Soaring Audio SLC-A600 User manual

OARING UDIO INC.
FeaturingthePatented
SLCSignalLossCompensator
SLC-A600
USER’SMANUAL
AudiophileClassAB
HighPerformance
DualMonoblock Amplifier
QuadSLCSignalLossCompensator
R
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AmplificationFeatures
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Carefulattentionhasbeenpaidtophaseresponseatallfrequencies.
Itisfaithfultotheoriginal.
Patentedanalogimageenhancementprovides:
outputscombinetoform
asolidphantomcenterchannelthatiswideanddeep.
dynamicrange,atany
outputlevel.
TheSLC-A600isaquadSLCsystem.Twochannelsworkwiththetwo
monoblockamplifiers.ThetwochannelsoftheAuxiliarySLC
Extremelywideanddeepsweetspot.Idealforhometheaterseating.
Highcurrentoutput:floorpoundingbasswithsuperdynamicmids
andhighs.
Fastslewrate:nosmearingofharmonicdetail.Youwillheardetails
inyourfavoriterecordingsthathavebeenhiddenforyears.
Massiveheatsinkseliminatetheneedforafan.
Powersupplyrippleissolowthatyou’llthinktheamplifierisoffwhen
thesourceismuted.
Optimizedforfunlisteningwithcleardialogueandawesomesound
effects.
AcousticRestoration:smoothsoutdigitalgrit.
Enhancedimaging:leftandrightenhanced
Dynamicdetailing:increasestheperceptual
canbeused
inliveperformances,studiorecordings,musicdistributionsystems,andin
alargehometheaterwithahighperformanceamplifierslikeapairof
Terradactyls.
QuadSLCSLCignalossompensator
SpecialDesignFeatures
12VDCRemoteTurn-On
SoftStart
-Frompreamporsurroundsoundprocessor
-Lowinrushcircuitlimitsturn-oncurrenttoabout15Amps
Congratulations!
Youwillreceivemanyhoursofincrediblelisteningpleasurefromthis
superblydesignedamplifier.Itwillenableyoutoheardeeperintoall
therestofyouraudiosystem.Formaximumenjoyment,performance
andsafety,readthismanualbeforeoperatingtheamplifier.
2

WARNINGS
WARNING: TOREDUCERISKOFELECTRIC
SHOCK,DONOTREMOVEANYPARTOFCASE.
NOUSER-SERVICEABLEPARTSINSIDE.
REFERSERVICINGTOQUALIFIEDSERVICEPERSONNEL.
!
CAUTION
RISKOFELECTRICSHOCK
DONOTOPEN
ATTENTION
RISQUEDECHOCELECTRIQUENEPASOUVRIR
Thissymbolisintendedtoalerttheusertothepresenceofuninsulated
"dangerousvoltage"withintheproduct'senclosurethatmaybeofsufficient
magnitudetoconstituteariskofelectricshocktopersons.
!Thissymbolisintendedtoalerttheusertothepresenceofimportantoperating
andmaintenance(servicing)instructionsintheliteratureaccompanyingthe
product.
CAUTION: TOPREVENTELECTRICSHOCK,MATCHWIDE
BLADEOFPLUGTOWIDESLOT,FULLYINSERT.
WARNING: TOREDUCETHERISKOFFIREORELECTRICSHOCK,
DONOTEXPOSETHISEQUIPMENTTORAINORMOISTURE.
IMPORTANTSAFETYINSTRUCTIONS
1.Readtheseinstructions.2.Keeptheseinstructions.
3.Heedallwarnings.4.Followallinstructions.
5.Donotusethisapparatusnearwater.6.Cleanonlywithdrycloth.
7.Donotblockanyventilationopenings.Installinaccordancewiththemanufacturer'sinstructions.
8.Donotinstallnearanyheatsourcessuchasradiators,heatregisters,stoves,orotherapparatus(including
amplifiers)thatproduceheat.
9.Donotdefeatthesafetypurposeofthepolarizedorgrounding-typeplug.Apolarizedplughastwoblades
withonewiderthantheother.Agroundingtypeplughastwobladesandathirdgroundingprong.Thewide
bladeorthethirdprongareprovidedforyoursafety.Iftheprovidedplugdoesnotfitintoyouroutlet,consultan
electricianforreplacementoftheobsoleteoutlet.
10.Protectthepowercordfrombeingwalkedonorpinchedparticularlyatplugs,conveniencereceptacles,and
thepointwheretheyexitfromtheapparatus.
11.Onlyuseattachments/accessoriesspecifiedbythemanufacturer.
12.Useonlywiththecart,stand,tripod,bracket,ortablespecifiedbythe
manufacturer,orsoldwiththeapparatus.Whenacartisused,usecautionwhen
movingthecart/appatuscombinationtoavoidinjuryfromtip-over.
13.Unplugthisapparatusduringlightningstormsorwhenunusedforlongperiods
oftime.
14.Referallservicingtoqualifiedservicepersonnel.Servicingisrequiredwhen
theapparatushasbeendamagedinanyway,suchaspower-supplycordorplugis
ThissymbolmeansDoubleInsulated.
Premiumpartsareusedsoathirdwiregroundisnotneeded.Thiseliminatesthepossibility
ofgroundloops,makingthebackgroundquieterandpreventinghum.
3

damaged,liquidhasbeenspilledorobjectshavefallenintotheapparatus,theapparatushasbeenexposedto
rainormoisture,doesnotoperatenormally,orhasbeendropped.
Duetothelargepowerdrawwhentheampisbeingused,useonlythesupplied14gauge
powercordoronethatisheavier.Onlyoperatethisunitfromthetypeofpowersourceindicatedontheunit
label.Aslongastheunitisconnectedtothewalloutlet,itisnotdisconnectedfromtheACpowersourceeven
iftheunititselfisturnedOFF.Alwaysdisconnectbygraspingthepowerplugitself,neverpullonthecord.
Donotoverload walloutlets,extensioncords,orotherreceptaclesasthiscanresultintheriskofelectricshock
orfire.Pleasenotewattsusedonunitlabel.
Donotplaceacontainerwithliquidontopofthisunit.Donotusethisunitnearwater(for
example:aswimmingpool,bathtuborsink).Donotallowwatertoenterthisunitorallowtheunittobecome
wet.Theapparatusshallnotbeexposedtodrippingorsplashing.
Neverpushanykindofobjectsintothisunitthroughopeningsastheymayshort-out
partsormaytouchdangerousvoltagepointsthatcouldresultinanelectricshockorafire.Ifanyliquidor
objectfallsintotheunit,unplugitandhavequalifiedpersonnelcheckitbeforeoperatingitanyfurther.
Referallservicingtoqualifiedservicepersonnel.Openingorremoving
thecovermayexposeyoutodangerousvoltageorotherhazards.Ifreplacementpartsareneeded,make
suretheservicepersonnelusereplacementpartsspecifiedbythemanufacturerorthathavethesame
characteristicsastheoriginalpart.Fire,electricshock,otherhazardsordecreaseinperformancemayresult
fromunauthorizedsubstitutions.Afteranyrepairsorservicetothisproduct,havetheservicepersonnel
performsafetycheckstomakesurethattheproductisinproperoperatingcondition.
Whenconnectingtheproducttootherequipment,turnoffthepowerandunplugallofthe
equipmentfromthewalloutlet.Thiswillavoidpossibleelectricshockandseriouspersonalinjury.When
makinganyconnections,readandfollowtheinstructionsofthismanualandtheowner'smanualoftheother
equipment.
Beforeyouturnontheproduct,reducethevolumetotheminimumlevel.This
willavoidsuddenhighvolumewhichmaycausehearingorspeakerdamage.Neverallowtheproductto
outputdistortedsoundforalongtime.Itmaycausespeakeroverheatingandfire.Yourhearingispriceless.
Ifyourearsringafterlistening,youarelisteningtooloudfortoolong..
PowerSources:
Moisture&Water:
Liquid&ObjectEntry:
Servicing&ReplacementParts:
Connections:
SoundVolumeandDistortion:
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IMPORTANTSAFETYINSTRUCTIONS(cont.)
TRICKS&TIPSFROMTHEGOLDENDESIGNTEAM
(Seelastpagefor“TheBirthofanIncredibleAmp”)
Professor:
GoldenEars:
BeanCounter:
Dr.BillAveryexplainsthescientificreasonsfor
recommendationsinthismanual.
DanielKolbetgivesideasthatwillimprovethequalityofthe
soundinyourset-up.
TheCFOcomplainsaboutaddedcosts.TheGolden
Designteamalwaysinsistedonqualityofsoundoverthecheapestmethod.
Gotothewebsitesoaringaudio.comtofindotherTricks&Tips.
HavesomeTricks&Tipsofyourown?Emailthemtousandwemayaddthemtothe
Tricks&TipLibrary.
4

Formaximumperformanceandlife,keepyouramplifiercool.
Ventilation:
Professor:
Heatsinksandopeningsonthecabinetareprovidedtoensurereliable
operationandtoprotecttheproductfromoverheating.Theopeningsandheatsinksshould
neverbeblockedorcovered.
Forproperairflowthroughthebottomopenings
andthroughtheheatsinks,donotplacetheunitonanysoftsurfacesuchasabed,sofa,or
rug.
Thesinglemostimportantthingyoucandotoextendthelifeof
electronicproductsistokeepthemcool.Forevery10C(18F)hotterthat
equipmentruns,thelifeofthecomponentsiscutinhalf.Sincewehave
eliminatedtheneedforafanbyusingmassiveexternalheatsinksandmany
internalheatsinks,itisabsolutelycrucialthattherebeadequateairflow
aroundtheamplifier.Donotplacetheamplifierinanenclosedcabinet.
Theremustbeatleast3inchesoffreespaceonbothsides,
back,andthetop.Thefrontmustbeopen.
o o
BeanCounter: OurProductionManageremailedusthataddingafanwould
lowercosts.Heatsinkscouldhavebeenreducedandmanyoftheexpensive
holesinthetopandbottomcouldhavebeenavoided.Butafanmeans
backgroundnosieandcanmakespeakersbuzz,sothefanwasvetoed.
InstallationforSLC-A600
RearConnections (SeeFig.1onPage6)
ACPowerConnectors
2RCAorXLRInputs
Speakers
Inordertoachievethemaximumpossibleperformanceatthe
highestplayinglevels,itisimportanttouseaheavydutypowercordsuchasthe14gauge
onessupplied.Itisbesttoplugdirectlyintothewall.Ifaplugstriporextensioncordmust
beused,theyshouldbeasheavyasthepowercord.Useonlythepowersourceindicated
onthelabel.BothmonoblocksmustbepluggedintoAC.
(Rightisontheleft.)Turntheallthewaycounterclockwise
beforemakinganyconnections,otherwiseyoucaninjurethespeakers.TheINLEDs
reflectthelevelofthesignalgoingintotheInputs.(Seepage9.)
Youmay wanttotryrunninginputsdirectlyfromthesourcetotheSLC-A600.
Thiswillpreventthesoundfrombeingdegradedbyanypieceofequipment
placedinbetweenthesourceandtheSLC-A600.However,somesourcesmay
havetooweakofasignalformaximumSLCeffect.Askyourdealerorcheckthe
websiteforwhatequipmenthasbeenfoundtoworkwellwiththeSLC-A600.
TheSLC-A600willdrivespeakerloadsfrom4-16ohms.300watts/channelat
8ohms
VOLUME
Conespeakerslosetheirflexibilitywithage.Thepowerfulbassmay
tearolderspeakercones.Speakerdamagecanoccurbeforeyourheardistortion.
Beforeconnectingtheproducttootherequipment,turnoffthepowerandunplugalloftheequipmentfromthe
walloutlet.Thiswillavoidpossibleelectricshockandseriouspersonalinjury.Whenmakinganyconnections,
readandfollowtheinstructionsofthismanualandtheowner'smanualoftheotherequipment.
SpeakerWire: TheSLC-A600cansupplyover9ampsofcurrenttothe
speakerload.ThismeansthatwiththeSLC-A600,weareconcernedwith
inductancemuchmorethancapacitance.Ingeneral,wirethatis14gaugeor
heavierwithlowinductancewillgivethebestperformance.
SpeakerWarning:
5

6
FIG.1RearPanelSLC-A600

GoldenEars:
BeanCounter:
GoldenEars:
Atleastonceayear,cleanall
audioconnectionsonyoursystemwithisopropylalcohol.
12VDCRemoteTurn-On
Whatdoeshum120dBbelowthepeakoutputmean?
Performthehumtestyourself.
Itisbesttousethesamelengthofspeakerwireforapairof
speakers.Notallspeakercablessoundthesame,sotrydifferentones.
Cheaperconnectorsareavailableoverseas.WhybuyCardas
connectorsintheUSAandshipthemoverseastothemanufacturer?You
guessedit:theoxygenfreecopperandshortsignalpathmakethemsound
better,workbetter,andlookrealcool.
Tightenallconnections,aslooseconnectionscancausearcing
andcorrosion.Bothcandegradethesound.
Thisisanoptionalconveniencefeature.Twoscrewterminalson
thelowerrightcanbeusedtoconnecttotheremoteturn-onfeatureofsomepreamplifiers
andsurroundsoundsystems.Makesuretheplusandminusareconnectedproperly.The
ampmustbeturnedOffthesamewayitisturnedOn:Ifremoteturn-onisusedtoturnOnthe
amp,thenitmustalsobeusedtoturnOfftheamp.IfthefrontpowerbuttonisusedtoturnOn
theamp,thenitmustalsobeusedtoturnOfftheamp.Theturn-oncircuitisdesignedto
respondtoawiderangeofvoltages.Itwillworkfrom3VDCto18VDC.
Noiseismeasuredindecibels
(dB).ThenoisefloorofanormalCDis96dBbelowpeakoutput,alimitationof
16bitencoding.Ifyougofrom96dBtothe 120dBoftheSLC-A600,thereisa
differenceof24dB.Thisisnot25%better,becausedBarenotlikenormal
numbers.WithdB,every3dBlowerishalfthenoise.SotheSLC-A600isover
100timesquieter.(Withhum,themoredBsbelowthepeakoutput,thequieter
itis.)Thismeansthatthehumcomponentsarenotlouderthanthenoisefloorat
only1wattoutput.Inotherwords,youcanenjoythefulldynamicrangeofaCDat1watt
outputwithoutthehumdegradingtheCD’snoisefloor.
CardasSpeakerconnectors
+
+
RightandLeftareinthesameorientationasRight-LeftRCA
connections.Wiresgooneithersideofthecenterpostbetweencenterpostandcopper.Be
suretoconnectthesideofthespeakerwiretothesideoftheCardasconnectorembossed
with.Firmlytighteningthescrewswillgiveyoubettersound.
Withtheampknobswhereyounormallylistenand
everythingoffexcepttheamp,stickyourheadascloseaspossibletothecenterof
thewoofer.(Don’ttouchit!)Withmostampsyouwillhearbackgroundhum.The
SLC-A600iscompletelyquiet.Checkyourotherequipment:Preamp-turniton
andrepeatthetest.CD/DVD-plugdirectlyintotheampinputs.Playsomething,
putiton,andthenlistenforhum,motornoiseandbackgroundclutter.
(Thisisafanatic’stestforanentiresystem.)Clean
aCD.ThenputathumbprintonthebottomsideoftheCD.PlaytheCDandlisten
carefully-theCDplayerwillcompensateforthethumbprint,butitwillnotmakea
perfectcorrection.ThencleantheCDandlistenagain.Ifyoucanhearthe
differencewithandwithoutthethumbprint,thenyoursystemiscapableof
revealinggreatspatialdetail.Ifyoursystemdoesnotpassthistest,thenthefault
isnotintheSLC-A600.
PAUSE
Performthethumbprinttestyourself.
7

8

9
OperationofFrontControls
ControlsonRightSide
PowerSwitches:Upper:Lower:
RedPowerLEDs:
AmplifierMasterVolume(R&L):
AuxillarySLCOutputLevel:
SignalLossCompensator(SLC)
Upperset:AuxiliarySLCLowerset:DualMonoblockAmplifier
InpuLED
OutputLED
InputGreen
InputRed
OutputGreen
OutputRed
PushONLeftMonoblockRightMonoblock
IlluminatewhenON
Lowerrotaryvolumecontrolknobonrightside
Upperrotaryvolumecontrolknobonrightside
Eachisindependent:Theleftknobscontroltheamountofenhancementof
thesignalfortheleftandrightchannels.Eachchannelhas4LEDs:
tpairontheleft-reflecttheleveloftheRCAorXLRInputs.
Adjustedwiththeoutputlevelofthepre-amp.
pairontheright-reflecttheamountofenhancement.
AdjustedbythetwoSLCknobsontheleftside.
indicatespresenceofnormalsignallevelforoptimumenhancement.
IfGreenINlightisnoton,signalINontherearRCAinputscanbeincreased.The
unithasbeendesignedsothatduringnormalmusicpassages,thegreenInput
LEDshouldbeon.Ifitnevercomesonoronlyveryoccasionally,youareprobably
notobtainingthebestsignaltonoiseratiofromyoursystem.Forgooddynamic
rangethegreeninputLEDwillbeonmostofthetime.
indicatesthatthemaximumlevelforwhichtheinputwasdesignedhas
beenreached(5VoltsRMS).Thiswillonlyhappenifthepreampistoohigh.
ClippingoccursjustabovewhentheredLEDcomeson.Adjusttheinputlevelso
Backdownontheoutputlevelofthepreamp if
theINredLEDcomeson.
indicatesagoodenhancementtothesignal.
indicatesthatthemaximumdesignlevelofenhancementhasbeen
reached.Thislightshouldnormallynotcomeon,turntheknobdowntilitgoesoff.
1.WithpowerOFF,turnlefttwoknobsto12o'clock.
2.PushPowerONandstartplayingtheloudestpiecethatyouaregoingtoplay.
3.Wait30secondstowarmup,turnupMasterVolumetodesiredlevel.
4.INLEDs:IfgreenINlightsdonotcomeonwithaloudpassage,increasetheinput
levelfromthepreamp.
AdjustinputlevelsotheredINlightscomeon.
5.TurnupLeftSLCknobuntilOUTredLEDblinksoccasionally,
thenbackoffalittle.
6.TurnRightSLCknobuntilimageiscentered.
7.Tocontrolvolume,useMasterVolumeortheremotecontrolonthepreamp.
8.Forlessenhancement:turnleft&rightcontrolsdown,thenturntheMaster
Volumeallthewayup.Adjustthevolumewithonlytheleft&rightcontrols
forbalance.
ControlsonLeftSide:
set
then
never
InitialSet-upofSLC&PhantomCenterChannel
theINredLEDcomeson.
Thisampiscapableofblowingoutmanyspeakers
never
TurnMasterVolumealltheway
down.WARNING:

Troubleshooting
Ifyouareexperiencingproblems,checkthewiring.
REDPOWERLEDoff.
Thereisnooutput.
Onechanneldoesnotwork.
GREENINPUTLEDdoesnotcomeon.
Wiringcauses90%of
problems.
Theunitisnotturned-on.Push-inPOWERbuttonoruse
remoteturn-onremotecontrol.Isthepowercordpluggedintoboththebackofthe
unitandintoasuitablepoweroutlet?
Hastheunitwarmedup?Ittakesabout30secondsfrom
whenthePOWERbuttoninpushedin.IstheMASTERVOLUMEturned-up?
(Neverstartwithitturnedup-youcandamagethespeakersoryourears!)Is
theresignalintotheinputjacks?Useavoltmeterorplugintoanotherpieceof
equipmenttoconfirmthatasignalispresent.
powercordsarepluggedin?power
switcheson?
S
S
BothBoth
Thesimplestwaytocheckforpoweratthe
outletistounplugtheampandpluginalight.
ignalINontherearRCAinputscanbe
increased.(SeeOperationofFrontControls.)
ignalINontherearRCAinputsistoohigh;
reducethelevelfromthesource.TheseLEDsshouldcomeon.(See
OperationofFrontControls.)
Turnupthechannelknobsonthe
leftside.
Turndownthechannelknobsontherightside.
Therearetwopossibilitiesthatyoucan
fix.
1)Blowncircuitbreaker:Checktomakesurethereispowertotheampfromthe
outlet(thecircuitbreakermayhaveblown).Thesimplestwaytocheckforpower
istounplugtheampandpluginalight.Ifthelightdoesnotwork,thecircuit
breakerhastrippedbecausetherearetoomanyappliancesonthecircuit.
2)Thermalshut-down:Theleftandrightchannelseachhaveathermalprotector
thatwillturntheamplifieroffifeithersidegetstoohot.Theamplifierisvery
conservativelydesignedandcancontinuouslyputout300Wattstoeachchannel
indefinitelywithoutgettingtoohot,evenwhilesittingina100Froom.Theonly
waythatthethermalprotectorcanoperateisifacomponentfailedintheamplifier
ortheamplifierhasbeenplacedinaconfinedspaceblockingproperventilation.If
theamplifierisplacedonashelf,theremustbeatleast3”clearanceonbothsides,
theback,andthetop.Thefrontoftheamplifiershouldbenearthefrontofthe
shelfandthewholefrontareamustbeopen.
REDINPUTLEDcomeson.
GREENOUTPUTLEDdoesnotcomeon.
REDOUTPUTLEDcomeson.
TheAmplifiershutsoffunexpectedly.
never
o
10

Warranty
2YearPartsandLabor
5YearParts(SeewebsiteforcurrentLaborrate.)
Warrantyisforanymanufacturingdefectsorearlycomponentfailuresandis
limitedtorepairorreplacementoftheunit.SoaringAudioisnotresponsiblefor
anyconsequentialdamageduetonotfollowingtheinstructionsinthismanual.
ReadtheTroubleshootingsectionofthismanualandcheckthewebsiteforFAQ.
Callyourdealerbeforeshippingtheunittous,assomethingsmaybeabletobe
handledbylocalqualifiedservicepersonnel.Youmayalsoemailusaboutyour
problem([email protected])andtechnicalsupportwilloffer
suggestions
ShiptheunittouspusingALLoftheoriginalshippingmaterial.
Includeacopyofthereceiptandindicatewhattheproblemis.Besuretoinclude
yourreturnaddress,phonenumberandemail.Mostrepairswillbecompleted
withintwobusinessdays.Wepayreturnshippingforwarrantyrepairs.
Problemscausedbyusererror(e.g.waterintheunit)willbebilledparts,laborand
returnshipping.Wewillcontactyoubeforebeginningrepairswithanestimate
andtoreceiveyourcreditcardinformation.
repaidandinsured
11
Thermalshut-down
Amplifiershutdownduetoblownfuses:
(cont.)
Toseewhetherthethermalprotectionshutofftheamplifier,verybriefly-much
lessthanonesecond-touchthefins.Ifyoucanholdyourhandorafingerforone
secondcomfortably,thenitisprobablynothotenoughtohavetrippedthethermal
sensors.Ifitfeelsveryhot,thesensorscouldhavetripped.Inthatcase,turnoff
ordisconnecttheamplifierandwaitfifteenminutes.Aftertheamplifierhas
cooled,relocateitinamoreopenplaceandtrypluggingitinandturningiton.
Ifthefinsarenowcomfortablycooltothetouch,ifyouknowthatthepowerisgood
totheoutlet,andifafterpressingthepowerONbuttontheredLEDdoesnotcome
on,thencontactyourdealerforinformationonhowtoobtainhelpfromqualified
servicepersonnel.
Therearetwelvefuseswhichcanonly
bereplacedbyqualifiedservicepersonnel.Thecircuitsareconservatively
designed.Thefuseswillnotblowinnormaloperation.Ifafusehasblown,itis
probablybecauseacomponentwhichisnotuserreplaceablehasfailed.

2900FantasyLaneSparksNV89441www.soaringaudio.com
775-425-8000775-425-3000[email protected]
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Copyright2011SoaringAudioInc.Allrightsreserved.Products,featuresandspecificationssubjecttochangewithoutnotice
Specifications
SLC-A600
LoadImpedance:
OutputPowerperChannel:
InputLevel:
Weight:
Watts:
Hum:
Ratedfor4to16ohmsinStereomode
300+Wattsat8ohmsRMS
1-4voltsRMS
70pounds
12pluggedin;120on-idling;1000fullpower
Typicallyover120dBbelowpeakoutput(Overa100
timesquieterthanthenoisefloorofaCD.)
RequiredACMains:
FrequencyResponse:
Grounding:
Options:
60Hz120VAC
-3dBfrom0.1Hzto300kHz
at1watt
Doubleinsulated.Premiumpartsusedsoa
thirdwiregroundisnotneeded.Thiseliminatesthe
possibilityofgroundloops,makingthebackgroundquieter
andpreventinghum.
Rackmountkit
alancedInput
240VAC
B
DualMonoblockAmplifer
withQuadSLCProcessor
®