 Mono + 3 Stereo Input Channels)
Up to 11 Monitor Mixes (4 mono + 7 stereo)
4 FX Engines
4 FX Sends/Returns
4 Mute Groups
4 DCA Groups
Recallable AnaLOGIQ Preamps
iLive FX Library
dSNAKE Remote Audio Port expansion up to 38 inputs
Automatic Mic Mixer
32×32 USB Audio Interface
Qu-Drive direct Multitrack Recording/Playback on USB drives
Compatible with ME Personal Mixing System
Qu-Pad iPad App
Qu-You iPhone/Android personal monitoring app
Trim, polarity, HPF, gate, insert/ducker, 4-band PEQ, compressor and delay on all Inputs
Insert, 1/3 octave GEQ, 4-band PEQ, compressor and delay on all Mix outputs
Built-in Signal Generator
RTA with Peak Band indication
19” Rack Mountable with optional rack ears

Allen & Heath Qu-SB Specs

Mixer

Number of Analog Input Channels	16
Mix Routing	4 x Stereo FX Return
Groups	4 x Mute Group 4 x DCA Group
Meter Range	-48 to -3 dBFS Peak/Clip (+19 dBu at XLR Output)
Meter Calibration	0 dB on Meter = -18 dBFS (+4 dBu at XLR Output)

Signal Processing

Gain/Trim Range	Line: ±24 dB (Stereo Channels) Mic/Line: -5 dB to +60 dB (in 1 dB Steps)
Input Polarity	Normal/Reverse
Gate Parameters	Threshold: -72 to +18 dBu Depth: 0 to 60 dB Attack: 50 μs to 300 ms Hold: 10 ms to 5 sec Release: 10 ms to 1 sec
Compressor Parameters	Threshold: -46 to 18 dBu Ratio: 1:1 to ∞:1 Attack: 300 μs to 300 ms Release: 100 ms to 2 sec Knee: Soft / Hard
EQ	FX Returns: 4-Band Parametric
EQ Parameters	1 x HF Shelf: ±15 dB at 20 Hz to 20 kHz (Shelf or Bell Selectable) 2 x MF Notch/Peak: ±15 dB at 20 Hz to 20 kHz 1 x LF Shelf: ±15 dB at 20 Hz to 20 kHz (Shelf or Bell Selectable)
Graphic EQ	28-Band 1/3 Octave, ±12 dB 31 Hz to 16 kHz
Filters	High-Pass: 20 Hz to 20 kHz, 12 dB/Octave
Channel Output/Source Monitoring	AFL, PFL, Post-Preamp, Post-EQ, Post-FX
Internal Effects	Reverb Delay Reverb (Gated) ADT Chorus Phaser Flanger
Real Time Analyzer	31-Band 1/3 Octave, 20 Hz to 20 kHz
Audio Delay	Adjustable Up to 170 ms

Digital Audio

Sample Rates	48 kHz Stereo Record: 48 kHz Stereo Playback: 44.1 / 48 kHz Multitrack Record: 48 kHz Multitrack Playback: 48 kHz
Bit Depth	AD/DA Conversion: 24-Bit Delta Sigma Stereo Record: 24-Bit Stereo Playback: 16 / 24-Bit Multitrack Record: 24-Bit Multitrack Playback: 24-Bit
Latency	1.2 ms (Mic Input to XLR Output) 0.7 ms (Mic Input to AES Output)

Performance

dBFS Reference Level	+18 dBu = 0 dBFS
Headroom	+18 dB
Frequency Response	20 Hz to 20 kHz +0/-0.5 dB
Max Input Level	Mic Input: +19 dBu Line Input: +29 dBu Aux Input: +22 dBu (+4 dBu) +18 dBu (0 dBu)
Output Level	Aux Output: +22 dBu (Max) +4 dBu (Nominal) Line Output: +22 dBu (Max) +4 dBu (Nominal)
Analog Dynamic Range	112 dB
I/O Impedance	Aux Input: > 7 Kilohms Aux Output: < 75 Ohms XLR Line Output: < 75 Ohms XLR Mic/Line Input: > 5 Kilohms 1/4″ Mic/Line Input: > 10 Kilohms
Noise Floor	-90 dBu (with Inputs Muted)
THD+N	Mic/Line Input: 0.0005% at Unity Gain 0.001% at +30 dB Gain
Signal Generator	Sine, White, Pink, or Band-Pass Noise (Assignable to Any Mix)

Connectivity

Analog Inputs	1 x XLR Talkback Input 16 x XLR Balanced Mic Input 16 x 1/4″ TRS Balanced Line Input 2 x 1/4″ TRS Balanced Aux Input (1 Stereo Pair, Half-Normalled)
Analog Outputs	10 x XLR Balanced Mix Output 2 x XLR Balanced Main Output 2 x 1/4″ TRS Balanced Output (1 Stereo Pair)
Digital I/O	1 x RJ45 (Network) 1 x etherCON dSNAKE (I/O)
USB	1 x USB Type-A (External Memory) 1 x USB Type-B (USB 2.0, Audio Streaming)

Recording

Max Multitrack Recording

18 Tracks

Power

AC Input Power	100 to 240 VAC, 50 / 60 Hz
Power Consumption	150 W (Maximum)

Physical

Rackmount Size	4 RU
Operating Temperature	32 to 95°F / 0 to 35°C
Dimensions	17.1 x 6.9 x 6.3″ / 435.5 x 174.5 x 161 mm (Desk-Mounted) 19 x 5.3 x 7″ / 483 x 135.4 x 177 mm (Rack-Mounted)
Weight	12.7 lb / 5.8 kg

Packaging Info

Package Weight	13.6 lb
Box Dimensions (LxWxH)	21.6 x 10.3 x 10.2″

Additional information

Weight	1 lbs
Dimensions	40 × 20 × 20 in

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