DIGISYNTHETIC DP2200 User manual

USERMANUAL
DIGISYNTHETIC
R
DP3200
POWER
EXCELLENTPOWERAMPLIFIER
DIGISYNTHETIC
R
DP4800
DP3200
DP2240
DP1800
DP1400
DP2200
DP1200
CLIP
SIGNAL
PROTECT
ChannelA ChannelB
DPSeries
PowerAmplifier
DP4800
-4
-18
-21 -14
-24 -8
-28
-36 -2
0
-
-18
-21 -14
-24 -8
-28
-36 -2
0
-
-18
-21 -14
-24 -8
-28
-36 -2
0
-
-18
-21 -14
-24 -8
-28
-36 -2
0
-
PROTECT
SIG/CLIP
BRIDGE
PROTECT
SIG/CLIP
BRIDGE

WARNING
DANGER
WARNING
Whenusingelectricproducts,basicprecautionsshouldalwaysbefollowed:
1.ReadalltheSAFETYINSTRUCTIONSbeforeusingtheproduct.
2.Thisproductmustbeearthed.Ifithasmalfunctionorbreaksdown,groundingprovidesapathof
leastresistanceforelectriccurrenttoreduceriskofelectricshock.
Thisproductisequippedwithacordhavinganequipment-groundingconductorandagroundingplug.
Theplugmustbepluggedintoanappropriateoutletthatisproperlyinstalledandearthedinaccordance
withalllocalcodesandordinance.
-Improperconnectionoftheequipment-groundingconductorcanresultinariskof
electricshock.Checkwithaqualifiedelectricianorservicemanifyouareindoubtastowhetherthe
productisproperlygrounded.Donotmodifytheplugprovidedwiththeproduct-ifitwillnotfittheoutlet,
haveaproperoutletinstalledbyaqualifiedelectrician.
3.Toreducetheriskofinjury,closesupervisionisnecessarywhentheproductisusednearchildren.
4.Donotusethisproductnearwater-forexample,nearabathtub,washbowl,kitchensink,inwet
basementornearaswimmingpoolorthelake.
5.Thisproductmaybecapableofproducingsoundlevelsthatcouldcausepermanenthearingloss.
Donotoperateforalongperiodoftimeathighvolumeleveloratalevelthatisuncomfortable.Ifyou
experienceanyhearinglossorringingintheears,youshouldconsultanaudiologist.
6.Thisproductshouldbelocatedsothatitslocationorpositiondoesnotinterferewithitsproper
ventilation.
7.Thisproductshouldbelocatedawayfromheatsourcessuchasradiators,heatregistersorother
productsthatproduceheat.
8.Theproductshouldbeconnectedtoapowersupplyonlyofthetypedescribedontheoperating
instructionsorasmarkedontheproduct.
9.Thisproductmaybeequippedwithapolarizedlineplug(onebladewiderthantheother).Thisisa
safetyfeature.Ifyouareunabletoinserttheplugintotheoutlet,contactanelectriciantoreplaceyour
obsoleteoutlet.Donotdefeatthesafetypurposeoftheplug.
10.Thepower-supplycordoftheproductshouldbeunpluggedfromtheoutletwhenleftunusedfora
longperiodoftime.Whenunpluggingthepower-supplycord,donotpullonthecord,butgraspitby
theplug.
11.Careshouldbetakensothatobjectdonotfallandliquidarenotspilledintotheenclosurethrough
openings
12.Theproductshouldbeservicedbyqualifiedservicepersonnelwhen:
A.Thepower-supplycordortheplughasbeendamaged;
B.Objectshavefallen,orliquidhasbeenspilledintotheproduct;
C.Theproducthasbeenexposedtorain;
D.Theproductdoesnotappeartooperatenormallyorexhibitsamarkedchangeinperformance;
E.Theproducthasbeendroppedortheenclosuredamaged.
13.Donotattempttoservicetheproductbeyondthatdescribedintheuser-maintenanceinstructions.
Allotherservicingshouldbereferredtoqualifiedservicepersonnel.
-Donotplaceobjectsontheproduct'spowercordorplaceitinapositionwhere
anyonecouldtripover,walkonorrollanythingoverit.Donotallowtheproducttorestonortobeinstalled
overpowercordsofanytype.Improperinstallationsofthistypecreatethepossibilityoffirehazardand/
orpersonalinjury.
IMPORTANTSAFETYINSTRUCTION
1

Installation&operatinginstruction
Mainspowerconnection.
Beforeconnectingthepowercabletothemains,alwaysmakecertainthatitisnotdamaged
andthattherearenobarewires,alwaysconnectthepowercabletotheamplifierbefore
switchingitonandonlyremovethecableafterswitchingitoff.
Switchingonandoff.
Inanaudiosystem,it'salwaysbettertoswitchpoweramplifiersonlastandofffirst.
Remembertoswitchofftheamplifierbeforeconnectingittoordisconnectingitfromotherunits
andtoswitchalwaysonfirstthemixerandthentheamplifie:inthismanner,peakswhichare
annoyingandsometimesdangerousparticularlyfortheloudspeakersenclosuresareavoided.
ItisnormalfortheLEDstolightupforafewmomentswhenswitchingon.
Handling.
Donotforceknobsandconnectors,astheycouldbedamagediftreatedwithexcessive
force.
Connectionsandpreventionofpossibleinterference.
Avoidinstallingyourequipmentnearradios,televisions,etc.,sincetheycouldcausenoisy
disturbance.Whenconnectingtheotherunitsinyoursoundsystem,watchoutfortoso-called
earth-loops,whichcancausehum:intheeventofinterference,tryusingtheEARTHswitchon
theamplifier'srearpanel.
Connectorcables.
Toconnecttheamplifiertothemixer,alwaysmakecertaintouseonlysignalcables
(screenedcablesmadeupoftwowiresplusabraidscreen),notpowercables(speaker
cables,normallymadeupoftwowires,usuallywithagreatercross-section):toconnectthe
amplifiertotheloudspeakerenclosures,alwaysusepowercables,notsignalcables,asinthe
lattercaseinfact,thepowerfromtheamplifierswouldbepartiallydispersebecauseofthe
cable'ssmallercross-section.
Takecareoftheconnectorcables.Alwaysholdthembytheconnectors,avoidingpullingthe
wireandavoidknotsandtwistswhencoilingthem:thisgivestheadvantageofincreasingtheir
lifeandreliability.
Aircirculationforcooling.
Amplifier'scorrectcoolingisensuredbyaninternalfan,thespeedofwhichiscontrolledbya
specialsensor(thespeedisproportionaltooutputpowerandthereforethetemperature
generated):remembernevertoblocktheairventslocatedontheunit'ssidesinanyway:theair
necessaryforcoolingpassesthroughthese.
Iftheamplifieriskeptinaflight-caseduringuse,makecertainthatithassufficientopeningsat
boththeamplifier'sairvents.Avoidlocatingitverysmallspaceswhichdon'tallowcorrectair
circulation.
Beforeconnectingtheamplifiertothemainspowersocket,makecertainthatthevoltagecorresponds
withthatindicatedontherearoftheunit(anallowanceof10%isacceptable).
r
2

FEATURE
Perfectelectronicprotections:shortcircuit/overloadprotection,overheating
protectionanddirectcurrentexcursionprotection.
Lownoiseandlowerdistortion
Threeoutputmodes:stereo,monoandbridge(onlyforD1400)
THD+N:0.08%@1kHz
Frequenceresponse:20Hz-20kHz
P
?
?
?
?
?
3

CONTROLPANEL
FRONTPANELA.
DIGISYNTHETIC
R
DP3200
POWER
PROTECT
CLIP
SIGNAL
BRIDGE
ChannelA ChannelB
15
43 22 6
1.POWER:ON/OFFswitch
2.CHA\BLEVEL:Adjustthevolumeoffourchannels
Controloftheinputleveloftheexternalsignal:operateswithcontinual
valueswhichvaryfromfullyclosed(position--thesignalisnot
fedtotheamplifiersections)tofullyopen(position0dB-thesignalis
senttotheamplifiersectionsatthesamelevelasthatwithwhichitarrives
attheinput).Inotherwords,thiscontroloperatessanattenuatorofthe
"
""""
3.PROTECTLEDs
Protectionpilotlights.
IftheseLEDslightup,thisindicatesthatoneofthevariousprotections
safeguardingthedifferentsectionsoftheamplifierandtheloudspeaker
Enclosureshastrippedduetoanoperatingfault.Inthesecases,the
poweroutputisnormallyswitchedoffuntilnormaloperatingconditions
arerestored.
Thefollowingisadescriptionofalltheprotections:
1)THERMALPROTECTIONONTRANSISTOR:thisprotectionintervene
wheneverthereisanexcessiveriseintemperatureoftheinternal
heatsink.
4

2)VOLTAGEPROTECTION:tripsintheeventofashort-circuitor
overload,limitingtheoutputcurrent.
3)CIRCUITDAMAGEPROTECTION:intheeventsofdamage,limitthe
damagetoextend,minishtheloss.
Someprotectionsituationsrequiretheamplifiertobeswitchedoffand
thenbackonfornormaloperatingconditionsberestored.
i
4.LIMITLEDS
Amplifierstatusindicators:theseLEDsareableindicatingthe
operationoftheinternallimiter,wheninserted,ortheclippingofthe
amplifier.TheyarePOST-LEVEL:inotherwordstheydisplaythestatusof
"
5.SIGNALLEDs
Signalstatusindicators:abletoindicateasignalpresenceintheinputs
oftheamplifier.
""
6.BRIDGELEDS(onlyforD1400andD4800)
Bridgeswitchwithyellowindication.Pulltheswitchtothe
PP
Thebridgeposition:
5

8
B.REARPANEL
11
6

8.OUTPUTS
Powerout:outputstobeconnectedtotheloudspeakerenclosures.Amplifier'sA&Boutputs
bothhaveBINDING-POSTconnectorsandspeakerconnectors
Onlyloudspeaker(orloudspeakerenclosuresystems)withintheamplifier's
declaredpowerandImpedanceloadrangeshouldbeconnectedtothe
amplifier'soutputs(seeTechnicalpecifications).Useonlyspeakercables
(two-corecables,normallywitharedandablackwire):donotusescreened
of"signal"cables(cablesnormallyusedformicrophones,instrumentsand
audioequipmentingeneral).
9.GROUNDON/FLOATING
Controlstheseparationoftheelectricalearthfromthatofthechassis.Usingthisselector,
itisoftenpossibletobreakearthloopswhichcanformwhenseveralunitsareconnected
togetherandwhichcancausehumofothernoises.
10.STEREO/BRIDGEselector
Selectorfortheamplifiers2operatingsetting:allowstodecidehowtousetheamplifierin
theaudiosetupconsiderablywithotherunits(crossovers,otheramplifiers,loudspeaker
enclosures).
Thiscontrolshouldonlybeusedwhentheamplifierisoff,otherwisethe
loudspeaker'scomponentscouldbedamaged.
7
A)STEREO
WiththeSTEREOsetting,2separatesignalsaretreatedseparatelybychannelsAandBoftheamplifier.In
otherwords,asignalconnectedtoinputAisonlytreatedbychannelAoftheamplifierandonlyfedto
outputAandasignalconnectedtoinputBisonlytreatedbychannelBoftheamplifierandonlyfedto
outputB. .
B)BRIDGE
WiththeBRIDGEsettingsignalisamplifiedbythetwosections(A&B)oftheamplifier
summedtogether.InotherwordsthesignalconnectedtoinputAis:
1)amplifiedbyboththeamplificationsectionssummedtogether;
2)fedtoasingleoutput(BRIDGE).
Thecharacteristicofthissettingconsistsinthefactthatthereisasignalfedoutwith
doublethepowerandratedimpedance(seeTECHNICALSPECIFICATIONS).
11.INPUTS
Balanceinputs(0dB/30k):inallmodelsbothchannelA&Boftheamplifierhavea
doublebalancedinputwithanCANNONconnectorandaJACKconnectorconnectedin
parallel.Inthismanner,theamplifiersinputsignalcanbeconnectedtoeitherofthese
connectors(greatlyfacilitatingconnections)andifnecessary,canbepassedontothe
inputofanotheramplifierorotherunits(seeillustrations).

CONNECTORCABLE
Thefollowingdiagramsillustratethewiringofthevarioustypesofsocketsthatcanbe
usedwiththeDSPpoweramplifiers.
Toconnecttheamplifiertothemixer,alwaysmakecertaintouseonlysignalcables
(screenedcablesmadeupoftwowiresplusabraidscreen),notpowercables(speaker
cables,normallymadeupoftwowires,usuallywithagreatercross-section):theuseof
unscreenedcablescouldinfactcauseannoyingbuzzesandbackgroundnoise.We
thereforealwayssuggesttheuseofbalancedcablesformicrophonesandlineunits
wheneverpossible.
Toconnecttheamplifiertotheloudspeakerenclosures,alwaysuseonlypowercables,
notsignalcables,asinthelattercaseinfact,thepowerfromtheamplifierswouldbe
partiallydispersedbecauseofthecable'ssmallercross-section.
Takecareoftheconnectorcables.Alwaysholdthembytheconnectors,avoiding
pullingthewireandavoidknotsandtwistswhencoilingthem:thisgivestheadvantageof
increasingtheirlifeandreliability.Checkyourcablesperiodically,makingcertainthatthey
areingoodcondition,thattheconnectorsarecorrectlywiredandcontactsperfectly
efficient:infact,manyproblemsandsetbacks(faultycontacts,groundhum,disturbance,
etc.)areduetotheuseofunsuitableoffaultycables.
Balancedcannonfemaleconnector
PCOUTPUT
HOT(+)
GROUND
COLD(-)
8

SPECIFICATION
PowersupplyDP3200RMS21000W(8)2ΩΩ
ΩΩ
ΩΩ
ΩΩ
Ω
ΩΩ
Ω
ΩΩ
Ω
ΩΩ
Ω
Ω
Ω
Ω
Ω
DP2200RMS2450W(8)2750W(4)
BRIDGE11300W(8)
DP1200RMS2350W(8)2600W(4)
BRIDGE11000W(8)
1700W(4)
DP2240RMS2850W(8)21300W(4)
DP1800RMS2650W(8)21000W(4)
DP1400RMS2450W(8)2700W(4)
BRIDGE11300W(8)(onlyforDP1400)
D4800RMS4x450W(8)4x700W(4)
BRIDGE2x1300W(8)(onlyforD4800)
SNR>90dB
THD+N0.08%@1kHz
IMD0.1%8,1kHz@1W
Frequencyresponse20-20kHz(+0,-0.5dB)
Inputsensitivity/impedance0dB(0.775Vrms)/30k
Crosstalk>50dB
Dampingfactor>500:1@1kHz/8
Phaseresponse-18@20Hz
+25@20kHz
Voltagegain40dB@1kHz/8
ProtectionDC,overload,thermalandshortedprotection
StandardpowerAC230V10%50-60Hz
Dimension483132495mm
Grossweight42kg(D3200)
P
P
P
9