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Allen & Heath GL2800

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Quick Overview

GL2800 is a compact, dual function, LR, M, 8 group, 10 aux, 12×4 matrix console. Frame sizes range from 24 to 48 channels including 2 stereo channels.

Product Description

GL2800 is a compact, dual function, LR, M, 8 group, 10 aux, 12×4 matrix console. Frame sizes range from 24 to 48 channels including 2 stereo channels.




  •  24, 32, 40 and 48 channel frames
  • LR and M main mixes
  • 8 Audio groups with pan and routing to LR and M
  • 10 Auxes including a dedicated stereo send
  • 2 multifunction stereo channels each with mic and stereo line inputs
  • 2 extra dual stereos provide 4 summed or independent stereo returns
  • Fully featured 12×4 Matrix
  • Proper dual functionality for FoH/Monitor mixing
  • Recording capable with channel direct outputs
  • M can be used for centre/sub mix, LR mono sum, or engineers wedge
  • Matrix external inputs with level trims and common input capability
  • Stereo channel mic inputs can cross patch into matrix for ambience feed
  • Responsive 4 band, 2 sweep EQ
  • 100Hz channel high pass filters
  • Individual phantom power and polarity switching
  • Wide angle channel and master meters
  • Dedicated stereo monitor meters
  • Per channel pre/post fader aux switching for full flexibility
  • Recessed pre/post-EQ aux switching per channel
  • Internal jumper plugs for aux, direct out and other options
  • Mutes on all fader masters
  • 100mm dust protected faders
  • Assignable talkback to all outputs, includes a talk switch latch mode
  • 1kHz oscillator / pink noise generator with patchable external output
  • 2-track monitoring and replay to LR
  • 3 headphones/earpiece sockets and local monitor outputs
  • Electronically balanced XLR outputs with +26dBu drive capability
  • Preamp 74dB range with +34dBu input capability for mic or line
  • Ultra low noise mix head amp design
  • Uses RPS11 high performance external linear power supply
  • Built-in combiner for redundant backup supply
  • Individual circuit card assembly with nutted pots
  • Sys-Link V2 console input/output linking option
  • 4-pin XLR lamp sockets – Allen & Heath LEDlamp available




Total # Of Inputs 24
Mic/Line Inputs 24 Line: 1/4″ Phone

24 Mic: 3-pin XLR

Stereo Line Inputs 2 Stereo: L/R 1/4″ Phone
In-Line Inputs/Returns No
AUX Sends 6 Aux Sends: 1/4″ Phone
AUX Returns No
Inserts 24 Line: TRS 1/4″ Phone

4 Group: TRS 1/4″ Phone

2 Stereo Out: TRS 1/4″ Phone

BUS (Group) Outputs 4 Group Outputs: Balanced 3-pin XLR
2 Trk Master I/O Main Outputs: Left / Right / Mono (sub) Balanced 3-pin XLR

2Trk In: L/R 1/4″ Phone

2Trk Out: L/R 1/4″ Phone

ALT I/O Matrix –

4 EXT In: 1/4″ Phone

4 MTX: 1/4″ Phone

Monitor Outputs Monitor Out: L/R 1/4″ Phone
EQ Section Gain (each band): +/- 15dB

Mono Channels-

Low: Shelf 80Hz

Low Mid: 35Hz – 1kHz Q=1.8

High Mid: 500Hz – 15kHz Q=1.8

High: Shelf 12kHz

Stereo Channels –

Band Frequencies: 60Hz, 250Hz, 2.5kHz, 12kHz Q=1.8

Filter (mono inputs): Switch 100Hz

Solo/Mute Mute / PFL on all channels
Channel Level Control 100mm faders
Trim/Gain Control Sealed Rotary Potentiometers
Phantom Power +48 Volt Phantom Power (all mono channels)
Metering 12 Segment Stereo Peak LEDs
Frequency Response 20Hz to 30kHz

Mic to Main output (+40dB gain): +0/-0.5dB

Line to Main output (0dB): +0/-0.5dB

Dynamic Range not specified by manufacturer
Signal-to-Noise Ratio (22Hz to 22kHz unweighted)

Mic EIN with 150ohm source: -128dB

Residual output noise main outputs: < -98dBu

Main Mix noise (nothing routed): < -92dBu

Main Mix noise (24 channels routed): < -86dBu (90dB S/N)

Total Harmonic Distortion (THD) THD + Noise (mic In +40dB gain): < 0.004%

THD + Noise (line in 0dB gain): < 0.006%

Power Supply Up to 2 x 4pin XLR-F Internal (16,24,32)
Dimensions 32.16″ x 5.9″ x 25″ (817 x 15 x 63.5cm) (WxHxD)
Weight 47.3 lb (21.5 kg)


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