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Coda CSiB Integrated Amplifier User manual

  • Hello! I've reviewed the user manual for the Coda Technologies Control Amplifier CSi Balanced. This manual provides detailed information about the device's operations, including its features such as the separate preamplifier section, modular design, and Class A operation. I'm ready to answer your questions about the amplifier, its installation, or technical specifications.
  • What is the purpose of the bias toggle on the front panel?
    What kind of power supply does the preamplifier section use?
    How do I replace a blown fuse in the unit?
TECHNICAL DESCRIPTION
WARRANTY
TECHNICAL DATA
OPERATION MANUAL
Control AmplifierCSiBalanced
1
3
7
6
2
SAFETY PRECAUTIONS
INTRODUCTION
INSTALLATION & USE
8
10
CARE&HANDLING
!
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.
!
2
INTRODUCTION
ThankyouforselectingCoda Technologiesandourprocessionlineofhighdefinition,high
valueaudiocomponents. TheControl AmplifierCSiBalancedisaprecisiondevice,designed
inanefforttoprovidethelistenerwithunmatchedsoundquality,design,andconstruction.
TheCSiBwillprovideyouwithmanyyearsoflisteningenjoyment.
TheControl AmplifierCSiBalancedisthelatestrefinementoftheControl AmplifierCSi,itself
asubstantiallyimprovedevolutionofthehighlyregardedUnisonUltra.Mostnotablearethe
stylingandindustrialdesignchanges,introducedwiththeCSi,bringingtheCSiBharmony
withtheCodaCserieslinestylingchangesintroducedin2006.
ThepreamplifierandamplifiersectionsremainvirtuallyunchangedfromtheUnisonUltra,
whilethepowersupplyandoutputstageshavebeenimprovedtoincreasepowerto400W
perchannel.
TheCSiBalsoincludesanextendedpreamplifiersectionincorporatinganewbalancedaudio
input. ThepreamplifierintheCSiBhasbeenfullymodularized,becomingaseperateunit
fromtheamplifieritselfandincreasingfutureextensibility.
Otherfunctional,optional,oroperationalchangesarenotedthroughoutthismanual.Inorder
tooperateyouramplifierproperlyandtorealizeallofthecapabilitiesoftheCSiB,we
recommendthatyoureadthisentiremanualcarefullytoinsuremaximumbenefitfromyour
audiosystem.
REARPANEL CONNECTIONS
Toprovideforadequateventilationyoushouldallowatleastsixinchesofunobstructedspace
aboveandacoupleofinchesoneachsideoftheamplifier.Becauseofitslargepower
supply,alocalmagneticfieldmaybecreatedandpickedupbyCDplayers,turntablesand
similarequipment.Forthisreasonyoushouldprovideatleastafootofspacebetweenthe
CSiBandthesecomponents.
A.INPUT SELECTOR
SignalinputsforDisc,Video, Auxand Aux2.
B.MONITOR
Signalinputsandoutputsforatapedeckorotherrecordingdevice.
C.PREAMPLIFIEROUTPUTS
Signaloutputsforanadditionaloutboardamplifier.
D.SUBWOOFEROUTPUTS
Variableoutputsforapoweredsubwooferwhichtrackthemastervolume.Independently
controlled.
E. AMPLIFIEROUTPUTS
Amplifiedoutputstoconnecttospeakers. Toensureidenticalspeakerphasingconnectboth
speakerswiththesamepolarity(positivetopositive,negativetonegative).
F.POWERSWITCH
Mainpowerswitch. Thispowerswitchisintendedonlyforcompleteshutdownwhile
connectinganddisconnectingcables. Therockerswitchmustbeinthe “ON”positionforthe
CSiBtooperate.Ratherthanswitchingofftheamplifierentirelywhenitisnotinuse,thebias
pushbuttononthefrontpanelshouldbeusedtotoggletheamplifiersbiasoffwhenitisin
standby.
G. ACLINEINPUT ANDFUSEHOLDER
110or220voltpowerinput,fusedasspecifiedontherearpanel. Toreplaceablownfuse,
insertasmallscrewdriverintotheslotnexttothefusedrawer,indicatedbyafuseicon,and
twisttoreleasethedrawer.Replacementfusesmustmatchtheoriginalfuseasspecifiedon
therearpanel.
3
INSTALLATION&USE
C&D B AEF G
G
FRONT PANEL CONNECTIONS
A.LEVEL ADJUST
Controlsthecurrently-selectedaudiolevelvisibleontheLEDdisplay.
B.MODE
Selectstheaudioleveltoadjust.Cyclesbetweenvolume,left/rightchannel
attenuation,andsubwooferlevel.
C.LEDDISPLAY
Displaysthecurrently-selectedaudiolevel.Levelisindicatedindecibels,with99being
maximumvolumeand00being100dBofattenuation.
D.LEVEL /INPUT INDICATORS
Indicateswhichaudiolevelisselectedforadjustment(right)orwhichaudioinputisselected
(left). ThethreeLEDsinthelevelindicatorindicateleftandrightchannelsandsubwoofer.
TheLEDindicatorforthemainvolumelevelislocatednexttotheMODEpushbutton.
E.BIAS
Togglestheamplifiersbias.Withthebiasofftheamplifierwillnotproduceanyaudio,
effectivelyoperatinginstandby.Inthismodetheamplifierwilldrawnegligiblecurrent,and
canbeleftonindefinitely.
F.SUBWOOFER
Toggles(mutes/unmutes)thesubwooferoutput.
G.MONITOR
Enablesthemonitorinput,overridingallotherinputs.
H.INPUT SELECTOR
Selectstheactiveaudioinput.CyclesthroughDisc,Video, Auxand Aux2.
4
INSTALLATION&USE
REMOTEOPERATION
TheCSiBcanbeoperatedbyremotecontrol. TheMX-450LearningRemote
isincludedwiththeamplifier.ForinstructionsonusingtheMX-450itselfsee
theonscreenmanualincludedintheremote.
5
INSTALLATION&USE
6
CARE ANDHANDLING
Theinterioroftheunitrequiresnospecialcare.Ifexternalcleaningbeyondsimpledusting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hardertoolsteels. Avoidexposingtheunittodirectsunlight,
andkeepitawayfromsourcesofintenseheat.
Itisrecommendedthatyoukeepthecartonandassociatedpackingmaterial. Theyareideal
ifyouneedtopacktheunitfortransportation.Ifserviceisrequiredtheywillbeabsolutely
necessaryforsafeshipment.
7
DESCRIPTION
TheremotecontrolledCodaControl AmpliferCSiBalancedisdesignedwiththoroughness
reservedonlyforthefinestpreamplifierandamplifiergainstages. Analyticaldesign
techniques,bothobjectiveandsubjective,wereappliedinanopen-mindedfashionwith
musicalperfectionasthegoal. TheCSiBfeaturesawiderangeofdesigntopologiesand
componentsportedfrombothbroadlineageandthemostrecentadvancesintheCoda
productsanddesigntopologies.
Unlikeotherintegratedamplifiers,theCSiBofferstrue “separates”performance. TheCSiBis,
internally,essentiallyaStereo Amplifier Tswithaseparatepreamplifiersectionbasedonthe
circuittopologyoftheCoda07xPreamplifier.
Onthefaceplate,thestraightforwardcontrolsanddisplayprovidecomprehensive
functionalitytotheuser. AllinputselectionshaveLEDstoshowwhentheyareinuse.Buttons
controlbothvolumeandbalance,withanLEDdisplaytoshowwhichchannelsarebeing
adjusted.GainiscontrolledbyahighperformanceBurr-BrownPGA2310analogattenuator.
Thisdigitallycontrolledanaloguedevicefeaturesanimprovedoutputbufferandincreased
voltageswingforhighlevelinputsignals.Digitallycontrolledleveltrackingallows1dBper
stepattenuationwithouterror. Thedigitallycontrolledsteppedresistors&zerocrossing
detectioncircuitallowfor “zipper-free”operation. Totalharmonicdistortionislessthan0.04%
withasignaltonoiseratioapproaching130dB.
Thepreamplifiersectionhasitsownseparatepowersupplywithmultipleindependent
transformertaps. A referencevoltageisdevelopedbydeliveringconstantcurrenttozener
diodes. Theresultingvoltageisheavilyfilteredanddeliveredthroughclass-A followersto
provideabsolutelystablepowertothepreamplifiersection. A separatepowersupplyis
providedforallcontrolsandmicroprocessorcontrolsystem.
IntheamplifiersectionoftheCSiB,differentialvoltagegainthroughoutprovidesexceptional
rejectionofexternalnoiseandcontributestotheinherentstabilityofthecircuit. Thefrontend
isdesignedtoprovideaslewrateof50V/uswithoutenteringclassBoperationasiscommon
inmanyotherdesigns. Thiscombinedwithexcellenthighfrequencydesigninsureslinear
operationathighspeed.
Theamplifer’soverbuiltpowersupplytakeaverydirectapproachtohighperformanceby
utilizingatopquality3.0kVA customtoroidaltransformer,highcurrentrectifersanda
80,000 FcapacitorfilterbankwithverylowESRandinductance.
Thislatestgenerationoutputstagedesigniscapableofproducingpeakcurrentsinexcessof
100peakampereswithadegreeoflinearityandspeedunmatchedbyotherdesigns
producingonlyafractionofthismassiveamountofcurrent. Thisisachievedbythe
implementationofseveraldistinctcircuitfeatures.Eachchanneluses20individualoutput
transistorswithacombinedpowerratingofover4,000wattsand125amperesanda
bandwidthof30MHz. TheCSiBV3operatesinClass A uptoapproximately~8watts. At
higheroutputlevels,thebiassectionisdesigned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.Withsuchlinearityand
bandwidth,only6dboffeedbackisusedtomaintaindampingfactorwhilepermittingthe
minimalvaluecustomemitterresistorstoprovidecurrentlimitingonlyunderextreme
conditionsthatwouldexceedtheoutputstageshighcurrentcapabilities.Oneadvantageof
thisisahighdegreeofimmunityfrominteractionswithcomplexspeakerloadsorcables.
μ
8
TECHNICAL DATA
RATINGS
RatedPower V3:
400watts@8Ω
800watts@4Ω
Class A to~8W@8Ω
V2:
250Watts@8Ω
500Watts@4Ω
Class A to~12W@8Ω
V1:
150Watts@8Ω
300Watts@4Ω
Class A to~18W@8Ω
MaximumCurrent 1 0 Amperespeak
Noise -1 0dBreferencedtoratedoutput
InputImpedance 50kΩunbalanced/1kbalanced
OutputImpedance .04Ωfrom20Hzto20kHz
POWERSUPPLY
Transformer Type Multi-tap,multi-windingtoroidal
80,000 μF
TransformerRating 3,000VA
45watts@Standby(biason)
DIMENSIONS
Height 5.5”Faceplate,6.0”Overall
17.0”Faceplate,16.75”Chassis
Depth 14”Overall
Weight 55lbs.
3
3
FrequencyResponse DCto-3dB@100kHz
Distortion <.04%from10Hzto20kHz@ 0Watts
Gain 26dB
PowerFiltering
PowerRequirement
Width
40
9
WARRANTY
I.Warranty- AnyfailureoftheControl AmplifierCSiBalanced,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ifanyof
thefollowingconditionsapply:
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.
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specifcautions.
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specif
cationsthatcannotbemeasuredandconformedwithprecisionaudioanalysisequipment.
Coda Technologiesisonlyobligatedtomakerepairswhichwillbringtheproductinto
compliancewiththespecifcations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specifcations,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.
Theproducthasbeentransferredtoathirdparty.Inthiscasethewarranty
Iisvalidfor5yearsfromdateofmanufactureasdeterminedfromtheserialnumber
10
WARRANTY
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
fax
+01916.383.3653 +01916.455.3653
CODA.CC
[email protected]
/