ALLEN&HEATH GL4800 USER GUIDE Publication AP6150 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 high level of performance and reliability for which this equipment has been designed and manufactured, read this User Guide before operating. In the event of a failure, notify and return the defective unit to Allen & Heath Limited or its authorised agent as soon as possible for repair under warranty subject to the following conditions Conditions Of Warranty 1. The equipment has been installed and operated in accordance with the instructions in this User Guide 2. The equipment has not been subject to misuse either intended or accidental, neglect, or alteration other than as described in the User Guide or Service Manual, or approved by Allen & Heath. 3. Any necessary adjustment, alteration or repair has been carried out by Allen & Heath or its authorised agent. 4. This warranty does not cover fader wear and tear. 5. The defective unit is to be returned carriage prepaid to Allen & Heath or its authorised agent with proof of purchase. 6. Units returned should be packed to avoid transit damage. In certain territories the terms may vary. Check with your Allen & Heath agent for any additional warranty which may apply. This product complies with the European Electromagnetic Compatibility directives 89/336/EEC & 92/31/EEC and the European Low Voltage Directives 73/23/EEC & 93/68/EEC. This product has been tested to EN55103 Parts 1 & 2 1996 for use in Environments E1, E2, E3, and E4 to demonstrate compliance with the protection requirements in the European EMC directive 89/336/EEC. During some tests the specified performance figures of the product were affected. This is considered permissible and the product has been passed as acceptable for its intended use. Allen & Heath has a strict policy of ensuring all products are tested to the latest safety and EMC standards. Customers requiring more information about EMC and safety issues can contact Allen & Heath. NOTE: Any changes or modifications to the console not approved by Allen & Heath could void the compliance of the console and therefore the user's authority to operate it. GL4800 User Guide AP6150 Issue 1 Copyright © 2005 Allen & Heath Limited. All rights reserved Manufactured in the United Kingdom by ALLEN&HEATH Limited Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK http://www.allen-heath.com 2 GL4800 User Guide Important Safety Instructions WARNINGS Read the following before proceeding : CAUTION ATTENTION: RISQUE DE CHOC ELECTRIQUE ­ NE PAS OUVRIR Read instructions: Read and retain these safety and operating instructions for future reference. Adhere to all warnings printed here and on the console. Follow the operating instructions printed in this User Guide. Do not remove cover: Operate the console with its underside cover correctly fitted. Disconnect mains power by unplugging the power cord if the cover needs to be removed for setting internal options. Refer this work to competent technical personnel only. Power sources: Connect the console to a mains power outlet only of the type described in this User Guide and marked on the rear panel. Use the power cord with sealed mains plug appropriate for your local mains supply as provided with the console. If the provided plug does not fit into your outlet consult your service agent for assistance. Power cord routing: Route the power cord so that it is not likely to be walked on, stretched or pinched by items placed upon or against it. Grounding: Do not defeat the grounding and polarisation means of the power cord plug. Do not remove or tamper with the ground connection in the power cord. WARNING: This equipment must be earthed. 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 conditions. Do not place containers of liquids on it which might spill into any openings. Do not obstruct the rear and top ventilation slots or position the console where the air flow required for ventilation is impeded. If the console is to be operated in a flight case, plinth or other furniture ensure that it is constructed to allow adequate ventilation. Ventilation: Heat and vibration: Do not locate the console in a place subject to excessive heat or direct sunlight as this could be a fire hazard. Locate the console away from any equipment which produces heat or causes excessive vibration. Servicing: Switch off the equipment and unplug the power cord immediately if it is exposed to moisture, spilled liquid, objects fallen into the openings, the power cord or plug become damaged, during lightning storms, or if smoke, odour or noise is noticed. Refer servicing to qualified technical personnel only. Installation: Install the console in accordance with the 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. GL4800 User Guide 3 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: TERMINAL European L N E LIVE NEUTRAL EARTH GND BROWN BLUE GREEN & YELLOW WIRE COLOUR USA/Canada BLACK WHITE 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. 4 GL4800 User Guide Introduction Welcome to the Allen & Heath GL4800, the latest generation of the popular GL series of multi-function audio mixing consoles. 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. For further information on the basic principles of audio system engineering, please refer to one of the specialist publications and resources available from bookshops, audio equipment dealers and the Internet. Whilst we believe the information in this guide to be reliable we do not assume responsibility for inaccuracies. We also reserve the right to make changes in the interest of further product development. We are able to offer further product support through our world-wide network of approved dealers and service agents. You can also access our Web site on the Internet for information on our full product range, our company pedigree, assistance with your technical queries, our contact details or simply to chat about matters 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. www.allen-heath.com Contents Warranty ................................................ 2 General Precautions.............................. 4 Introduction to this Guide...................... 5 Front Panel Layout ................................ 6 Range and Options ............................... 7 Introducing the GL4800....................... 8 Dimensions and Weights .................... 10 Specifications ...................................... 11 System Block Diagram........................ 12 Connectors .......................................... 14 Earthing ............................................... 17 Connecting Power............................... 18 Matching the Signal Levels ................. 19 Mono Input Channel............................ 20 Stereo Input Channel .......................... 22 Stereo Channel Applications............... 23 Group Section ..................................... 24 LR Section............................................26 Mono and Master Section ...................27 The Mute System.................................30 Mute Groups ........................................32 Mute Safes ...........................................35 Mute Snapshots...................................36 The Snapshot Display .........................37 Solo-In-Place .......................................40 Solo Safes............................................41 MIDI......................................................42 Technical Support ...............................46 Front-of-House Application .................48 On-Stage Monitor Application .............52 Multi-Speaker System Application ......55 Internal Link Options ...........................56 Cue Sheets ..........................................57 GL4800 User Guide 5 LAMP +48V -20 -30 -15 -10 -5 0dB LAMP LEV -20 -30 -15 -10 -5 0dB LEV -20 -30 -15 -10 -5 0dB LEV -20 -30 -15 -10 -5 0dB LEV -20 -30 -15 -10 -5 0dB LEV -20 -30 -15 -10 -5 0dB LEV 2TRK RETURN -5 -10 -20 -30 -2 +48V POLARITY MIC LINE 30 10 40 50 50Hz PAD POLARITY LEV MIC LINE 30 10 40 50 50Hz PAD 0dB 20 -10 10 LINE MIC GL4800 MULTI FUNCTION AUDIO MIXING CONSOLE OUT REV ON ON ON ON ON ON 0dB +5 0dB 20 -10 10 LINE MIC GAIN AFL AFL AFL AFL AFL AFL +8 +10dB XLR GAIN -14 6 60 40dB 100 30 20 OFF HPF 200 OUT REV OUT REV OUT REV OUT REV OUT REV REPLAY TO L-R -14 6 60 40dB 100 30 20 HPF 200 OFF 400Hz 400Hz 7kHz -20 -30 -15 POST PRE -10 -5 0dB POST PRE -20 -30 -15 -10 -5 0dB POST PRE -20 -30 -15 -10 -5 0dB POST PRE -20 -30 -15 -10 -5 0dB POST PRE -20 -30 -15 -10 -5 0dB POST PRE -20 -30 -15 -10 -5 0dB POST PRE -20 -30 -15 -10 -5 0dB POST PRE -20 -30 -15 -10 -5 0dB POST PRE POST PRE PFL 3k 10k OUTPUT TRIM OUTPUT TRIM OUTPUT TRIM OUTPUT TRIM OUTPUT TRIM OUTPUT TRIM OUTPUT TRIM OUTPUT TRIM POLARITY (R) AFL GRP 8 ACTIVE STEREO WIDTH 2kHz 20kHz HF GRP 1 GRP 2 GRP 3 GRP 4 GRP 5 GRP 6 GRP 7 PFL MONO REVERSE WIDE 0dB +5 ENABLE -15 ENABLE ENABLE ENABLE ENABLE ENABLE ENABLE ENABLE STEREO PFL MONO -5 -10 -20 -30 +15 STEREO GAIN Q 3k 1k 700 500Hz 15k 5k 7k 1 +16 +9 +6 HM +3 0 -3 2 +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 3 +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 4 +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 5 +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 6 +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 7 +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 8 +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 L +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 R +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 M +16 +9 +6 +3 0 -3 -6 -9 -12 -15 -20 -30 SHIFT MIDI CHANNEL MODE ACTIVE PATCH SNAPSHOT +10dB DIRECT TO L-R STEREO PFL -15 +15 -6 Q XLR STEREO SOLO IN-PLACE -15 +15 2.5kHz 12kHz 180Hz 60 45 35Hz 300 450 1kHz -9 -12 -15 LM -20 -30 HF HM -15 50 +15 100Hz 150 -15 +15 250Hz FOLLOW SML FADER FOLLOW SML FADER FOLLOW SML FADER FOLLOW SML FADER FOLLOW SML FADER FOLLOW SML FADER FOLLOW ...