APART CHAMP-3D Manuale utente
MANUAL
CHAMP-3D
Audiophile Digital Power Amplier
INFO@APART-AUDIO.COM
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•Caution:hotandsharpsurfaces!Thisprofessionaldeviceneedstobeinstalledbyqualified
personnelonly.
•Pleasecheckthepackingforanykindofdamageuponreceptionofthegoods.Ifthepackingis
damaged,pleasecontactyourdealerbeforeopeningit.
•!!!!Danger!!!!Exposuretohighsoundpressurelevelsmaycausepermanenthearingloss.
Hearinglossinducedbyexposuretohighsoundpressurelevelswillvaryfromindividualto
individual,butnearlyeveryonewilllosesomehearingwhenexposedforasufficientamountof
time.Thereforeitisrecommendedthatallpersonsexposedtoequipmentcapableofproducing
highsoundpressurelevels,suchasthisamplifier,wearsufficientearprotectionwhileinstalling
oroperatingthisunit.
•Readalldocumentationbeforeoperatingyourequipment.
•Keepalldocumentationforfuturereference.
•Keepthecartonandpackingmaterial,eveniftheequipmenthasarrivedingoodcondition.
•Shouldyoueverneedtosendtheunitback,useonlytheoriginalfactorypacking.
•Donotspillwaterorotherliquidsonorintotheunit.
•Makesurepoweroutletsconformtothepowerrequirementslistedonthebackoftheunit.
•Donotusetheunitiftheelectricalpowercordisdamaged.
•AlwaysoperatetheunitwiththeACgroundwireconnectedtotheelectricalsystemground.
•Turnthelevelcontrolsontheamplifiersallthewaydownduringpower-uptopreventspeaker
damageiftherearehighsignallevelsattheinputs.
•Donotconnecttheinputs/outputsofamplifiersorconsolestoanyothervoltagesource,such
asbatteries,mainssourcesorpowersupplies,regardlessofwhethertheamplifierorconsoleis
turnedONorOFF.
•Powerdownanddisconnectunitsfrommainsvoltagebeforemakingconnections.
•Donotusetheunitnearstoves,heatregisters,radiators,orotherheatproducingdevices.
•Donotoperateequipmentonasurfaceorinanenvironmentwhichmaydistortthenormalflow
ofairaroundtheunit.Iftheunitisusedinanextremelydustyorsmokyenvironment,theunit
shouldregularlybe“blownfree”ofdust.
•Donotremovethecover.Removingthecoverwillexposeyoutopotentiallydangerousvolt-
ages.
•Donotdrivetheinputswithasignallevelhigherthanthatwhichisrequiredtodriveequipment
tofulloutput.
•Donotruntheoutputofanyamplifierbackintoanotherinput.
•Incaseofmalfunction,thisdeviceshouldbeservicedbyqualifiedservicepersonnelonly.
Safetyfirst!
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Features
•Modulardesign,highpower2.1amplifierwith3Hypex™audiophileClass-Ddigitalamplifier
modules.
•Highendoperationalamplifiersintheanalogsignalpath.
•Highthermalefficiency,typically92%.
•Exceptionallyhighdampingfactorfortightbassresponse.AllthebenefitsofaClass-Damplifier
withthehighlyappreciatedclassicanalogamplifiersound.
•Designwithoutfans,oversizedconvectionalcooling,traditionalpowersupplyunit.
•Toroidalpowertransformerandseparatepowersuppliesfor2channelandmonoblock
amplifiers.
•Softstartpowersupplyunit.
•Standbyfunctionwithseparatestandbypowertransformer,accessibleviaRS232.
•Lowstandbypowerconsumption.
•IntegratedAnalogDevices®digitalsignalprocessor(DSP),featuring24bitanalogtodigital
converters(ADC),4bandfullyparametricequalizer,crossoverwithfreelyselectablefrequencies
andLinkwitz-RileyorButterworthfiltercharacteristics,delay,compressorandcliplimiter.
•Balancedinternalanalogsignaldistribution.
•µCcontrolledoperation.
•Intelligentautoloudnesssystem.
•BalancedXLRfemaleandmaleinputconnectorsandeuroblockinputs,withpass-through.
•4-poleSpeakon®outputconnectorsonallchannels.
•Extendedspeakerandamplifierprotectioncircuits:DCprotection,over-currentprotection,over-
temperatureprotection.
•Real-timemainsvoltagemonitoringsystem:disablestheamplifiersandmainpowersupplyin
casethemainsvoltageisoutofrange.
•Real-timepowersupplymonitoringsystem:disablestheamplifierswhentheinternalDCsupply
isoutofrange.
•Lockablefrontcontrols,passwordprotectedparameteraccess,remoteoperationviaRS232and
externalvolumecontrolusingasingleexternalpotentiometer.
•3locklevels:locked,unlockedandvolumeonly.
•Individualchannelmute/selectbuttonsandversatileLEDVUmeters,dotmatrixLCDdisplay
androtaryencoder.
•Userdefinabledisplaytextandfont,adjustableviaRS232.
•User-friendlymenustructurewithdisplayguidancetoaccessalladjustableparameters.
•Speakerwizardmenuwithpresetx-overandlimiterparameters,optimizedforusewithourmost
popularspeakerconfigurations.Versatilemodularamplifier,applicableforbothbackground
musicsystemsaswellasmediumpowerapplications.
•Userdefinablemaximumoutputlevel,idealforuseinsmallpubsorotherplaceswhere
maximumsoundlevelsarerestricted.Noneedforexternalsoundlevelcontrollers.All
parameterscanbelockedandpassword-protected.
•Groundliftswitch.
•ThisunithasNOTbeendesignedforuseinmobileapplications,suchas:mobilediscobars,
mobilePAsystems,Livebands,audiorentalsystems…
•FirmwareupdatepossibleviaRS232port.
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Connections
Rearpanellayout
1)Externalvolumecontrolon2poleeuroblock:hereyoucanconnectastandard10kΩlinear
potentiometer,wiredasanadjustableresistor,usingashieldedcable.Connecttheshieldto
the–connector.Whenenabledinthesettingsmenu,thisexternalpotentiometerallowsyouto
increaseordecreasethemastervolumein2dBsteps.Enablingtheexternalvolumecontrol
automaticallydisablesthefrontpanelmastervolumecontrol.Serialportvolumecontrolwill
alsobedisabled.Whennoexternalpotentiometerisconnectedwhiletheexternalvolume
controlfeatureisenabled,ortheconnectingcableisfaulty,orthevalueofthepotentiometeris
outofrange,the3SGL/ERRORLED’sonthefrontpanelwilllightupredandblink.Thedisplay
willshow“INVALIDEXT.VOL”andtheaudiosignalwillremainmuteduntiltheconnectionhas
beenrepairedortheexternalvolumecontrolhasbeendisabledinthesettingsmenu.
2)RS232portonDB9connector.Standardserialportconnectorforprogramming,external
controlandfirmwareupdatesusingourfirmwareupdateprogramavailableonline.Portsettings
arefixedat19200baudrate,8databits,noparity,nohandshake.LF(linefeed),BS(backspace)
andECHOarenotenabledbutcanbeenabledusinganRS232commandstring.More
informationintheRS232commandschapter.
WhenthetextreturnedviaRS232isgarbledornocommunicationispossible,adjustyour
communicationparameterstomatchthoseoftheunit.IfyouarenotfamiliarwithRS232
communication,serialcablesandcommunicationparameters,askforassistancefroma
qualifiedengineer!
!!!WARNING!!!
ConnectingacomputeroranyothersimilarcontroldeviceviaRS232,maycauseasevereground
loop!Groundloopsmaycauseerraticbehaviorandeventuallydamageyoursystemcomponents.
3)APNETconnector.Forfutureuse.DONOTconnectanykindofcomputernetworkcablehere.
Itwillresultinmalfunctionordamagetoyournetwork!
4)RightchannelXLRmaleinputconnector.
5)RightchannelXLRfemaleinputsignalconnector.
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6)Rightchannelbalancedinputoneuroblock.Items4,5and6arehardwiredinternallyandcan
beusedtocreateadaisychainforconnectingevenmoreamplifiers.
7)Leftchannelbalancedinputoneuroblock.Items7,8and9arehardwiredinternallyandcan
beusedtocreateadaisychainforconnectingevenmoreamplifiers.
8)LeftchannelXLRmaleinputsignalconnector.
9)LeftchannelXLRfemaleinputconnector.
10)Subwooferoutputon4poleSpeakon®connector.Pins1+and2+,aswellas1-and
2-areconnectedinparallel.Minimumloadimpedanceis4ohmsoneachSpeakon®
connector.
11)Subwooferoutputon4poleSpeakon®connector.1+and2+,aswellas1-and2-are
connectedinparallel.Thisconnectorcarriesexactlythesamesignalas10andishardwired
internally.Minimumloadimpedanceis4ohmsoneachconnector.Incaseyouwanttouse
2pieces4ohmsubwoofers,thenwirethemindependently.Onesubconnectedto10,the
secondto11.Alwaysmakeuseofthe4connectionpins(1+and2+,1-and2-)toavoid
contactburn-incausedbytheextremecurrentsflowingthroughtheseconnectors!
12)Rightspeakeroutputon4poleSpeakon®connector.1+and2+,aswellas1-and2-are
connectedinparallel.Alwaysmakeuseofthe4connectionpins(1+and2+,1-and2-)to
avoidcontactburn-incausedbytheextremecurrentsflowingthroughtheseconnectors!
13)Leftspeakeroutput4poleSpeakon®connector.1+and2+,aswellas1-and2-are
connectedinparallel.Alwaysmakeuseofthe4connectionpins(1+and2+,1-and2-)to
avoidcontactburn-incausedbytheextremecurrentsflowingthroughtheseconnectors!
14)Groundliftswitch:thisswitchnormallystaysinthe“EARTH”position.Incaseyouhave
createdagroundloop,youcanswitchittothe“LIFT”position,tohelpyoufindthesourceof
thegroundloop.However,whenthegroundloopissevere,activatingtheswitchwillnothelp
much,andeventuallyoneormoresystemcomponentsmayfail.Whenexcessivenoise,hum
orsysteminstabilityoccurs,poweroffalldevices,andstartconnectingallunitsindividually.
Tunersconnectedtoanoutdoorantennaoracablesignaldistributionsystem,computers,
serialcontroldevicesandlaptopsaretheusualsuspects.
15)Mainsinletconnector:pluginthesuppliedmainscablehere.Themainsfuseislocated
insidetheunitandcanbeaccessedbyremovingthetopcoveroftheunit.Forauthorized
personnelonly!Whenthefuseblowsregularly,checkyoursystemfirst,removeanyground
loopscausedbyfaultyinstallation.Alwayscheckforshortcircuitsonyourspeakerlines,
audiosignallinesandotherconnections.
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Operation
Frontpanellayout
1)Powerswitch:powerontheunitbyflippingtheswitchtothe‘on’position.Inthe‘OFF’position,
ALLelectricalcircuitsaredisabled.Inthe‘on’position,theunitcanbeswitchedtostandby
usinganRS232instruction,whichwillturnoffthemainpowersupply,resultinginverylow
standbypowerconsumption.
2)Submute/selectswitch:duringnormaloperation,pushoncetomutethesubchannel.During
parameterediting,thisbuttoncanbeusedtoselectthesubchannel.Ineditingmode,you
canalsopushmultiplechannelswitchesatoncetoedittheparameterssimultaneouslyforall
channels.
3)Leftchannelmute/selectswitch:duringnormaloperation,pushoncetomutetheleftchannel.
Duringparameterediting,thisbuttoncanbeusedtoselecttheleftchannel.Someparameters
arelinkedforleftandrightchannels.
4)Rightchannelmute/selectswitch:duringnormaloperation,pushoncetomutetheright
channel.Duringparameterediting,thisbuttoncanbeusedtoselecttheleftchannel.Some
parametersarelinkedforleftandrightchannels.
5)DotmatrixLCDdisplaywithbluebackgroundlight.Thestandardtextdisplayedonthenormal
screencanbeeditedusingRS232commands.Thedisplayshowstheactualmasterlevel.On
theright,arrowsymbolsappear.Thesearelocatednexttothethreepushbuttonsusedfor
parameterediting.Thesymbolsmaychangetotext,relatedtothefunctionofthepushbuttons.
6)Menubuttons.Duringnormaloperation,theuppermostbuttonisusedtoenter(returnto)
themainmenu,themiddleandlowerbuttonsareusedforscrollingthroughtheavailable
parametersappearinginthedisplay.Aneditableparameterwillbehighlightedinthedisplay,
andthevaluecanbechangedbyturningtherotaryencoder.Thefunctionofthepushbuttons
willchangewhennecessary.Thefunctionofthepushbuttonsisdescribedontherightsideof
theLCDdotmatrixdisplay.
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LEDVUMeter
Innormalsituations,theLEDVUmeterindicatesthechannel’soutputlevel,where0dBistheabsolute
maximum.TheLED’swilllightupingreen,showingtheactualoutputlevel.
WhenthepushbuttonbeneaththeVUmeterispushedonce,thechannelismuted.TheSGL/ERROR
LEDwilllightuporange.WhentheSGL/ERRORisred,anerrorhasoccurredandthechannelwillbe
disabledormuteduntiltheerrorisremoved.
Whenthemasterlevelisturnedup,theoutputlevelwillincrease.Whenthemaximumsafelevelis
reached,theinternalcompressorwillreducetheoutputsignal.TheupperLED’sintheVUmeterwill
becomeorangetoindicatethemeasureofautomaticgainreduction.Whenthe0dBLEDlightsupred,
theamplifierisclipping.Alwaysavoidclipping!
LCDDisplay
Wheninuse,thedisplaywillshowtheuserdefinabletext.Defaulttextis
CHAMP3D,largefont.Thistextandthefonttypecanbechangedvia
RS232instructions.
Theactualmasterlevelisalsoshown,inthiscase-72dB.
Pushingthepushbuttonnexttothearrowwillallowyoutoenterthemain
menu.Thenextscreenwillpopup
7)Rotaryencoder:innormaloperation,youcancontrolthemastervolumewiththisencoder.
Whenyouenterthemenu,thisencoderisusedtochangetheselectedparametervalue.The
editableparameterwillbehighlightedinthedisplay.
8)StandbyLED:thisLEDlightsupwhentheamplifierisinstandbymode.Thestandbyfunctionis
availableviaRS232instructiononly.WhenthemainspowerswitchisintheOFFposition,all
electricalcircuitswillbedeactivatedandstandbymodewillnotbeavailable.
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Youwillnoticethatanup-anddownarrowhasappearednextto
thepushbuttons.Usethesetoscrollthroughthedifferentmenus.
Whenyouwanttoenteramenu-inthiscasethe“LEVELS”menuis
highlighted-pushtheupperbutton.
Thenextscreenappears.
Nowusetheup-ordownbuttonstoselecttheSUB,LEFTorRIGHT
channelandturntherotaryencodertosetthelevel.Youcanalsopush
thebuttonsunderneaththeLEDVUmeterstoselectthechannels,and
ifnecessary,youcanpushthesebuttonssimultaneouslytoeditthelevel
ofallchannelssimultaneously.Someparametersarelinkedforleftand
rightchannels.
Themenustructurelookslikethis:
LEVELS
MAX LEVELS
SPEAKER WIZARD
CROSS-OVER
EQUALIZER
DELAY
SETTINGS
EXIT
SAVE AND EXIT
SUB
LEFT
RIGHT
MASTER
LEVELS
SUB
LEFT
RIGHT
MASTER
MAXLEVELS
EQUALIZER
BAND
TYPE
FREQ
GAIN
Q
EQUALIZER
LEFTDELAY
RIGHTDELAY
DELAY
CONTRAST
AUTOLD
EXTVOL
LOCKMODE
SETTINGS
CROSS-OVER
TOPTYPE
TOPFREQ
SUBTYPE
SUBFREQ
SUBLOCUT
SUBPHASE
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Hereyoucaneditthelevelsofallchannelsrelativetoeachother.Defaultvalueis0dB.Itis
recommendedtousethisparameterforlevelmatchingonly.Example:youwanttoadjustthe
levelofthesubwooferbecauseitis3dBlouderthantheL/Rspeakers:inthiscasesettheSUB
parameterto-3dB.Afteradjusting,pushtheupperbuttontogobacktothemainmenu,select
“SAVEANDEXIT”andpushtheupperbuttonagaintosaveyourselection.Someparameters,
suchasallaudiorelatedparameters,arenotautomaticallysaved.Systemsettings,suchas
displaycontrast,areautomaticallysaved.
PleasenotethatdecreasingtheMAXlevelwilldecreasethemasterlevel.Whileincreasingthe
MAXlevelwillnotincreasethemasterlevel.
WhentheLEVELSandMAXLEVELSmenuisused,theSGL/ERRORLED’swilllightupingreen,
showingyouwhichchannelisselected.Insomecases,youcanedittheparametersofmultiple
channelssimultaneously.Whenthisisthecase,theselectedchannelwilllightupstrong,while
theselectablechannelswilllightupweak.Pushthechannelselectbuttonssimultaneouslyto
selectthemforsimultaneousparameterediting,thegreenchannelLED’swilllightupstrong
andtheeditableparameterfortheselectedchannelswillbehighlightedintheLCDdisplay.In
somemenus,suchastheequalizerandcrossovermenu,theleftandrightchannelparameters
areautomaticallylinked.ThegreenchannelLED’swillautomaticallylightupstrongforboth
channels.
Thespeakerwizardmenuoffersyouaneasywaytoautomaticallyadjustallaudiorelated
parametersforoptimumcompatibilitywithourmostpopularspeakersets.Enterthespeaker
wizardmenuandfollowtheon-screeninstructions,choosethenumberandtypeofspeakersin
yourset-up.Firstselectthetypeandnumberofspeakersusedinyoursystem,subwoofer(s)as
wellastopspeakers.Afterspeakerselection,thefollowingmessagewillappearinthescreen:
“CHANGEMASTERANDMAXMASTERLEVEL”or“PROCEED”.AdjusttheMASTERleveltoyour
specificneeds.ThevalueoftheMASTERlevelwillbeusedasMAXMASTER.Ifyoudon’twantto
settheMASTERandMAXMASTER,justproceedtothenextstepbypushingtheupperarrow.
Afteradjustment,presstheupperbuttontoenterthe“LOCKMODE”menu.Adjustthemodeif
necessary.Ifyouselect“VOLONLY”or“LOCKED”,youwillbeaskedifyouwanttochangethe
password.Ifyoudon’tchangethepassword,thepreviouspasswordwillremainvalid.
Importantparameters,suchascrossoverfrequency,filtertype,equalizersettingsandlimiter
thresholdswillbeoptimized.Youcanofcourseadjustcertainparameters,suchasequalizer
setting,subwooferphaseanddelaysettingstomatchyourspecificsituation.Wedonot
recommendchangingthemaximumspecifiedlevels,becausethismayresultindamagetoyour
speakers.
LEVELS MAXLEVELS
SPEAKERWIZARD
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Toptypemeans:crossovertypefortheL/Rchannels.Thisparameterislinkedforbothchannels.
Subtypemeans:crossovertypefortheSubchannels
Therearedifferenttypesofcrossovercharacteristicselectable:
OFF->nocrossover,thechannelsworkatfullrange,validforL/Ramplifiersonly.
L-R48->Linkwitz-Riley48dB/octave(default)
L-R24->Linkwitz-Riley24dB/octave
L-R12->Linkwitz-Riley12dB/octave
BUT48->Butterworth48dB/octave
BUT24->Butterworth48dB/octave
FIRST6->Firstorderfilteror6dB/octave
SubfreqandTopfreqmeans:thecrossoverfrequency.Thisisfreelyselectable.
Sublocutmeans:thefrequencywherethe48dB/octavesubsonicfilterwillbeactive.Valid
parametersare:OFFor10to80Hz.FilterslopeisL-R48andcannotbechanged.
Subphase:whensettoOFF,thesubchannelisinphasewiththeL/Rchannels.Whensettothe
“ON”position,subphaseis180°,alsocalledphasereverse.Ifthelowfrequencyresponseof
yoursystemisinsufficient,experimentwiththephasesettingfirst.
FinetuningcanbedoneviatheDELAYmenu.
EQUALIZERONorOFF
BAND:selectband1to4
TYPE:selectequalizertype:HPF,LOSHELF,PEAK,HISHELF,LPF
FREQ:selectequalizerfrequency
GAIN:setequalizergain
Q:setQ-factor
Allequalizerfrequenciescanbefreelyselected.
TheseQ-factorsareselectable:
0.08,0.12,0.18,0.25,0.35,0.50,0.71,1.00,1.41,2.00,2.83,4.00,5.66,8.0,
11.3,16.0
ThehighertheQ-value,themorenarrowthebandwidthoftheequalizer.
IfyouarenotfamiliarwithequalizersettingsandQ-factors,leavetheQ-factortoitsdefault
settingof0.71!
HPFstandsforhighpassfilter:allfrequenciesbelowtheselectedfrequencywillbecut.
LPFstandsforlowpassfilter:allfrequenciesabovetheselectedfrequencywillbecut.
NOTE:withaQ-factorof0.71(default),the-3dBpointequalstheselectedfrequencyforHPF
andLPF.HPFandLPFhaveafixedslopeof12dB/octave.
CROSS-OVER
EQUALIZER
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