Coda 61 Mono Amplifier User manual

Coda
Brand
Coda
Model
61 Mono Amplifier
Category
Audio amplifiers
Type
User manual
OPERATION MANUAL
AMPLIFIER 61.0
1
2
3
10
SAFETY PRECAUTIONS
INTRODUCTION
DETAILEDINSTALLATION
DESIGNPHILOSOPHY
TECHNICAL DATA
CARE&HANDLING
WARRANTY &DISCLAIMER
WARRANTY REGISTRATION
8
5
6
7
HIGHBIAS
MONO
AMPLIFIER
61.0
OUTPUT- OUTPUT+
BIAS RANGE
G-300W
Y-5W
!
CAUTION
CAUTION
WARNING
WARNING
1
SAFETY PRECAUTIONS
CAUTION -
-
-
-
-
CAUTION: TOPREVENT ELECTRIC
SHOCK,DONOT REMOVECOVER.
NOUSERSERVICEABLEPARTS
INSIDE,REFERSERVICING TO
QUALIFIEDSERVICEPERSONNEL.
THISSYMBOL IS TO ALERT YOUOF
THEPRESENCEOFUNINSULATED
DANGEROUSVOLTAGEWITHIN THE
UNIT'SENCLOSURE THAT MAY BEOF
SUFFICIENT MAGNITUDE TO
CONSTITUTE A RISKOFELECTRIC
SHOCK.
THISSYMBOL ISINTENDED TO ALERT
YOUOF THEPRESENCEOF
IMPORTANT OPERATING AND
MAINTENANCEINSTRUCTIONSIN THE
LITERATURE ACCOMPANYING THE
UNIT.
WARNING:TOPREVENT FIREORSHOCKHAZARD,DO
NOT EXPOSE THISUNIT TORAINOR
MOISTURE. TO AVOIDELECTRICAL SHOCK,DO
NOT OPEN THEUNIT.REFERSERVICING TO
QUALIFIEDPERSONNEL.
Neverinstallorremovethepowercordfromthechassis
unlessithasbeendisconnectedfromthe ACpowersource
first.
Neverpullonthepowercordwhenremovingitfroman AC
powersource.Graspitbytheplug.
Donotleavethepowercordconnectedtoan ACpower
sourceunlessitisconnectedtotheunit.
Itisrecommendthatduringextendedperiodsofnon-use
thattheunitspowercordbeunpluggedfromits ACpower
source.
Routethe ACpowercordsothatitwillnotbedamagedor
walkedon.
!
Thankyouforpurchasingthe AMPLIFIER61.0
Thisamplifierisaprecisiondevice,designedinanefforttoprovidethelistenerwith
unmatchedsoundqualitythroughsuperbdesignandconstruction.
Althoughitsoperationisfairlysimple,inordertooperateyouramplifierproperlyandto
realizeallofthecapabilitiesofthe61.0werecommendthatyoureadthisentiremanual
carefully.
INTRODUCTION 2
DETAILED INSTALLATION 3
I.Connections
Theconnectorsandcontrolsareclearlymarkedonthebackpaneloftheamplifier.Notethe
correctleftorrightchannelorientation. Thefunctionandchannelmarkingsontherearpanel
correspondtothefrompanelcontrolsandtheirsignalpaths.
1. Theunbalancedandbalancedinputsshouldbeattachedtotheappropriateunbalanced
andbalancedoutputsofapreamplifiereitherdirectlyorthroughacrossoverorprocessor,as
appropriatetotheapplication.
2.Theleftoutputandrightoutputshouldbeattachedtotheleftandrightspeakers
respectively.
WARNING:PleaseensurethatthepowerswitchisturnedOFFwhileyouareconnecting
theamplifier.Connectingordisconnectingcableswhiletheamplifierispoweredoncould
causedamagetoyourspeakers.
3. The AClineinputshouldbeconnectedtoan ACoutletwiththepowercableprovidedwith
theamplifier.
4. Thefuseandvoltageselectorunithousesa5x20mmslow-blowfuseandavoltage
selectorcartridge.Ensurethatthevoltage,visiblethroughasmallwindownexttothe AC
input,issettotheappropriatevoltageforyourcountry.Whenchangingvoltages,ensurethat
thepowercableisdisconnectedfromtheamplifier.
NOTE:Ifthefuseinyouramplifierblows,contactaCodadealerorcallCodadirectlybefore
attemptingtousetheamplifieragain.
5. Thepowerswitchcanusuallybeleftonwhentheamplifierisfunctioningcorrectly.Withthe
biasdisabledtheamplifierwilldrawnegligiblecurrentandcanthusbeleftin “standby”
indefinitely.
2
3
4
6
8
USE ONLY SPECIFIED FUSE TYPE
NEG. OUTPUT
POS. OUTPUT
2
5
1
PUSHPUSH
12 2
DETAILED INSTALLATION 4
II.FrontPanelControlFunctionsandIndicators
1. Thebiascontrolbuttonenablesanddisablestheamplifierbytogglingthebiaswhich
enablestheamplifier’soutputsandswitchingshuntingrelaystomutetheinput.
2. TherailstatusLEDsindicatethatthepositiveandnegativeamplifierrailsareenabledand
working.
Note:Ifapowerinterruptionoccurstothesystemtheamplifierwillpoweronwiththebias
off.Pressthebiasbuttontoresumeuseoftheamplifier.
HIGHBIAS
MONO
AMPLIFIER
61.0
OUTPUT- OUTPUT+
BIAS RANGE
G-300W
Y-5W
5
DESIGNPHILOSOPHY
I.DesignPhilosophyand Approach
Thesubtletyofthedesignprocessatthislevelofperformancemakesitimpossibletoeasily
explainalloftheadvantagesinherentinthe61.0.However,wepresenthereanoverviewto
giveyouanunderstandingofsomeofitsuniquefeaturesandanideaofthelistening
experienceyoucanexpect.Oftenaparticulartechniquehasnumerousunrelatedadvantages
andpossibilities.Wemakeeveryefforttoexploittheseadvantageswiththefinalresultbeing
anamplifierthatperformsbetterthanthesumofitsindividualfeaturessuggest.
ThetopologyandcomponentselectionisbuiltonthefoundationestablishedbytheCoda
System100.Balancedinterconnectionsareprovidedtotakeadvantageoftheirgreaternoise
rejection.Differentialvoltagegainthroughoutprovidesexceptionalrejectionofexternalnoise
andcontributestotheinherentDCstabilityofthecircuit. Thisallowsdirectcouplingwithout
servocircuitry. Theunitalsousesoutputfollowersoperatingwithoutfeedback.
Excellenthighfrequencydesignensureslinearoperationathighspeed,andtranslatesintoa
sonicreproductionwhichisextremelytransparentincharacter. Thepowersupplytakesa
verydirectapproachtohighperformance.First,topqualitytoroidaltransformersandover
280,000uFofcapacitancewithverylowESRandinductanceareused.Foroptimum
performanceandreliabilityallcircuitryremainscontinuouslypowered.
ThespecificationsareconsistentwithwhatwouldbeexpectedInahighcurrentamplifier
design.Inthisdesign,however,anunusualdegreeofattentionhasbeenpaidtosonically
meaningfulparameters.
Forexample,thecurrentstageiscapableofproducingpeakcurrentsinexcessof100
Ampereswithadegreeoflinearityandspeedunmatchedbyotherdesignsproducingonlya
fractionofthiscurrent. Thisisachievedbytheimplementationofseveraldistinctcircuit
features.
Extremelywidebandwidthtransistorsareusedintheoutputstageinsteadoftheusual TO3
devicesusedinotheroutputdesigns.Eachchanneluses28individualoutputtransistorswith
acombinedpowerratingof1500Wattsand120 Ampereswithabandwidthof50Mhz.
The61.0usesbiasvoltagesandcomponentvalueswhichhavebeenspecificallyselectedto
produceaprecisiontransitionwithnoabruptchangesindistortionoroutputimpedance. This
“PrecisionBias”techniqueyieldsseamlessperformanceregardlessofthecomplexityofthe
loadimpedanceandisparticularlyeffectiveateliminatingIMdistortionwhichoftenoccursin
theseinstances.
6
DESIGNPHILOSOPHY
I.DesignPhilosophyand Approach(continued)
Tomaintain “PrecisionBias”requiresanadvancedbiascircuitthatmusthaveaveryhigh
degreeofstabilityunderawiderangeoftemperaturesandloadconditions.Mostamplifier
biasnetworksareofsuchhighimpedanceandpoorthermalregulationthatattheextremes
ofoperation,biascurrentsareineffectivelycontrolled. Advancedtrackingtechniquesusedin
the61.0resultinabsolutecontrolofbiascurrentsunderallconditions.
Themainpowersupplyoftheamplifierconsistsofa3000VA transformerwithindependent
rectifierstoisolatethechannelsfromoneanother.280,000uFoftotalcapacitanceprovide
effectivefilteringofall ACripple.
Theseattributesresultinanamplifierofsuchextremelinearityandbandwidththatnooverall
feedbackcorrectionisrequiredorused.Oneadvantageofthisisahighdegreeofimmunity
frominteractionswithloadsorcablesandasuperiortransientresponse. Anextremelylow
nonreactiveoutputimpedanceismaintainedwellbeyond20,000Hz.theresultinguniform
dampingfactorisnotcommonlyfoundinotherdesigns.
Thechassisofthe61.0isconstructedofmachinedaluminummilledtoveryclosetolerances
yieldingtheseamlessappearancecharacteristicofpreviousproductsfromCoda. Aswithall
high-poweramplifiers,heatdissipationisimportant. The61.0usessixmassivealuminum
heatsinkswithoutfansforefficient,noiselessandcleanthermalrelief. Thethermalcoefficient
ofthe61.0heatsinksisoneofthelowestandmosteffectiveintheaudioindustry.
7
DESIGNPHILOSOPHY
II.MaterialQuality
Theamplifier’schassisismadefrommachinedaluminum. Allexteriormetalpartsare
anodizedorpowdercoatedfordurability.
Printedcircuitboardsarefiberglassepoxywithgoldplatingoveratin/nickelbarrier. Thegold
layerwillnotcorrode,whilethebarrierlayerpreventsthegoldfrommigratingtothelower
copperlayer.
Allresistorsareprecisionmetalfilm;1%tolerancefor1/4-wattand5%tolerancefor1-watt.
Capacitorshavebeeneliminatedwhereverpossible.Noelectrolyticcapacitorsareused
exceptinthepowersupply,whereseveralhigh-capacitanceelectrolyticsprovideoutstanding
filteringofthesupplyoutput.
Allsemiconductordevicesareofveryhighgrade.Voltagegainisaccomplishedwithan
extremelyhigh-quality,matcheddualFET,chosenforit’sexceptionallylownoise
characteristics.
Allaudioinputandoutputconnectorcontactsaregold-plated,andXLRreceptaclesare
manufacturedbyNeutrikofSwitzerland.Wireisusedaslittleaspossibleinthesignalpath-
onlytoconnecttheRCA jacksandspeakerterminalstothecircuitboard-andwhatisusedis
141-strandsilver-platedcopperwithsiliconeinsulation.
8
TECHNICAL DATA
BRIDGEDMONO
RatedPower 1000Wattsclass AB@4Ohms
500Wattsclass AB@8Ohms
FrequencyResponse: DCto-3dB@100kHz
Distortion: <.02percentfrom10Hzto20kHz@ratedpower
Gain: 32dB
MaximumCurrent: >100 Amperespeak
Noise: -126dBreferencetoratedoutput
InputImpedance: N/A unbalanced/10kOhmsbalanced
OutputImpedance: .06Ohmsfrom20Hzto20kHz
POWERSUPPLY
Transformer Type: Multi-tap,multi-windingtoroidal
TransformerRating: 3kVA
PowerFiltering: 280,000 μF
DIMENSIONS
Height: 7”Faceplate,7.75”Overall
Width: 18”Overall
Depth: 19”Overall
Weight: 110lbs.,115lbs.Shipping
PowerRequirement: 1.5KWattsmaximumatratedpower
9
CARE&HANDLING
Theinterioroftheunitrequiresnospecialcare.Ifitbecomesnecessarytocleantheexterior,
asimpledustingmaybeallthatisrequired.Ifacleanerisnecessary,anydilutecommercial
ammoniabasedproductwillbeappropriate.NEVERuseanyabrasiverags,cleanersor
chemicalsolventsonCodaproducts.
Whenhandlingtheunit,takecarenottomarthealuminum. Aluminumisamediumhardness
metalandcanbescratchedbythehardertoolsteels.
Avoidexposingtheunittodirectsunlight,andkeepitawayfromsourcesofintenseheat.
Donotthrowawaythecartonorassociatedpackingmaterial. Theyareidealifyouneedto
packtheunitformovingandintheunlikelyeventthatservicingisneeded,theywillbe
necessaryforsafeshipment.
Besuretoprovideadequateinsurancewhenshipping.
10
WARRANTY &DISCLAIMER
I.Warranty- Anyfailureofthe Amplifier61.0,hereafterknownastheproductororiginal
product,tooperateortomeetspecifications,applicableattimeofmanufacture,duetoa
manufacturingdefectorcomponentfailure,willbecorrectedbyCoda Technologieswithout
chargeforpartsorlabor,foraperiodoftenyearsfromdateoforiginalpurchase.Coda
Technologieswillprovideforsurfacetransportationtoandfromthefactoryforaperiodofone
yearfromdateoforiginalpurchase.
II.Procedure-IftheproductshouldrequireserviceunderwarrantycontactCoda
Technologiesatthelocationonthebackcoverofthismanualforshippinginstructions.
ProductspurchasedoutsideoftheUnitedStateswillbecoveredbythewarrantyconditions
extendedbytheimportingdistributorwhichmaydifferfromthosegivenabove.
III.ExclusionofCoverage-Coda Technologiesisnotobligatedtoservicetheproductin
certainconditions,asaccordingtothefollowingsubsections.
a. Theproducthasbeendamagedthrough:
i.operationnotinaccordancewiththeinstructionsinthismanual
ii.abuse,tampering,modificationoraccident
iii.serialnumberdefacement
b. Theproducthasbeentransferredtoathirdparty.Inthiscasethewarrantyis
fiveyearsfromdateofmanufactureasindicatedbytheserialnumber.
c. TheproducthasbeentransportedoutsideoftheUnitedStatesof America.
IntheseconditionsanyservicewillbemadeatCoda Technologiessoleoption.
IV. TotalLossandReplacement-Iftheproductissubmittedforserviceduetoasevere
malfunctionwhichhascauseddamagesufficientenoughtomakearepairattemptinfeasible,
theproductwillbereplacedwithanotherunitofequalorsuperiorspecifications.Coda
Technologiesproductlineisfrequentlyupdatedandchanged,andthespecificmodeland
versionoftheoriginalproductmaybediscontinuedatanytimewithoutnotice.Inthiscaseno
guaranteesaremadethatthereplacementunitwillbevisuallysimilartotheoriginalproduct.
V.SubjectiveDifferences-Noguaranteeismadethattheproductwillperformtoany
specificationsthatcannotbemeasuredandconfirmedwithprecisionaudioanalysis
equipment.Coda Technologiesisonlyobligatedtomakerepairswhichwillbringtheproduct
intocompliancewiththespecificationsstatedinthismanual.
VI.UnnecessaryService-Inallconditions,iftheproductissubmittedforserviceandfound
tobeoperatedwithoutfaultandwithinspecifications,shippingchargeswillbebilledtothe
customer.
Thiswarrantygivesyouspecificlegalrights. Youmayhaveotherrightswhichvaryfromstate
tostate.
Disclaimer-Coda Technologiescannotbeheldresponsibleforanydamagecausedbytheir
products,includingbutnotlimitedto:
a.DamagetospeakerscausedbyfailureofaCoda Technologiesproducttomute
ordisableitselfasexpectedordescribedinitsmanual.
b.DamagecausedbyconnectingaloadtoaCoda Technologiesproducthaving
animproperimpedanceasdescribedintheproductsmanual.
c.Damagecausedbydefectsindesign,constructionorcomponentquality.
11
WARRANTY REGISTRATION
FillinthisregistrationsheetandfaxormailittoCoda Technologiestoensureyouareinour
warrantysystem. Thiswillfacilitatewarrantyserviceshoulditbecomenecessary.
Itisrecommendedthatyouretainacopyofthisformforyourownrecords.Coda
Technologies’addressandfaxnumberarelocatedonthebackofthismanual.
MODEL DESIGNATION:
SERIAL NUMBER:
DATEOFPURCHASE:
PLACEOFPURCHASE
OWNERINFORMATION
NOTES:
Name:
Address:
City: State: Zip:
Phone:
Name:
Address:
City: State: Zip:
Phone:
7850CUCAMONGA AVENUE#34
SACRAMENTO,CA 95826USA
Phone
Onthewebat
emailusat
+01916.383.3653
CODA.CC
[email protected]
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Coda 61 Mono Amplifier User manual

Coda
Brand
Coda
Model
61 Mono Amplifier
Category
Audio amplifiers
Type
User manual
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