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Order codes: AMP24 - EPX 300AMP25 - EPX 500AMP26 - EPX 800
AMP27 - EPX 1200AMP28 - EPX 2200
EPX Series Power Amplifiers
User Manual
POWER
PROTECT
I
O
CLIPCLIP
POWERCH A CH B
POWER
PROTECT
I
O
CLIPCLIP
POWERCH A CH B
POWER
PROTECT
I
O
CLIPCLIP
POWERCH A CH B
POWER
CLIPCLIP
POWERI
O
PROTECT
BR PRST
CH A CH B
POWER
CLIPCLIP
POWERI
O
PROTECT
BR PRST
CH A CH B
www.prolight.co.uk EPX Series Power Amplifiers User Manual 2
Safety advice
WARNINGFOR YOUR OWN SAFETY, PLEASE READ THIS USER MANUAL CAREFULLY BEFORE YOUR INITIAL START-UP!• Immediatelyuponreceivingthisproduct,carefullyunpackthecartonandcheckthecontents
toensurethatallthepartsarepresent.
• Beforeinitialstart-up,pleasemakesurethatthereisnodamagecausedduringtransportation.
• Shouldtherebeanydamage,consultyourdealeranddonotusetheequipment.
• Retainthecartonandallpackagingmaterials.
• Intheeventthattheequipmentmustbereturnedtothesupplier,itisimportantthattheequipmentisreturnedintheoriginalcartonandpackaging.
• Tomaintaintheequipmentingoodworkingconditionandtoensuresafeoperation,itisnecessaryfortheusertofollowthesafetyinstructionsandwarningnoteswritteninthismanual.
• Pleasenotethatdamagescausedbyusermodificationstothisequipmentarenotsubjecttowarranty.
IMPORTANT:The manufacturer will not accept liability for any resulting damages caused by the non-observance of this manual or any unauthorised modification to the equipment.
OPERATING DETERMINATIONSIfthisequipmentisoperatedinanyotherway,thanthosedescribedinthismanual,theproductmaysufferdamageandthewarrantybecomesvoid.Incorrectoperationmayleadtodangere.g:short-circuit,burnsandelectricshocksetc.
Incaseofmalfunctionthisunitshouldbereturnedforserviceorinspection.
Donotendangeryourownsafetyandthesafetyofothers!
Incorrectinstallationorusecancauseseriousdamagetopeopleand/orproperty.
• Neverletthepowercablecomeintocontactwithothercables.Handlethepowercableandallmainsvoltageconnectionswithcaution!
• Neverremovewarningorinformativelabelsfromtheequipment.
• Donotopenormodifytheequipment.
• Donotconnectthisequipmenttoadimmer-pack.
• Donotswitchtheequipmentonandoffinshortintervals,asthiswillreducethesystem’slife.
• Onlyusetheequipmentindoors.
• Donotexposetoflammablesources,liquidsorgases.
• Alwaysdisconnectthepowerfromthemainswhenequipmentisnotinuseorbeforecleaning!Onlyhandlethepowercablebytheplug.Neverpullouttheplugbypullingthepowercable.
• Makesurethattheavailablevoltageisbetween220V/240V.
• Makesurethatthepowercableisnevercrimpedordamaged.Checktheequipmentandthepowercableperiodically.
• Iftheequipmentisdroppedordamaged,disconnectthemainspowersupplyimmediately.Haveaqualifiedengineerinspecttheequipmentbeforeoperatingagain.
• Iftheequipmenthasbeenexposedtodrastictemperaturefluctuation(e.g.aftertransportation),donotswitchitonimmediately.Thearisingcondensationmightdamagetheequipment.Leavetheequipmentswitchedoffuntilithasreachedroomtemperature.
• Iftheproductfailstofunctioncorrectly,discontinueuseimmediately.Packsecurely(preferablyintheoriginalpackingmaterial),andreturntoyourdealerforservice.
• Onlyusefusesofsametypeandrating.
• Repairs,servicingandpowerconnectionmustonlybecarriedoutbyaqualifiedtechnician.THISUNITCONTAINSNOUSERSERVICEABLEPARTS.
• WARRANTY:Oneyearfromdateofpurchase.
CAUTION!KEEP THIS EQUIPMENT AWAY FROM MOISTURE, RAIN AND LIQUIDS, AND OUT OF DAMP/HUMID ENVIRONMENTS
CAUTION! TAKE CARE USING THIS EQUIPMENT!HIGH VOLTAGE-RISK OF ELECTRIC SHOCK!!
www.prolight.co.uk EPX Series Power Amplifiers User Manual 3
Product overview
Aprofessionalrangeofpoweramplifiersofferingsuperiorreliabilityandperformance,withafullrangeofpoweroptionsavailabletosuitavarietyofapplications.
•Shortcircuit,overloadandthermalprotection
•Fancooled
•Groundlift
EPX Series Power Amplifiers
Specifications EPX 300 EPX 500 EPX 800 EPX 1200 EPX 2200
Outputpower1kHz,THD+N≤0.5%
Stereo8Ω 2x90W 2x180W 2x270W 2x400W 2x850W
Stereo4Ω 2x150W 2x250W 2x400W 2x600W 2x1100W
Bridge8Ω - - - 1200W 2200W
Frequencyresponse 20Hzto20kHz±1.0dB
Inputsensitivity 0.775V/1.0V/1.44V
S/Nratio(a-weighted,RMS) >95dB>100dB
>70dBCrosstalkatratedpoweroutput(8Ωat1kHz)
>55dB >65dB
Dampingfactor(f=1kHz@8Ω) >60 >150dB >200
ProtectioncircuitsThermal,shortcircuit,overload,DCfaultprotection
&ACpowersupplyfuse
Softstart,limit,thermal,shortcircuit,overload,DCfaultprotection
&ACpowersupplyfuse
LEDindicators Power,protect&clip Power,protect,clip,stereo,parallel&bridge
ConnectorsInputs:2xphonosockets,2x1/4”jacksockets
Outputs:2xlockingspeakerconnectors,2xbindingposts
Inputs:2xXLRsockets,2x1/4”jacksocketsOutputs:2xlockingspeakerconnectors,2xbindingposts,1xlockingspeaker
bridgeconnector
Coolingsystem Low-noisecoolingfans,variablespeedfan
Powersupply AC240V/50Hz
Dimensions(HxWxD) 87x481x297mm 87x481x297mm 87x481x297mm 87x481x450mm 87x481x450mm
Weight 9.5kg 10kg 10.5kg 18kg 21kg
Ordercode AMP24 AMP25 AMP26 AMP27 AMP28
Inthebox:1 x power amplifier, 1 x power cable & 1 x user manual
POWER
PROTECT
I
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CLIPCLIP
POWERCH A CH B
POWER
PROTECT
I
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CLIPCLIP
POWERCH A CH B
POWER
PROTECT
I
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CLIPCLIP
POWERCH A CH B
POWER
CLIPCLIP
POWERI
O
PROTECT
BR PRST
CH A CH B
POWER
CLIPCLIP
POWERI
O
PROTECT
BR PRST
CH A CH B
www.prolight.co.uk EPX Series Power Amplifiers User Manual 4
EPX 300, EPX 500 & EPX 800 dimensions
EPX 1200 & EPX 2200 dimensions
Product overview
481mm
87mm
264mm
297
mm
426mm
481mm
87mm
421
mm
450mm
426mm
www.prolight.co.uk EPX Series Power Amplifiers User Manual 5
EPX 300, EPX 500 & EPX 800 front panel
EPX 300, EPX 500 & EPX 800 rear panel
Technical specifications
01-ClipLEDs-TheseLEDsflashredtoindicatewhentheoutputoftheamplifierhasreachedthemaximum,andisrightontheedgeofclipping.Clippingisbadforspeakersandshouldbeavoided.ItisokayiftheLEDblinksoccasionally.Itmeansthatthetransientpeaksofthemusicarejusthittingthefulloutputoftheamplifier.
02-Gaincontrol-ThesetwoknobscontrolthelevelsofChannels1and2.Usually,thesecontrolsaresetallthewayup.Youmightturnthemdownslightlyifyouhavehigh-efficiencyspeakers.Also,youcouldusethemtocontrolthelevelofline-levelsourcessuchasaCDplayerconnecteddirectlytotheamplifierwithoutapre-amplifierormixer.Afteryouhavesetthelevels
forthemixer(orothersignalsource),adjustthelevelcontrolsontheamplifierasthefinaladjustmenttosettheoverallvolumeforthesystem.Instereoandmonomode,usebothlevelcontrolstocontrolthelevelsgoingtoeachspeaker.
03-PowerLED-ThisLEDilluminateswhentheamplifierisswitchedon
04-ProtectLED-IfthisLEDisilluminatedduringoperation,oneoftheprotectioncircuitsisactive.Pleasetaketheamplifieroutofoperationandhaveittested
05-Powerswitch-Pressthisswitchtostarttheoperation
POWER
PROTECT
I
O
CLIPCLIP
POWERCH A CH B
01 0205 02
0304
01
INPUTS
GROUNDLIFT
LIFT GNDB A
RIGHT LEFT
POWER AMPLIFIER
240V~50Hz
Serial no.
CAUTION!Remove the mains power before opening the unit. No user serviceable parts inside, refer to quali�ed service personnel. Protect the unit against moisture and heat. Operating temperature range 0-40°C. This product is not intended for use other than stated.
MAINS
T3.15 A
240V~50Hz
!
OUTPUTS(4Ω min.)
01-¼”jackinputs-Theseinputsallowyoutoconnect¼”unbalancedjackplugs
02-Phonoinputs-Theseinputsallowyoutoconnectunbalancedphonoplugs
03-Therearethreewaysofconnectingyourspeakers:Lockingspeakerconnectors,¼”jackorbindingposts.Theconnectorsarewiredinparallel.(e.g.Channel1bindingpost,jackandlockingspeakerconnectorsareinparallelandthesameforchannel2).
04-Powercablesocket-Thisiswhereyouconnectthedetachablepowercable.Connecttheotherendtoa240VACoutlet.
05-Groundliftswitch-Thisswitchallowsthesignalgroundorchassisgroundtobeseparatedincaseofagroundconflict.Forthehighestsafetyoftheequipment,itisrecommendedtokeepthe“groundliftswitch”intheGNDposition.IncaseofagroundconflictpleasesetthegroundliftswitchtoGNDLIFT.
0201 01 040305
www.prolight.co.uk EPX Series Power Amplifiers User Manual 6
Technical specifications
EPX 1200 & EPX 2200 front panel
01-ClipLEDs-TheseLEDsflashredtoindicatewhentheoutputoftheamplifierhasreachedthemaximum,andisrightontheedgeofclipping.Clippingisbadforspeakersandshouldbeavoided.ItisokayiftheLEDblinksoccasionally.Itmeansthatthetransientpeaksofthemusicarejusthittingthefulloutputoftheamplifier.
02-Gaincontrol-ThesetwoknobscontrolthelevelsofChannels1and2.Usually,thesecontrolsaresetallthewayup.Youmightturnthemdownslightlyifyouhavehigh-efficiencyspeakers.Also,youcouldusethemtocontrolthelevelofline-levelsourcessuchasaCDplayerconnecteddirectlytotheamplifierwithoutapre-amplifierormixer.Afteryouhavesetthelevelsforthemixer(orothersignalsource),adjusttheLevelcontrolsontheamplifierasthefinaladjustmenttosettheoverallvolumeforthesystem.Instereoandmonomode,usebothlevelcontrolstocontrolthelevelsgoingtoeachspeaker.Inbridgedmode,turnthechannel2levelcontroldown,andjustusethechannel1control.
03-PowerLED-ThisLEDilluminateswhentheamplifierisswitchedon
04-ProtectLED-IfthisLEDisilluminatedduringoperation,oneoftheprotectioncircuitsisactive.Pleasetaketheamplifieroutofoperationandhaveittested
05-StereoLED-Thisilluminatesinstereomode
06-BridgedLED-Thisilluminatesinbridgedmode
07-ParallelLED-ThisLEDilluminatesinparallelmode
08-Powerswitch-Pressthisswitchtostarttheoperation
POWER
CLIPCLIP
POWERI
O
PROTECT
BR PRST
CH A CH B
01 0208 02
0403
01
0605 07
www.prolight.co.uk EPX Series Power Amplifiers User Manual 7
EPX 1200 & EPX 2200 rear panel
OUTPUTS CH-B OUTPUTS CH-A OUTPUTBRIDGE
240V~50Hz
MAINS CIRCUIT BREAKER
GROUNDLIFT
LIFT GND
LIMITER
ON OFF
PR STBR
LOWHIGH BYPASS LOWHIGH BYPASS
!CAUTION!Remove the mains power before opening the unit. No user serviceable parts inside, refer to quali�ed service personnel. Protect the unit against moisture and heat. Operating temperature range 0-40°C. This product is not intended for use other than stated.
Serial no.
POWER AMPLIFIER240V~50Hz
INPUTCH-B
LINKCH-B
LINKCH-A
INPUTCH-A
PINOUTCH-A
POS
1-
2-2+
1+
NEG
BRIDGE
POS
1-
2-2+
1+
NEG
CH-B
POS
1-
2-2+
1+
NEG
01-XLRinputs-TheseinputsallowyoutoconnectbalancedXLRplugs.Thesearewiredwithpin2hot,pin3coldandpin1ground
02-¼”jackinputs-Theseinputsallowyoutoconnect¼”unbalancedjackplugs
03-Therearetwowaysofconnectingyourspeakers:Lockingspeakerconnectorsorbindingposts.Theconnectorsarewiredinparallel.(e.g.Channel1bindingpostandlockingspeakerconnectorsareinparallelandthesameforchannel2).Whentheamplifierisusedinbridgedmonomodeuseeithertheoutputbridgedlockingspeakerconnectorsorthetworedbindingposts.
04-Lockingpowersocket-Thisiswhereyouconnectthedetachablelockingpowercable.Connecttheotherendtoa240VACoutlet.
05-Ampmode-Thisswitchdeterminestheinputsignalroutingwithintheamplifier.Formostapplicationsstereowillbeused.Stereo:Thisisthenormalmodeforamplifyingstereosignals.Itacceptsleftandrightinputsandroutesthemtotheleftandrightoutputs.Parallel:Thismodeisusedwhenyouwanttosendmonosignalstobothoutputs.Itacceptsasingleinputintochannel1androutesittoboththechannel1andchannel2outputs.Eachchannelslevelcontroladjuststhegainforeachchannel.Bridge:Thismodeacceptsasingleinputintochannel1andusesbothamplifieroutputstodoublethepowertoonespeakeroutput.Usechannel1levelcontroltoadjustthegain.Turnchannel2levelcontroltominimum.
06-Whenengagedthelimiterswitchprotectsyourspeakersfromtheeffectsofclipping.Itisdesignedtobevirtuallytransparentandyoushouldhearverylittleaudibledifference.Itisrecommendedthatyoualwayshavethisswitchactiveunlessyouareusingexternalcompressor/limiters.
07-Groundliftswitch-Thisswitchallowsthesignalgroundorchassisgroundtobeseparatedincaseofagroundconflict.Forthehighestsafetyoftheequipment,itisrecommendedtokeepthe“groundliftswitch”intheGNDposition.IncaseofagroundconflictpleasesetthegroundliftswitchtoGNDLIFT.
08-ThesebalancedXLRoutputscanbeusedtoloopthroughthesignaltoadditionalpoweramplifiers.
09-Crossover:FornormaloperationsetthemodeswitchtoBypass.Low/HighPassMode:Whenusingthe“Low/HighPassMode”,theamplifiercanbeconfiguredforHighPassorLowPassoperation.
10-Circuitbreaker-Iftheamplifierisoverdrivenoraseriousproblemoccurstheresettablecircuitbreakermaybeactivated.Pushtoresetthecircuitbreakerwhennecessarytorestorepowertotheamplifier.Ifthebreakerwillnotreset,contactyournearestauthorisedrepaircentreforassistance.
04 10 03
02 0909 010808 0506 070102
Technical specifications
www.prolight.co.uk EPX Series Power Amplifiers User Manual 8
Operating instructions
Rack installation
TheEPSeriesisbuiltfor19”racks.Therackyouuseshouldbea‘doubledoorrack’whereyoucanopenthefrontandrearpanel.Whenmountingtheamplifierintotherack,pleasemakesurethatthereisenoughspacearoundtheamplifier.
Becarefulwhenmountingtheamplifierintotherack.Puttheheaviestproductsintothelowerpartoftherack.Beawarethatfasteningtheamplifierwithfourscrewsonthefrontpanelisnotenough.
Iftheracksarebeingtransportedorusedformobileuse,additionallyfastentheproductsby
connectingtherearbracketswiththesideorgroundbarsoftherack.Inthisway,theamplifier
cannotbepushedbackwards.Thefrontpanelisnotdesignedtoabsorbaccelerationforces
occuringduringtransportation.
Inputs
Shortcablesrunsimprovethesoundqualityremarkably.Inputcablesshouldbeshortanddirect,
sincehighfrequencieswillmostlybeabsorbedifthecablesareunnecessarilylong.Besidesthatalongercablemayleadtohummingandnoiseproblems.Ifthecablerunsareunavoidable,youshouldusebalancedcables.
Outputs
Thehighdampingfactorofyouramplifiersuppliesaclearsoundreproduction.
Unnecessarilylongandthincableswillinfluencethedampingfactorandthusthelowfrequenciesinanegativeway.Inordertosafeguardgoodsoundquality,thedampingfactorshouldliearound50.Thelongeracablehastobethethickeritshouldbe.
ConnectyourspeakersystemsviathelockingspeakerconnectorsortheBannana/Screwcombination(red+,black-)
Connection to the mains
Connecttheamplifieronlyafterhavingmadesurethatthecorrectvoltage(240V)issuppliedandthatthegroundcableisearthed.ThisproductfallsunderClass1.Donotdetachthegroundcable.
www.prolight.co.uk EPX Series Power Amplifiers User Manual 9
Operating instructions
Operation
Afterhavingconnectedyouramplifiertothemains,turnbothgaincontrolscounterclockwisetothe“min”position.Thelastproducttobeswitchedonisamplifier.The“ON”and“PROTECT”LEDlightsupnow.Ifitdoesnot,checkiftheamplifierisconnectedtothemainscorrectly.
Aftertheturnondelaythespeakersareactivated(PROTECT-LEDisoff).
Afterhavingsetthevolumecontrolsofthepre-amplifiertothe“OFF”position,turnthegaincontrolsofyouramplifiertomid-position.NowadjustthevolumewiththegaincontrolsCHAandCHB.
Allimportantoperatingmodesoftheamplifierarearrangedonthefrontpanel.
Ifyouwanttoswitchoffthesystem,switch off the amplifier firstinordertoavoidacousticshocksonthespeakers.
Problem Chart
-20dBto30dB -Outputlevel
Clip -Shortcircuitorimpedancetooloworsignaldistorted
Protect -Activeduringstabilisationperiodafterswitchingonorwhenone oftheprotectivecircuitsisactivated
Problem Cause Solution
Nopower Thepowercableisnotconnected Checkthepowercableandanyextensioncables
Nosound
Thepowercableoftherespectiveproductisnotconnectedcorrectlyornotatall.
Checkthepowercableandiftheplugsareproperlyconnectedwiththesockets
Theconnectionsocketortheplugisdirty Cleanthesocketand/ortheplug
Noise Theinputsignalistoostrong Reducetheinputsignalviathegaincontrol
Fandoesnotwork,LEDsdonotlightup
Thepowercableisnotconnected Connectthepowercable
ProtectLEDlightsuppermanently
DCvoltageoninputSwitchamplifieroffandhavetheproductcheckedbyaservicetechnician
Amplifieroverheatsduetoobstruction Cleanthefangrill
Impedanceofspeakerstoolow Ensureminimum4Ωload
Shortcircuitinspeakerconnectionorinspeakers
Checkspeakersandconnections
www.prolight.co.uk EPX Series Power Amplifiers User Manual 10
Operating instructions
Cleaning and Maintenance
Werecommendafrequentcleaningoftheproduct.Pleaseuseasoftlintfreeandmoistenedcloth.Neverusealcoholorsolvents.
Therearenoserviceablepartsinsidetheproductexceptforthefuse.Maintenanceandservice
operationsareonlytobecarriedoutbyauthoriseddealers.
Replacing the fuse
Onlyreplacethefusewithafuseofthesametypeandrating.
Beforereplacingthefuse,unplugthemainscable.
Procedure:
Step 1:Openfuseholderontherearpanelwithascrewdriver.
Step 2:Removetheoldfusefromthefuseholder.
Step 3:Installthenewfuseinthefuseholder.
Step 4:Replacethefuseholderinthehousing.
Shouldyouneedanyspareparts,pleaseusegenuineparts.
Shouldyouhaveanyfurtherquestions,pleasecontactyourdealer.
CAUTION! - DANGER TO LIFEDISCONNECT FROM THE MAINS BEFORESTARTING MAINTENANCE OPERATION
www.prolight.co.uk EPX Series Power Amplifiers User Manual 11
WEEE notice
Correct Disposal of this Product (Waste Electrical & Electronic Equipment)
(Applicable in the European Union and other European countries with separate collection systems)
Thismarkingshownontheproductoritsliterature,indicatesthatitshouldnotbedisposedofwithotherhouseholdwastesattheendofitsworkinglife.Topreventpossibleharmtotheenvironmentorhumanhealthfromuncontrolledwastedisposal,pleaseseparatethisfromothertypesofwastesandrecycleitresponsiblytopromotethesustainablereuseofmaterialresources.
Householdusersshouldcontacteithertheretailerwheretheypurchasedthisproduct,ortheirlocalgovernmentoffice,fordetailsofwhereandhowtheycantakethisitemforenvironmentallysaferecycling.
Businessusersshouldcontacttheirsupplierandcheckthetermsandconditionsofthepurchasecontract.Thisproductshouldnotbemixedwithothercommercialwastesfordisposal.
www.prolight.co.uk EPX Series Power Amplifiers User Manual 12