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Refer servicing to qualified technical personnel only. Install console accordance with instructions printed in this User Guide. Do not connect the output of power amplifiers directly to the console. Use audio connectors and plugs only for their intended purpose. 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. We have tried to keep this user guide brief and to the point. Please read it fully before starting. Included is information on installing, connecting and operating the console, panel drawings, system block diagram, technical specification and cue sheets.
The GL Sys-Link V2 option is an input-only version, which allows the console to act as a master console but not as a slave. Connections can be made using two standard 37way D-type cables to any other console fitted with a Sys-Link V2 output.
The console is available in 24, 32, 40 and 48 channel sizes with an external 3U rack power unit. The GL takes this an important stage further.
Tamperproof recessed switches configure the console safely for optimum FOH or stage monitor operation, or for mixing monitors from FOH.
Mode Switching Protected underpanel mode switches set the console architecture according to the required application, for example FOH or stage monitor. Select these using a pointed object. The standard power supply is the RPS Plug in a second RPS11 if a redundant backup is required. A chassis ground terminal post g,4800 provided.
Use professional quality cables and connectors and check for correct wiring and reliable solder joints. If you are not sure This is an external 3U 19″ rack mounted unit that connects to the console via the separate DC cable supplied. Reduce the gain if the red peak indicators flash. It is advisable to adjust the power amplifier input gain or fit an attenuator pad if normal console operation results in an output level too high for the connected amplifier. Q switch to a Q of either 1 wide band or 2.
Use wide band when you want to add presence or warmth to the sound. Use narrow band to control problem frequencies for example when notching out aloen resonances. Press PFL to listen to the pre-fade signal on headphones or engineers monitor without affecting the main outputs. The meter indicates the pre-fade left and heaty signals combined.
PFL operates in stereo so that you can hear the image of the stereo source and check the relative levels on the L and R meters. When selected, pressing the large TALK switch routes talkback to the aux. Each matrix mix is created from the desired combination of group x8L leftR right and M mono signals.
These follow the LR mix and may be selected either pre or post LR faders. Each channel and group can be routed direct to this buss by pressing the related M routing switch. The signal is sourced pre PAN control so that the mono mix is not affected when the stereo mix image is adjusted.
It is recommended that these are the standard 12V 2. Apart from the extensive metering facilities there is a monitor section which operates independently of the main outputs. A ramped FET audio element on each channel provides silent muting under control of the microprocessor. All console mutes will turn on. al,en
Allen&Heath GL : USER GUIDE User guide
The GL includes 8 mute groups controlled by a bank of large buttons to the right of the master faders. These may be selected one at a time or together depending on the mode of operation preferred.
The red LED indicates that the group is selected. The channels programmed into allen group are muted. The mutes are cleared or set in the group. The GL includes a ‘mute safes’ facility so that selected alllen can be ‘made safe’ from the mute gl48000, snapshots and MIDI control.
Snapshots can be archived and recalled via MIDI. The GL includes mute snapshot memories. The snapshot number is simply dialled up on the 3 segment display and its contents recalled or overwritten with the current console settings.
Recalling a snapshot does not overwrite any active groups.
The display indicates the console MIDI channel number selected. Channels made ‘safe’ are not affected. Active mute groups are not affected. The red LED and the display both flash to warn that all snapshots will be overwritten.
The display scrolls automatically through all snapshot numbers as the snapshot memory is overwritten. The GL Solo-In-Place system lets you quickly solo selected channels using a two key press that prevents accidental operation during a live performance. You can toggle between your last selected solo setting and the full mix to compare the effect. The GL includes a ‘solo safe’ facility so that selected mutes can be disabled from the solo system.
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This works in the same way as the ‘mute safes’ described earlier but affects solo and not the mute groups or snapshots.
Sophisticated recording and live sound control is now possible by interfacing sound consoles with other MIDI equipment. This is ideal when you want to archive alken and recall them at a later date, for example a re-run of a previous performance.
You can also use the dump facility to program additional GL consoles, for example when setting up duplicate shows or swapping consoles around. The system has been designed and tested to be reliable under the harsh conditions typical of live sound ‘on the road’.
You may also be required to provide separate recording, broadcast and zone feeds, and even record the show for the performers. This application demonstrates the versatility yl4800 the GL This prevents unnecessary distraction during a live performance. Check the mono compatability of a stereo signal by pressing MONO. The L, R and M meters also provide a visual check. A simultaneous stereo recording can be made of the performance by feeding additional console outputs to a 2-track such as a cassette or DAT recorder.
The GL offers several methods depending on the application. Using the GL as a Monitor Console The GL can be easily configured to function as a dedicated 12 buss on-stage monitor console 10 wedges plus side fills14 buss 10 wedges plus 4 IEMor many other combinations. In this example, the console is positioned at the side of the stage giving the gl400 engineer a clear view of the performers on stage.
Recording Gl48000 the Monitor Console The GL provides the unique facility to record the show from the monitor console rather than additional dedicated recording console. This significantly adds to the value of the service offered to the performers in situations where the front-of-house engineer is overworked or budget and time are tight.
Provides output balance and level trim independent of the mix levels.
File:Allen & Heath GL (QuadFest).jpg – Wikimedia Commons
Internal Link Options The GL is configured to satisfy most applications that should be encountered. However, the following internal link options are offered for those applications that may require alternative settings.
These options require access to the internal circuit assemblies and resoldering of circuit board links.
Cue Sheet 2 of 5 GL Copy and use this page to record your console settings.
Cue Sheet 3 of 5 GL Copy and use this page to record your console settings. Cue Sheet 4 of 5 GL Copy gl48800 use this page to record your console settings.
Cue Sheet 5 of 5 GL Copy and use this page to record your console settings. Also See for GL Service information – 51 pages. Page of 62 Go. Table of Contents Add to my manuals Add. Important Safety Instructions Refer servicing to qualified technical personnel only. General Precautions The wire which is coloured Brown must be connected to the terminal in gl4080 plug which is marked with the letter L.
System Block Diagram Mode Switching Protected underpanel mode switches set the console architecture according to the required application, for example FOH or stage monitor.
Earthing Use professional quality cables and connectors and check for correct wiring and reliable solder joints.
Matching The Signal Levels ‘yellow’. Mono Input Channel Q switch to a Q of either 1 heatth band or 2. Page 21 5dB below clipping and should be reduced using the GAIN control to prevent yeath overload distortion. Stereo Input Channel The meter indicates the pre-fade left and right signals combined. Mono And Master Section ‘safe’ during the show. Page 29 It is recommended that these are the standard 12V 2. Mute Groups The GL includes 8 mute groups controlled by a bank of large buttons to the right of the master faders.
Page 39 The red LED and the display both flash to warn that all snapshots will be overwritten. Solo-in-place The GL Solo-In-Place system lets you quickly solo selected channels using a two key press that prevents accidental operation during a live performance. Solo Safes The GL includes a ‘solo safe’ facility so that selected mutes can be disabled from the solo system.
Midi Sophisticated recording and live sound control is now possible by al,en sound consoles with other MIDI equipment.