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GL2400

 User Guide 

General Precautions 

 

Damage   

 

To  prevent  damage  to  the  controls  and  cosmetics  avoid 

placing heavy objects on the control surface, scratching the surface with 
sharp objects, or rough handling and vibration. 

Environment   

 

Protect  from  excessive  dirt,  dust,  heat  and  vibration 

when operating and storing.  Avoid tobacco ash, smoke, drinks spillage, 
and exposure to rain and moisture.  If the console becomes wet, switch 
off  and  remove  mains  power  immediately.  Allow  to  dry  out  thoroughly 
before using again. 

Cleaning 

   

Avoid  the  use  of  chemicals,  abrasives  or  solvents.  The 

control panel is best cleaned with a soft brush and dry lint-free cloth. The 
faders,  switches  and  potentiometers  are  lubricated  for  life.  The  use  of 
electrical lubricants on these parts is not recommended.  The fader and 
potentiometer  knobs  may  be  removed  for  cleaning  with  a  warm  soapy 
solution.  Rinse and allow to dry fully before refitting them. 

Lifting  

 

To  avoid  injury  to  yourself  or  damage  to  the  equipment  take 

care when lifting, moving or carrying the console. 

Transporting   

 

The  console  may  be  transported  as  a  free-standing 

unit or mounted in a purpose built flight case.  We recommend that the 
console  is  surrounded  by  shock  absorbent  foam  to  protect  it  from 
damage during transit.  Always use adequate packing if you need to ship 
the unit.  Protect the controls to avoid damage when moving the console. 

Hearing  

 

To avoid damage to your hearing do not operate any sound 

system at excessively high volume.  This also applies to any close-to-ear 
monitoring  such  as  headphones  and  IEM  transducers.    Continued 
exposure  to  high  volume  sound  can  cause  frequency  selective  or  wide 
range hearing loss.  
 
 

 Important Mains plug wiring instructions. 

The  console  is  supplied  with  a  moulded  mains  plug  fitted  to  the  AC 
mains power lead. Follow the instructions below if the mains plug has 
to  be  replaced.    The  wires  in  the  mains  lead  are  coloured  in 
accordance with the following code: 

WIRE COLOUR 

TERMINAL 

European 

USA/Canada 

LIVE 

BROWN 

BLACK 

NEUTRAL 

BLUE 

WHITE 

EARTH GND 

GREEN & YELLOW 

GREEN 

 

The  wire  which  is  coloured  Green  and  Yellow  must  be  connected  to 
the terminal in the plug which is marked with the letter E or with the 
Earth symbol.  

This appliance must be earthed. 

The wire which is coloured Blue must be connected to the terminal in 
the plug which is marked with the letter N. 

The wire which is coloured Brown must be connected to the terminal 
in the plug which is marked with the letter L. 

Ensure that these colour codes are followed carefully in the event of 
the plug being changed. 

82

Summary of Contents for GL SERIES

Page 1: ...ALLEN HEATH USER GUIDE Publication AP5597 GL2400...

Page 2: ...eath com Limited One Year Warranty This product is warranted to be free from defects in materials or workmanship for a period of one year from the date of purchase by the original owner To ensure a hi...

Page 3: ...t remove or tamper with the ground connection in the power cord Water and moisture To reduce the risk of fire or electric shock do not expose the console to rain or moisture or use it in damp or wet c...

Page 4: ...is surrounded by shock absorbent foam to protect it from damage during transit Always use adequate packing if you need to ship the unit Protect the controls to avoid damage when moving the console He...

Page 5: ...t about audio To help us provide the most efficient service please keep a record of your console serial number and date and place of purchase to be quoted in any communication regarding this product h...

Page 6: ...6 2 3 GRP 4 OO GRP OO 1 GRP O O GRP 2 O O 3 6 4 GRP 6 GRP O 6 O 6 O 1 6 GRP GRP O 6 O O EXT O 6 EXT O 6 IN IN O LEVEL OO 6 O 6 O O R L O 6 O 6 2 O O 3 4 GRP GRP O 6 O 6 O 1 GRP GRP O 6 O EXT O 6 IN O...

Page 7: ...UST BE EARTHED BY THE POWER CORD ATTENTION REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING T1 6A L...

Page 8: ...nputs with level trims and common input capability 2 stereo channels each with mic and dual stereo line inputs Stereo channel mic input can cross patch into matrix for ambience feed Stereo channel lin...

Page 9: ...ts Extensive listening evaluation together with solid engineering practice have ensured the console achieves accurate sound reproduction under all conditions Capability We know a thing or two about Du...

Page 10: ...urpose Ensure no part of the case or its lid touches the controls or connectors If you include a rear doghouse to house the connections make sure the cables can be supported in a way that prevents put...

Page 11: ...sole on press the ON OFF switch next to the IEC mains input socket To turn the console off press this switch again Connecting a backup supply A socket is included for plugging in an optional backup po...

Page 12: ...2 30 AUX 3 29 AUX 4 28 AUX 5 27 AUX 6 26 PFL 25 AFL 24 nc 23 nc 22 nc 21 nc 20 14 GRP 3 15 GRP 2 16 GRP 1 17 R 18 L 19 0V CHS GRP 3 33 GRP 2 34 GRP 1 35 R 36 L 37 SYS LINK II OUTPUT OPTION 1 ground 2...

Page 13: ...hile keeping the signal shielding down the length of cable WARNING For operator safety do not remove the ground earth connection in the power lead of the console or connected equipment To avoid interf...

Page 14: ...LINE IN Stereo inputs ST1 and ST2 feed channel 15 and ST3 and ST4 feed channel 16 respectively or can be routed directly to LR These inputs use TRS jacks ST1 3 are unbalanced ST2 4 are balanced Unbal...

Page 15: ...independent sources This is ideal for adding mono or stereo ambience to recordings or in ear monitors fed from the matrix 2 TRACK IN and OUT Unbalanced TRS jack outputs and TRS inputs connect to popul...

Page 16: ...the faders to balance each signal in the mix To ensure optimum gain structure we do not recommend the practice of setting the faders to 0 and mixing using the GAIN controls HPF Switches in the channe...

Page 17: ...s and direct output but does not affect the insert send The red indicator lights when the channel is muted Always mute the channel when switching phantom power or plugging the cables and sources PFL P...

Page 18: ...a mono source may be plugged in to feed both left and right sides of the stereo channel Each input has its own level control to adjust from fully off to 16dB gain Centre position is unity 0dB gain Ro...

Page 19: ...e monitors You can select any combination for the FOH and monitor mode for example just 3 4 giving you two fader subgroups two monitor sends on faders and main LR mix Note The groups always feed the m...

Page 20: ...same type used on stage to listen to and check the various monitor mixes being sent to the performers Together with the group aux REV function the GL2400 can be configured as a compact yet fully feat...

Page 21: ...trices or an independent source to each Plug into EXT1 only to feed one source to all four matrix EXT IN controls Plug L into EXT1 and R into EXT2 only to feed a stereo source to matrix 1 2 and 3 4 So...

Page 22: ...onnect unbalanced sources or cables to inputs with phantom power selected To avoid loud clicks do not press the TALK switch when plugging or unplugging the talkback microphone First select the source...

Page 23: ...16dB dynamic range The signal can pass through many stages which affect its level within the console the channel its EQ fader pan a group mix and its fader on to the main LR mix with its master fader...

Page 24: ...ne of the sub mid or HF drivers is faulty With the noise sent to several speakers at the same time you can listen for comb filtering effects and the severe phasing effect which indicates that one of t...

Page 25: ...plugged into a console with 4dBu outputs connected to a 0dBu input DSP speaker manager or an operator using an SPL sound pressure level meter to measure sound intensity dBu Relative to 0 775Vrms profe...

Page 26: ...5 10 20 L R 1 2 3 4 30 00 24 PFL 10 5 0 5 10 20 L R 1 2 3 4 30 00 17 32 31 30 29 28 27 26 25 M R L 4 3 2 1 10 5 0 5 30 00 20 10 10 5 0 5 30 00 20 10 10 5 0 5 30 00 20 10 10 5 0 5 30 00 20 10 10 5 0 5...

Page 27: ...control of the appropriate main output complete with mute AFL and LED bar meter In Monitor mode the aux outputs are routed to the console main XLR sockets for electronically balanced drive with inser...

Page 28: ...in line delay processor As a rule of thumb delay 1mS per foot difference between the listener and the fill and the listener and the main speakers Now add a few milliseconds Haas effect delay so the li...

Page 29: ...amps produce an accurate and noise free recording Create a stereo recording from the main LR output or from a pair of matrices as described above if recording and mixing live at the same time To recor...

Page 30: ...to adjust the overall volume of the PA Typically the LR tops use fader masters and the aux is on a rotary master The GL2400 overcomes this with an innovative mode switch above the master faders that...

Page 31: ...ed the channel Adjust the gain and balance between the left and right microphones using the two mic GAIN controls Route ST1 to LR as a simple effects return or source input The other channel can be us...

Page 32: ...B S N LR mix noise 16 routed 86dBu 90dB S N Group mix noise 16 routed 86dBu 90dB S N Aux mix noise 16 routed 92dBu 90dB S N Mix noise 16 line 0dB gain 86dB S N Channel HPF 12dB octave below 100Hz Mono...

Page 33: ...2dBu 20dBu max Electronic balance option 75 ohm 4dBu 26dBu max Direct out TRS impedance balanced 75 ohm 0dBu 20dBu max Matrix out TRS impedance balanced 75 ohm 2dBu 20dBu max Electronic balance optio...

Page 34: ...TO LR 2dBu 4dBu BAL OPTION MONITOR RING RIGHT TIP LEFT PHONES OUT AUX 10dB boost AUX MIX GRP AUX REV SL INSERT 2dBu GRP MIX SL L R 3 4 1 2 PAN PRE PRE 10dB boost AUX AUX MIX LR AUX REV SL INSERT 2dBu...

Page 35: ...screws holding the base to the rear and underside of the chassis Carefully lift off the base Configure the internal options Fit any options required referring to the instructions provided Set the opti...

Page 36: ...ou only change these settings if absolutely necessary Stereo Mono aux source The stereo channels feed the auxes with a mono sum of L R This can be changed so that L feeds the odd numbered auxes and R...

Page 37: ...entation and make sure its legs are correctly aligned with the socket Test the output once the work is complete You should measure the same level but opposite polarity signal between hot and ground an...

Page 38: ...1 GRP GRP O 6 O EXT O 6 IN AFL MUTE AFL MUTE REV AFL REV AFL AFL REV AFL REV REV AFL REV AFL AFL AFL MUTE MUTE AFL AFL AFL MUTE MUTE MUTE AFL MUTE PAN GRP2 GRP1 PAN TO LR PAN TO LR GRP4 GRP3 TO LR TO...

Page 39: ...6 O O PRE POST O O 6 EQ IN POLARITY 100Hz 12k 80Hz ODD PAN L EVEN R PRE AUX AUX 4 3 AUX AUX 2 1 O O 6 POST O O 6 O O 6 O O 6 15 LF 15 15 15 180 45 LM 35Hz 70 15 400 1k 250 15 PAD 3k HM 700 500Hz 15 1...

Page 40: ...O O 6 O O 6 15 LF 15 15 15 180 45 LM 35Hz 70 15 400 1k 250 15 3k HM 700 500Hz 15 1k 6k 15k 4k 15 HF GAIN 20 0 50 40 48V 30 6 AUX AUX 5 MUTE 6 O O PRE POST O O 6 EQ IN POLARITY PRE AUX AUX 4 3 AUX AUX...

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