VERSATILE FRONT OF HOUSE CONSOLE As a FOH console, the GL4000 gives you 8 sub groups and L, R, Centre Main outputs all with insert points. The centre (mono) output can be routed directly from the channels and groups and/or LR outputs to feed a centre cluster or sub bass system. Unique to the GL4000, you can also fill out the centre by mixing in just the right amount of LR signal to supplement the centre mix itself. If you’re running a mono PA you could use L-R as an additional pair of subgroups. All 10 aux outputs include faders, buss meters, XLRs and inserts, an important combination of features hard to find on other consoles. A 4x11 matrix is available for delay speaker feeds or broadcast and recording outputs. The matrix sends can be switched pre or post the Source Fader. Stereo recording from the main PA mix is seldom adequate as the L-R mix is typically vocal heavy to compensate for the high acoustic level of the backline stage sound. Recording from the matrix lets you adjust the balance to get closer to that ’studio quality’ mix. DEDICATED STAGE MONITOR CONSOLE Set up as a monitor console, you have 12 mixes (10 independent monitors and LR sidefill or stereo monitor), and an independent wedge output with fader for the engineer. Insert points allow easy connection to graphic equalisers on every send. In addition, the group and matrix outputs can be used for extra sends if needed. You can even record the show from the monitor console rather than bringing in an additional recording console.
INPUT IMPEDANCE MIC > 2K ohm BALANCED LINE INPUT > 10K ohm BALANCED STEREO LINE INPUT > 10K ohm BALANCED INSERT RETURN > 10K ohm BALANCED 2-TRACK RETURN > 7K ohm UNBALANCED INPUT GAIN MIC +6dB TO +60dB VARIABLE MIC/LINE + PAD -14dB TO +40dB VARIABLE LINE INPUT -14dB TO +40dB VARIABLE STEREO LINE INPUT OFF TO +10dB VARIABLE INSERT RETURN 0dB 2-TRACK RETURN OFF TO +10dB VARIABLE MAXIMUM INPUT LEVEL MIC/LINE INPUT +15dBu MIC/LINE + PAD +35dBu LINE INPUT +35dBu STEREO LINE INPUT +21dBu 2-TRACK RETURN +35dBu OUTPUT IMPEDANCE MAIN OUTPUTS < 75 ohm DIRECT OUTPUTS < 50 ohm HEADPHONE OUTPUT TO DRIVE > 8 ohm INSERT SEND < 50 ohm MAXIMUM OUTPUT LEVEL MAIN OUTPUTS +27dBu INTO BALANCED LOAD OF >600 ohm JACK OUTPUTS +21dBu INTO LOAD OF >2K ohm OPERATING LEVELS MAIN OUTPUTS +4dBu JACK OUTPUTS 0dBu INTERNAL OPERATING LEVEL -2dBu INTERNAL HEADROOM +23dB CHANNEL INSERTS 0dBu OUTPUT INSERTS -2dBu MIDI SPECIFICATION MUTES TRANSMIT AND RECEIVE MIDI NOTE ON MESSAGES USES NOTE VELOCITY FOR MUTE STATUS FROM NOTE C0 (18H) TO B5 (5FH) PATCHES TRANSMIT AND RECEIVE MIDI PROGRAM CHANGE MESSAGES FROM 0 TO 127 CONSOLE DUMP IN AND OUT USES A&H ERROR DETECTING SYSTEM EXCLUSIVE MESSAGES FREQUENCY RESPONSE MEASURED 20Hz TO 20kHz REF 1kHz MIC TO MIX (+40dB) +0/-0.5dB LINE TO MIX (0dB) +0/-0.5dB DISTORTION THD + NOISE MEASURED @ 1kHz +20dBu MIC TO MIX (+40dB) 0.006% LINE TO MIX (0dB) 0.006% CROSSTALK REFFERED TO DRIVEN CHANNEL @ 1kHz CHANNEL TO CHANNEL >100dB MUTE SHUTOFF >85dB FADER SHUTOFF >90dB C.M.R.R. COMMON MODE REJECTION @ 1kHz MIC (+40dB) >80dB LINE (0dB) >55dB NOISE PERFORMANCE MEASURED rms 22Hz TO 22kHz BANDWIDTH MIC EIN -128dB 150ohm SOURCE LINE PRE-AMP (0dB) <-91dBu RESIDUAL OUTPUT NOISE <-98dBu (-102dB S/N) MIX NOISE, NOTHING ROUTED <-87dBu (-91dB S/N) MIX NOISE, 24 CHANNELS ROUTED <-81dBu (-85dB S/N) 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 OPTIONAL VU METERBRIDGE ILLUMINATED VU MOVING COIL METERS
Allen Heath GL4000M-8-48A
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