Allenheath GR1 SERVICE MANUAL Manuel d'utilisateur Page 1

ALLEN&HEATH WARNING – HIGH VOLTAGES Power Supply Unit (PSU) work should only be carried out by qualified personnel. We recommend that you use

GR1USER GUIDE7CONTROL FUNCTIONSTEREOAdjusts the outputlevel of the mainL & R signals.MONOAdjusts the outputlevel of the monosignal.METERSUsed for

GR1 USER GUIDE8CONFIGURATIONThe GR1 offers unique flexibility in its ability to be configured to satisfy the exact requirements of each installation.T

GR1USER GUIDE9EARTHING THE AUDIO SYSTEMThe chassis is connected to mains earth via the power cord. FOR SAFETY REASONS NEVER REMOVE THEEARTH WIRE FROM

GR1 USER GUIDE10LINE INPUTSMONO AND STEREO LINE INPUTS2 Mono and 3 stereo electronically balanced line inputsare available on 1/4" jack sockets.

GR1USER GUIDE11ROUTING THE CHANNELS TO THE OUTPUTSEach of the 6 channels may be routed as required to a combination of the 3 outputsL, R and M to feed

GR1 USER GUIDE12PRIORITY DUCKING SYSTEMThe GR1 offers a flexible ducking system that allows one or a combination of the 3mono channels to duck (overri

GR1USER GUIDE13REMOTE CONTROL OF THE LEVELSEach of the 6 channels and the main L,R and M outputs are fed through highperformance VCA (voltage controll

GR1 USER GUIDE14LINK OPTIONS - ALARM SOURCESelects either the external alarm inputor local MIC 6 as the local alarmsource and feed to other GR1 unitsw

GR1USER GUIDE15For output level control at the master unit only disable the L,R and Moutput level controls on the slave units by removing the INT/EXT

GR1 USER GUIDE16Set the slave unit channel selector switches to 'AUX'. This selects thecorresponding signal from the master unit. The DIR

ZONE MIXERGR1SERVICEMANUALPUBLICATION AP2059

GR1USER GUIDE17

ALLEN & HEATHSection C - 1R1SM1CTECHNICAL DIAGRAMSSECTION CThis section includes the technical diagramsand illustrations

ALLEN & HEATHSection C - 2R1SM1TECHNICAL BULLETIN Page:Date:Issue No.Authorised:Attention Service Departments of:File with GR1 Service ManualTitle

ALLEN & HEATH2 R1SM1INTRODUCTIONThe information presented in this manual is intended for competent technical personnel to carry out service and pr

ALLEN & HEATHSection C - 3R1SM1Front Panel AssemblyRear Panel Assembly

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ALLEN & HEATH3R1SM1CONTENTSSECTION AINTRODUCTION ...

ALLEN & HEATHSection A - 1R1SM1ASECTION AGR1 USER GUIDEThe user guide is reprinted here for easyreference during service operations.

GR1USER GUIDE3INTRODUCTIONThe GR1 continues ALLEN & HEATH’s commitment to provide high quality audio equipment engineered to meetthe exacting requ

GR1 USER GUIDE4INTERCONNECTIONSWhere possible use balanced connections for the inputs and outputs to minimise noise pick-up. Avoid running audiocables

GR1USER GUIDE5SPECIFICATIONCONNECTIONSPOWER REQUIREMENTS: 50/60Hz 25VA maxMains voltage factory set for local requirements.Mains input protection fuse

GR1 USER GUIDE6INSTALLATIONThe GR1 fits into a 1U space in a standard 19" rack system. Alternatively the unit may be mounted into a cabinetor pl