Allen&Heath GL4000
Technical
Specifications
0 dBu = 0.775 Volts rms
Operating levels
Internal operating level 0dBu - channels, -2dBu mix
Internal headroom +21dB channels, +23dB mix to output
Max outputs balanced +27dBu >2k ohm max load
Unbalanced +21dBu >2k ohm
Channel inserts 0dBu
Output inserts -2dBu
Frequency Response
Measured 20Hz
to 20khz ref 1khz
Mic to mix (+40dB) +0/-0.5dB
Line to mix (0dB) +0/-0.5dB
Metering
Input meters 4 segment led (signal, 0, +6, peak)
Mix meters 4 segment led (signal, 0, +6, peak)
Output meters 12 segment led
Led meter response Peak reading
Peak indicators 0n 5dB before clipping
Signal indicators on -20dBu
Integral VU meterbridge illuminated VU moving coil meters