SAFETY WARNING! DO NOT REMOVE THE MAINS EARTH CONNECTION!

INTRODUCTION The GL2 coninues ALLEN & HEATH s commimen o provide high qualiy audio mixing consoles engineered o mee he exacing requiremens of oday s audio business. I brings you he laes in high performance echnology and offers he reassurance of over wo decades of console manufacure and cusomer suppor. This user guide presens a quick reference o he funcion, applicaion and insallaion of he GL2. For furher informaion on he basic principles of audio sysem engineering please refer o one of he specialis publicaions available from bookshops and audio equipmen dealers. Whils we believe he informaion in his guide o be reliable we do no assume responsibiliy for inaccuracies. We also reserve he righ o make changes in he ineres of furher produc developmen. SERVICE AND TECHNICAL SUPPORT Under normal condiions he GL2 does no require user mainenance or inernal calibraion. Any service work required should be carried ou by qualified service personnel only. We are able o offer furher produc suppor hrough our worldwide nework of approved dealers and service agens. To help us provide he mos efficien service please would you keep a record of he console serial number, and dae and place of purchase o be quoed in any communicaion regarding his produc. SAFETY WARNING! Mains elecriciy is dangerous and can kill. Mains volage is presen wihin he console power uni. Do no remove he inernal power uni or rear cover wih mains conneced. Check your mains wiring and earhing before swiching on. DO NOT REMOVE THE MAINS EARTH CONNECTION! The console chassis is always conneced o mains earh o ensure your safey. Audio 0V is conneced o mains earh wihin he power uni. Operaing he ground lif swich on he rear panel of he uni will separae audio 0V from mains earh. This swich can be used o avoid problems wih ground loops. PRECAUTIONS. l AC POWER: Check he power supply label for he correc AC mains volage seing. Allow adequae space behind he console for venilaion. l CONNECTIONS: Use audio connecors and cables only for heir inended purpose. Do no connec any source of AC or DC power o he console audio connecors. Do no connec he oupu of power amplifiers direcly o he console. l CLEANING: Avoid he use of chemicals, abrasives and solvens. The conrol panel is bes cleaned wih a sof brush and lin-free cloh. To remove subborn marks (such as chinagraph pencil) isopropyl alcohol may be used. l LUBRICATION: The faders, swiches and poeniomeers are lubricaed for life. The use of elecrical lubricans on hese pars is no recommended. l DIRT, DUST, SMOKE and MOISTURE: Preven damage o he moving pars, such as faders and poeniomeers, and cosmeics by avoiding drinks spill age, obacco ash and smoke, and exposure o rain and condensaion. Proec from excessive dir, dus, hea and vibraion. copyrigh 1993 ALLEN & HEATH Ld. All righs reserved Publicaion... AP0177 Issue 1

THE GL2 The ALLEN & HEATH GL2 offers he flexible soluion o he many requiremens of he live sound and recording environmen; wheher for conference sound... in a club... heare.. or church... for ouring... conrac hire... as well as sereo and mulirack recording. The key o his versailiy is he unique swiching arrangemen which configures he console for Fron-of-House or On-sage Monior operaion, or a combinaion of boh. 6 Aux sends swichable in combinaions of pre or pos fader, a powerful 4-band 2-sweep equaliser, dedicaed sereo channels, and comprehensive monioring faciliies combine in a compac all meal rack moun chassis o allow oal and reliable conrol of he mixed sound whaever he applicaion. FEATURES The choice of console operaing mode a he press of a swich: FRONT-OF-HOUSE Wide range 4 band 2 sweep channel equaliser wih in/ou swich 6 aux send conrols wih pre/pos fader swiching on 1-4 and 5,6 Balanced XLR Lef, Righ and Mono oupus 4 balanced XLR group oupus wih subgrouping o sereo Comprehensive maser secion providing pre or pos fader L-R monioring, auo PFL/AFL, and 2-rack record faciliy. STAGE MONITOR Balanced mic and line inpus wih wide ranging pre-amp and 4-band EQ 6 sage monior sends wih pre/pos fader swiching on 1-4 and 5,6 6 balanced XLR sage monior oupus wih insers, meering and signal checking Comprehensive maser secion providing headphones monior and separae engineers wedge oupu RECORDING 4 group oupus wih 4 ape monior inpus for mulirack recording Separae sereo mix and 2 rack record oupus 2 rack ape monioring 10 mono and 2 sereo inpu channels PLUS MULTIMODE OPERATION configures he GL2 as a sereo + mono F.O.H console wih 4 full feaure sage monior sends and 2 effecs sends 2 dedicaed sereo channels wih dual inpu sources, separae lef and righ connecors, EQ and full rouing 3-poin peak indicaors on channel inpus Mue swiches, AFL checking and peak indicaors on group and L-R oupus Insers on channel inpus, groups and L-R oupus Elecronically balanced channel inpus and group, L-R and mono oupus Inernal power uni wih ground lif swich Compac all meal consrucion for rack or plinh moun, and adapable for able op operaion. Professional qualiy assembly wih individual circui assemblies, 100mm long hrow faders, and qualiy componens used hroughou o ensure coninued reliabiliy and excepional audio performance.

0 dbu = 0.775 Vols RMS 0 dbv = 1 Vol RMS SPECIFICATION INTERNAL OPERATING LEVEL: -2 dbu INTERNAL HEADROOM:... +23 db MAX OUTPUTS:... balanced +27 dbu 600 ohms max load unbalanced +21 dbu 2kohms max load All console inpus and oupus are in-phase excep for he GROUP INSERTS METERS:... Peak responding bargraph 0VU = +4dBu a XLR oupus PEAK LEDs:... Turn on 5dB before clipping SIG LEDs:... dynamic responding Turn on a -20dBu Widh... 19.0" sandard 19" rack... (483mm) Heigh... 19.2" 11U rack space... (488mm) Deph... 3.5"... (90mm) weigh... 21lbs... (10.5kg) packed... 28lbs... (13kg) CONSTRUCTION: All meal chassis. Sandard 19" rack moun in 11U space. Single fron panel wih individual removable circui assemblies. Removable base for service access. Removable inernal power supply uni. FREQUENCY RESPONSE: 20Hz o 20kHz +0/-1dB DISTORTION:. THD 0.01% Line in o mix ou a 1kHz CROSSTALK:. oupu mue beer han 100 db a 1kHz channel mue beer han 90 db a 1kHz fader shuoff beer han 90 db a 1kHz NOISE:... 22Hz o 22kHz MIC EIN -127.5 db ino 150 ohms LINE pre-amp a 0dB -88 dbu MIX noise -85 db ref 0VU POWER REQUIREMENTS: 50/60Hz 40W max Mains volage se for local requiremens. PHANTOM POWER: +48V DC 50mA Channel XLR inpus individually swiched CONNECTIONS INPUTS: MIC IN... XLR... pin 2 ho, 3 cold balanced... 2 kohms... variable -60 o -10dBu LINE IN... XLR... pin 2 ho, 3 cold balanced... 10 kohms... variable -40 o +10 dbu or 1/4" JACK... ip ho, ring cold balanced... 10 kohms... variable -40 o +10 dbu STEREO IN A... 1/4" JACK... ip ho, ring cold unbalanced... 20 kohms... variable -20 o +22 dbu STEREO IN B... RCA PHONO... unbalanced... 20 kohms... variable -20 o +22 dbu RETURN IN... 1/4" JACK... ip ho, ring gnd unbalanced... >10kohms... variable -10 dbv min 2-TRACK RETURN... RCA PHONO... unbalanced... >6 kohms... -10 dbv INSERT RETURN... 1/4" JACK... ip send, ring re unbalanced... >6 kohms... -2dBu OUTPUTS: L-R OUT... XLR... pin 2 ho, 3 cold balanced... 50 ohms... +4 dbu +27 dbu max MONO OUT... XLR... pin 2 ho, 3 cold balanced... 50 ohms... +4 dbu +27 dbu max GROUP OUT... XLR... pin 2 ho, 3 cold balanced... 50 ohms... +4 dbu +27 dbu max AUX OUT... 1/4" JACK... ip ho, ring gnd unbalanced... 75 ohms... variable +21 dbu max 2-TRACK SEND... RCA PHONO... unbalanced... 1 kohm... -10 dbv INSERT SEND... 1/4" JACK... ip send, ring reunbalanced... 75 ohms... -2 dbu. +21 dbu max MONITOR OUT... 1/4" jack... ip lef, ring righ unbalanced... 100 ohms... variable +21 dbu max PHONES OUT... 1/4" jack... ip lef, ring righ for sereo headphones 8 o 400 ohms

INSTALLING THE CONSOLE The GL2 fis ino an 11U space in a sandard 19" rack sysem. Alernaively he console may be adaped for plinh or able op operaion. 19" rack widh Provide adequae space behind he rear of he console power uni for venilaion. The panel may feel warm around he power uni. This is quie normal as he chassis acs as a heasink for he inernal power supply componens. 11U space The wo M3 base securing bols each side align wih mouning recesses in he rack sysem. Moun he console using 4x M6 bols each side for maximum srengh. These should be provided by he supplier of he rack ki. The heigh does no include he conrol knobs (add 20mm) or connecor nus (add 8mm). The rack should allow a minimum side o side clearance of 450mm. The GL2 has wo suppor fee fied o he fron of he base o se he correc angle (14 degrees) for able op operaion wih adequae clearance for he connecors. Suppor he rear of he console o achieve his angle. Operaion in his way prevens inerference wih he connecors and akes up he minimum of able space. PRECAUTION! TO AVOID DAMAGE TO THE INTERNAL ASSEMBLIES DO NOT FIT SCREWS THROUGH THE HOLES IN THE SIDES OF THE CONSOLE. SECURE TO EXTERNAL BRACKETS OR FITTINGS THROUGH THE TOP PANEL RACK MOUNTING HOLES. EARTHING THE AUDIO SYSTEM The console chassis is conneced o mains earh via he power cord. FOR SAFETY REASONS NEVER REMOVE THE EARTH WIRE FROM THE MAINS PLUG. The console audio 0V is conneced o mains earh wihin he console power uni by he ground lif swich. To preven mains born and exernal inerference pick-up on he audio signal i is imporan ha his audio 0V is conneced o a good noise-free mains earh, eiher hrough he audio cable screens or by linking o a local earh. Muliple earh pahs cause earh (ground) loops which may resul in audible hum and inerference. These may be avoided by making sure ha here is only one pah o earh from each piece of equipmen, disconnecing audio cable screens a one end if necessary. Selecing he ground lif swich on he rear of he console disconnecs he console audio 0V from he chassis (mains) earh. This avoids ground loops in siuaions where he chassis mealwork is in physical conac wih anoher pah o earh, (ofen he case in 19" rack insallaions), or if audio 0V connecs o mains earh elsewhere in he sysem. Ground lif swich locaed on rear of he console power uni. Press o disconnec audio 0V from mains earh.

INTERCONNECTIONS Where possible use balanced connecions for he channel INPUTs and GROUP, L-R and MONO oupus o minimise noise pick-up. Avoid running audio cables near o mains or lighing cables or hyrisor dimmer unis, power supplies ec. These may cause audible hum and buzz. The use of low impedance sources significanly reduces inerference pick-up. Check he cables for correc wiring o avoid problems wih phase reversal and unreliable connecion. The GL2 follows he convenion for XLR pin 2 and jack ip = signal ho (+). Always use balanced cables when connecing o phanom powered microphones. MAKE SURE THAT THE +48V SWITCHES ARE OFF (UP POSITION) WHEN THE CHANNEL INPUT XLRS ARE CONNECTED TO NON-PHANTOM POWERED OR LINE SOURCES. If ground loops cause problems connec he cable screen a one end only as described below. Balanced oupus may be conneced o unbalanced inpus and vice versa by linking he signal cold (-) o 0V ground as follows: Balanced oupu o Balanced inpu - Connec cable screen a desinaion only. Balanced oupu o Unbalanced inpu - Connec screen a source only. Link he -ve oupu o 0v a he oupu connecor. Unbalanced oupu o Balanced inpu - Connec cable screen a desinaion only. Link he -ve inpu o 0V a he inpu connecor. ADJUSTING THE LEVELS For bes performance i is imporan ha he console signal levels are adjused for normal operaing level. If oo high he signal peaks will be clipped resuling in a harsh disored sound, and if oo low he signal-o-noise raio is reduced resuling in excessive background hiss. For bes resuls operae he console wih he oupu meers averaging 0 or jus below and allowing he occasional high level passage o rise ino he red. This resuls in a nominal console oupu level of +4dBu wih ample inernal headroom of +23dB o allow for he peaks. I is advisable o use an aenuaor pad if you are connecing he oupus o equipmen which does no have inpu level conrols and operaes a a much lower level. Simply reducing he fader seings (and hence meer levels) o compensae may resul in excessive background noise and breakhrough due o he reduced signal-o-noise raio. The same applies o he console monior oupu used o check he console signals hrough reference loudspeakers. The monior amplifier should be mached o he console such ha normal conrol room lisening levels are achieved wih he monior LEV conrol se around posiion '5' o '7'. Operaing a a lower posiion, say '2' or '3', degrades he oupu signal-o-noise raio and may resul in audible hum and noise. The console PFL (pre-fade lisen) / AFL (afer-fade lisen) sysem les you lisen o and check he level of signals a differen poins in he signal pah wihou affecing he main oupus. Use he channel PFL swiches o se up he inpu levels. This overrides he phones/monior oupus wih he pre-fader channel signal (in mono) and displays is level on he monior meers. Adjus he channel GAIN conrols for an average '0' reading on he meers. Use he aux, group and L-R AFL swiches o check he pos maser fader mix levels. Adjus he channel faders for opimum mix level. The normal operaing seing of he faders is a he '0' posiion, allowing 10dB of boos o he op of ravel. The red channel and group, L-R PEAK indicaors give insan warning of poenial signal overload. These illuminae 5dB before clipping. Reduce channel gain or fader seings as appropriae. Each Group fader has a meer ladder showing signal presence (dynamic indicaion saring a -20dB), 0dB level, and peak (5dB below clipping). OPTIONS AUX SENDS: Aux 1-4 and aux 5,6 are swiched pre or pos fader using panel swiches o saisfy mos applicaions wihou he need o access inernal circuis. Pre-fade is se pre-eq and pos-mue as sandard. Conac your service agen should you require alernaive seings. An opion is available o balance he aux jack oupus. Noe ha he sandard aux oupus are low impedance high level line signals which are inerference free and do no require balancing unless exremely long cables are conneced in he presence of high level inerference and hum fields. The opions should be fied only by compeen echnical personnel who have reference o he GL2 service manual. CONSOLE EXPANDER: The GL2 Sys-link opion may be insalled such ha wo GL2 consoles operae as one in a maser/slave arrangemen. This is no a user fied opion. Conac your service agen for deails.

INPUT GL2 PRECAUTION! ALWAYS MAKE SURE THAT +48V SWITCHES ARE OFF (UP POSITION) WHEN THE CHANNEL INPUT XLRS ARE CONNECTED TO NON-PHANTOM POWERED OR LINE SOURCES. MATCHING THE INPUT A wide-ranging padless inpu pre-amplifier maches he conneced audio source o he console. Use he PFL sysem o se GAIN for he correc inernal operaing level (0dB on he meers). Cenre posiion provides +10dB line gain. MIC/LINE selecs a balanced mic or line XLR source. Connecing o he addiional 1/4" jack balanced line inpu auomaically overrides he XLR line inpu. For MIC INPUT only connec o he XLR socke. Selec MIC (or LINE o provide a 20dB pad for very high oupu microphones). For LINE INPUT only connec eiher o he XLR or jack connecor and selec LINE. For MIC AND LINE INPUT selecable using he swich connec mic o he XLR and line o he jack socke. Individual +48V phanom power swiches are locaed on he rear panel, recessed o preven accidenal operaion. Use only wih phanom powered microphones conneced wih correcly balanced cables. 4-BAND EQUALISER Shelving HF, LF and wo wideband peak/dip mid sweeps provide 14 db of cu and boos. EQ IN swiches he equaliser in or ou of he channel pah. Cenre deens se he response fla. The normalled INSERT socke provides a pre-eq -2dBu break poin for insering an exernal effecs or signal processing device ino he channel pah. This may also be wired as a pre-fade direc oupu by linking send o reurn in he plug and apping he signal from his poin. Use he PFL sysem o mach he insered device o he operaing level of he channel. 6 AUX SENDS 6 individual sends wih 1-4 and 5,6 swichable pre/pos fader provide effecs and foldback sends for recording or F.O.H., or monior mix sends for ON-STAGE console operaions. Inernal links for he pre-fade sends are se as sandard o pre-eq (pos-eq opion) and pos-mue (pre-mue opion). ROUTING Cenre deened PAN posiions he signal beween L (odd) and R (even) of he seleced groups/l-r mix. This posiions he signal as required in he sereo image, or may be used o roue o single mono oupus only. The 100mm long hrow FADER provides a furher 10dB boos above he normal 0 operaing posiion. MUTE swiches he channel off. CHECKING THE SIGNAL The red PEAK LED warns of poenial overload 5dB before clipping a any of 3 key poins in he channel pah. Pressing PFL roues he pre-fade signal o he console monior/meer sysem o check sound qualiy and gain seing. The PEAK LED will illuminae a HALF brighness when he PFL swich is pressed.

STEREO MATCHING THE INPUT For INPUT A se he IN A/B swich up. For INPUT B se he IN A/B swich down. MONO combines he lef and righ inpus o mono he source, or may be used o inpu a mono source o he sereo channel pah. The GAIN conrol allows a wide range of equipmen o be correcly mached o he console. 4-BAND EQUALISER Shelving HF and LF and wo fixed frequency peak/dip mid conrols provide 14dB of cu and boos. EQ IN swiches he equaliser in or ou of he channel pah. Cenre deens se he response fla. DUAL INPUT The sereo channel feaures a dual inpu which selecs beween wo alernae sereo sources. This is ideal for fas swiching beween sereo sources wihou he need o re-pach he console. I also allows connecion o sandard leads wih eiher jack or phono plugs. The sereo channels may also be used for reurns from sereo effecs processors, providing full EQ, signal checking, rouing and feeds o foldback moniors. To avoid feedback do no send he reurn back o iself hrough is pos-fade aux send. 6 AUX SENDS 6 individual sends wih 1-4 and 5,6 swichable pre/pos fader provide effecs and foldback sends for recording or F.O.H., or monior mix sends for ON-STAGE console operaions. Inernal links for he pre-fade sends are se as sandard o pre-eq (pos-eq opion) and pos-mue (pre-mue opion). The L and R sereo signals are combined o provide he aux feeds in mono. ROUTING The PAN conrol changes is characerisics depending on he MONO swich saus. In sereo, PAN funcions as a balance conrol, usually o adjus for imbalance in he source. In mono i provides rue pan o posiion he signal in he sereo image. The 100mm long hrow FADER provides a furher 10dB boos above he normal 0 operaing posiion. MUTE swiches he channel off. CHECKING THE SIGNAL The red PEAK LED warns of poenial overload 5dB before clipping a he pre-fade L and R channel poins. Pressing PFL roues he pre-fade signal in mono o he console monior/meer sysem o check sound qualiy and gain seing. The PEAK LED will illuminae a HALF brighness when he PFL swich is pressed.

GROUP OPERATING MODE GL2 The recessed GRP/AUX REV swich deermines he way in which he group signal pah is arranged. For convenional operaion FRONT-OF-HOUSE or RECORDING (swich up) he group mix is roued o he main signal pah hrough he inser, FADER and MUTE swich o he balanced XLR oupu, while providing subgrouping, AFL monioring, signal and PEAK meering. The relaed aux mix roues hrough he roary SEND MASTER level conrol o he 1/4" jack aux oupu, wih AFL monioring available, o provide an effecs or foldback send. Wih he swich pressed (using a pen ip or similar) he group and aux mix is reversed so ha he signal pah is opimised for ON-STAGE MONITOR operaion. This feeds he aux mix hrough he main signal pah o provide a full feaure balanced sage monior send. In his mode he group mix is reroued o he relaed aux jack oupu hrough is send maser and is available for addiional monior, effecs or sub sends. I is advisable o sudy he GL2 sysem block diagram o fully undersand his flexible rouing arrangemen. RETURN/SUBGROUP To RETURN processed signals from exernal effecs devices or inpu addiional line signals o he L-R mix, or for TAPE MONITORING during muliracking, se he RET/GRP swich o he up posiion. Use he LEV and cenre deened PAN conrols o adjus he level and sereo image. SUBGROUPING enables several sounds o be combined under conrol of a single fader and hen roued o he main L-R mix. To se up a subgroup roue he required channels o a group, press he GRPswich, and adjus LEV and PAN for he desired level and sereo image in he L-R mix. Using he channel and subgroup PAN conrols i is possible o se up mono or sereo subgroups. CONTROL OF THE OUTPUTS The main oupus (group or aux mode as seleced) are conrolled by he 100mm long hrow FADERS which offer a furher 10dB boos above he normal '0' operaing posiion. MUTE swiches off he oupu. Pressing AFL roues he pos-fader signal o he console monior/meer sysem o check sound qualiy and mix level. The AFL signal is pre-mue o allow he oupu o be mued if required while checking he signal. Each main oupu has a dedicaed pos-fader LED meering sysem. SIG responds dynamically o he audio signal saring o illuminae around -20dB level. 0dB urns on a he console 0dB level (-2dBu inernal). PEAK warns of poenial overload 5dB before clipping.

MASTER MONITORING THE SYSTEM The PHONES/MONITOR secion allows he engineer o lisen o L-R (aux 5-6) eiher PRE or POST he maser faders, or 2-TRACK reurn hrough up o wo pairs of sereo headphones or monior speaker sysems while displaying he seleced source on he L and R monior meers. The peak responding LED bargraph meers are posiioned above each group srip. Pressing any AFL or PFL swich inerrups lef and righ of he monior wih he seleced signal in mono and displays AFL (AFL acive LED on) or PFL (PFL or AFL+PFL LED on) on boh meers. Source selecion follows his prioriy: PFL overrides AFL overrides 2-TRACK overrides L-R PRE overrides L-R POST 2-TRACK RECORD AND REPLAY 2 pairs of phono connecors, SEND and RETURN, allow convenien connecion o a 2-rack recorder such as cassee or DAT. The send may also be used as an addiional unbalanced L-R oupu. These connecions are se as sandard for low level operaion (-10dBV). For high level recording he balanced L-R XLR oupus may be used. MONO OUTPUT OPERATING MODE The recessed MONITOR MODE swich deermines he funcion of he balanced mono oupu. For F.O.H. applicaions (swich up) he main L and R oupus are summed o drive a cenre MONO FILL speaker sysem. Alernaively his oupu may be used for mono recording or o provide a mono broadcas feed. For ON-STAGE operaion (swich pressed) his oupu becomes AFL inerruped by PFL o drive an engineers WEDGE MONITOR sysem. The wedge mix is creaed by pressing he required aux (group) AFL swich combinaion o lisen o he monior send mix. Pressing any PFL swich allows he engineer o check he channel signals, for example while seing he gains or EQ. On-sage monior sysems usually include a graphic equaliser on each monior feed adjused o une ou he resonances which cause acousic feedback. These equalisers should be pached ino he console group insers so ha heir effec may be moniored when AFL is pressed. THE MAIN L-R OUTPUTS The L and R oupu secion is idenical o he group secion wih aux reverse swiching which configures he main oupus for aux 5, 6 when required. Noe ha he subgroups always roue o he L-R mix and are herefore presen a he aux 5, 6 oupus when reverse is seleced. I is possible o se up an addiional sereo or wo mono monior sends from a combinaion of moniors (aux) 1 o 4 when SUBGROUP is seleced. Alernaively he four reurn inpus provide a fully independen sereo sub mixer when RETURN is seleced.

MONO FRONT-OF-HOUSE GL2 conference... club... disco... live shows... heare... church... ouring... LEFT RIGHT 3 4 1 2 5 FOLDBACK 6 pre-fade aux sends 1 2 EFFECTS 3 groups 4 reurns sends inser COMPRESSOR/LIMITERS These are ofen used o preven excessive peaks overloading he amplificaion sysem, for example in club insallaions subjec o sound level conrol. This example shows he 4 groups, L, R, and Mono oupus feeding a 7 sack FOH amplificaion sysem. The groups provide independen conrol of he addiional lef and righ loudspeaker sacks, or may be used for separae effecs or zone feeds, or for subgrouping o he L-R mix. Selec aux 1 o 4 pos-fade o access 4 effecs processing devices. Use Reurn inpus 1 o 4 o add he effecs o he L-Mono-R oupus. Alernaively use he sereo or mono channels o mix he effecs ino he groups and foldback as well. Selec aux 5 and 6 pre-fade for 2 foldback monior sends. The channel and oupu insers may be used for floaing effecs and signal processing devices such as compressors, limiers and graphic equalisers. POST PRE These swiches are recessed o avoid accidenal operaion. Se using a pen ip or poined objec. up Se he MONITOR MODE swich o he up posiion for mono ou (L+R sum). up Se he REV swiches o he up posiion for convenional group/lr operaion.

ON-STAGE MONITOR On-sage mixing sysem for local conrol of performers monior loudspeakers (wedges) Wih dedicaed oupu for he sage engineers wedge loudspeaker. 1 STAGE MONITORS 6 2 5 3 4 mic splier AMPLIFIERS inser EFFECT ENGINEERS WEDGE MONITOR Se up he WEDGE MIX by selecing one or a combinaion of he group/l/r AFL (monior 1 o 6) swiches o lisen o he desired sage monior oupus. These are pos inser (pos graphic EQ) and pos oupu fader for accurae monioring. Pressing any PFL swich auomaically overrides he seleced AFL source o allow channel seup and signal checking. o FOH console insers EQUALISERS Graphic equalisers plugged ino he console insers are an invaluable aid o reducing on-sage acousic feedback and enhancing he clariy of he moniors. Using he insers allows he sage engineer o check he operaion of he equalisers in his wedge monior. I is bes o use he same ype of loudspeaker for he engineers monior as he sage moniors. This example shows he 6 aux sends roued hrough he main oupus o provide 6 independen sage monior mixes wih meering, mues, AFL, insers and balanced XLR connecors. The REV swiches reroue he groups and L-R mix o he aux jack oupus for addiional monior or effecs sends, or as an independen submix faciliy. For example he aux 5 and 6 jack oupus may provide a separae sereo mix oupu fed from he channel L-R swiches and he addiional 4 reurn line inpus. To add effecs such as delay or ADT o he sage moniors he signal/s may be roued o a group (available a he aux jack oupu), using he maser LEV o conrol he send level, and reurning he effec o an unused channel using he aux send conrols o se he required amoun of effec o each monior. POST POST down down These swiches are recessed o avoid accidenal operaion. Se using a pen ip or poined objec. Se he MONITOR MODE swich o he down posiion (below panel) for he wedge monior oupu (AFL inerruped by PFL). Se he REV swiches o he down posiion o roue he aux mix hrough he main oupus o provide he sage monior sends.

MONO MULTIMODE GL2 L-M-R Fron-of-House sysem wih 4 dedicaed sage monior sends. LEFT RIGHT 3 4 1 STAGE MONITOR 2 STAGE MONITOR EFFECTS groups (aux 1-4) aux 5, 6 inser reurn 1, 2 COMPRESSOR/LIMITERS Signal processors such as hese are useful o preven excessive peaks overloading he amplificaion sysem. insers EQUALISERS To une ou sage resonances o preven acousic feedback. These may alernaively be posiioned on sage in series wih he amplifier feeds for performer conrol. This example shows he GL2 configured o conrol a Lef, Cenre, Righ Fron-of House sysem wih 4 full feaure sage monior sends. Aux 1-4 are se pre-fade for he monior sends so ha he send level is no affeced by he F.O.H. mix. Aux 5 and 6 are se pos-fade o access wo effecs devices whose oupus are added o he L-R mix via reurn inpus 1 and 2. Alernaively hese may be reurned via he channels, useful for sereo effecs devices. pre pos up up These swiches are recessed o avoid accidenal operaion. Se using a pen ip or poined objec. Se he MONITOR MODE swich o he up posiion for mono ou (L+R sum) Se he L and R REV swiches o he up posiion for L-R F.O.H. feeds The channel and oupu insers may be used for floaing effecs and signal processing devices such as compressors, limiers and graphic equalisers. down Se he group 1-4 REV swiches o he down posiion o roue he aux mix hrough he main oupus o provide 4 sage monior sends.

RECORDING sereo amplifier sereo and mulirack... sudio... live... locaion... audio visual... producion... LEFT RIGHT MUSICIANS CUE MONITOR LOUDSPEAKER SYSTEM sereo amplifier oupus inpus Y-spliers (or repach leads as required) 4-TRACK MULTITRACK groups reurns line ins 2-TRACK RECORDER send reurn aux 5 COMPRESSOR/LIMITERS These are ofen used in locaion recording o preven unexpeced signal peaks overloading he recorder. aux 6 2 1 STEREO EFFECTS PATCHED EFFECT Here, a ypical small STUDIO RECORDING seup is shown wih 4-rack mulirack and 2-rack masering recorders (ideal for hard disk and DAT recording sysems). The dedicaed 2-rack sends or he balanced L,R oupus may be used o feed he 2-rack. Selec aux 1 o 4 pos-fade for he effecs processors. Two sereo devices are illusraed here wih heir oupus reurned o he sereo channels. Addiional floaing effecs devices may be pached ino he channel or oupu insers as shown. Selec aux 5 and 6 pre-fade o provide a sereo cue o he musicians headphones. Alernaively hese may be se pos-fade for addiional effecs and he L,R oupus used for cue. The addiional rear panel phones/monior oupu feeds he sudio reference loudspeaker sysem o monior he console signals and recorded racks wihou inerruping he recording iself. For LIVE RECORDING he channel insers may be apped (link send o reurn) o provide addiional prefade direc feeds o a mulirack. POST PRE MULTITRACKING: To monior he rack reurns selec RET and adjus LEV and PAN for he required monior mix. Alernaively, use he channel line inpus if a dedicaed musicians cue feed (aux 5,6) is required. To monior he group sends o he mulirack selec GRP. MIXDOWN: Use GRP for subgrouping or RET for effecs reurns. Mix he rack reurns hrough he channel line inpus. up Se he REV swiches o he up posiion for group (rack) and L-R oupus.