Detailed instructions for use are in the User's Guide.
[. . . ] CI912012-ChannelPowerAmplifier
· 12x80WContinuousPower(6ohms), allchannelsdriven simultaneously · Multi-channelpowerampforcustominstallation · Flex-Padallowseasysystemconfiguration · Autologicturnoncircuit · Outputmanagementcircuit(OMC)ensuresreliability · Individualinputlevelcontrols · EIArackmountkitincluded · Quietlow-pressurecoolingsystem
loadsattachedtotheamplifierfromheatingupexcessively, an importantfactorwhentheliabilityofaninstalledsystemisa consideration. WhentheOMCdetectsapotentialfaultsituation andbeginstolimitcurrentflow, anambercolouredLED illuminatesonthefrontpaneltoalerttheinstallertoaproblem inthesystem. WhentheOMCisactivated, theamplifierwill continuetoplaywithoutdistortion, butthepowerlevelwillbe reducedtotheamplifierchannelthathastheproblem. [. . . ] Flexibility TheidealCustomInstallationamplifiernotonlyhastohave absolutereliabilityandgreatsoundquality, butitalsomust beflexibleenoughtointerfacecorrectlywithavarietyofother devices, andoftendiversesystemrequirements. NANhas developedtwouniquefeaturesthatendowtheCI9120with exceptionalflexibility. Flex-Pad TheFlex-PadallowstheCI9120todrivefrom1to12 independentzones, inanyconfigurationofstereoormono(orin mixedcombination), withoutresortingtotheconfusion, sonic
TheNADCI9120isaclean-sheetdesign12 channelamplifierspecificallyengineeredtomeetthe demandingrequirementsoftheadvancedcustom installationmarket. Theresultofthisintensive designeffortisanamplifierthatsetsnewstandards for"bullet-proof"reliabilityandsonicperformancein thisspecializedcategory. Power Manoftheamplifiersdesignedformulti-zone distributedaudioarejustnotpowerfulenough. TheCI9120at80WattsContinuouspowerper channel, boastsnearlydoublethepowerofmost othercompetingamplifiers. Thisisverycritical, becauseunlikeanormalhi-fiamplifierthatonlyhas tosenditssignaltospeakersacrossroom, custom installationsoftendemandthatthesignalbesent fromoneendofthehometotheother. Theseries resistanceoflongrunsofspeakerwirecombined withimpedance-matchedvolumecontrolscancreate specialdemandsonanamplifierthattheCI9120 hasbeendesignedtoovercome. OMC NAD'sproprietaryOutputManagementCircuit (OMC)ensuresthatthefullpowerisavailableatany reasonableloadimpedance. Iftheloadimpedance fallsbelow3ohms, indicatingsomethingotherthan aloudspeakerisconnectedtotheamplifierchannel, theOMCwilllimitthepowerflowandpreventthe amplifierfromoverdrivingoroverheating. Thisis notonlyprotectstheamplifier, butitalsoprevents
degradation, andquestionablereliabilityofswitches. Instead, the Flex-Padusesthetriedandtruepatch-bayconcepttoconfigurethe amplifierchannels. Theconfigurationisvisuallyobvious, makingiteasier fortechnicianstosetupthesystemandtotroubleshootforsystemerrors. Thesuppliedpatchcablescanbeeasilyreconfiguredorreplaced. This canbeespeciallyimportantandcangreatlysimplifyfutureservicecalls yearsdowntheroad(especiallyifsystemdocumentationismissingor incomplete). [. . . ] ThisismanagedbytheAutomatedTurn-OnLogic(ATOLogic)circuitthat requirestheamplifiertobeswitchedbacktostandbyinthesamemanner bywhichitwasactivated. Inotherwords, ifitisswitchedonviaa12V controlsignal, itcannotbeswitchedtostandbyviathefront-panelswitch, itmustwaitforthe12Vsignal.
Summary Highpower, bullet-proofreliability, absoluteprotectionandsafety, combinedwithflexibilityandNADsoundqualitymaketheCI9120 uniqueintheworldofcustominstallation. Verysmallphysicalsizeand thestandardrackmountkit(3U)arejusticingonthecake(TheCI9120's littlebrother, the6channelCI9060isthesamephysicalsize, makingthe futureexpansioneasy). Individualleveltrimsforeachchannelhelpmake installationfasterandeasier. Thisisanewkindofamplifierthatbrings NAD'scorevaluesofperformance, value, andsimplicitytothecustom installationmarketplace.
SPECIFICATIONS Continuous Power, 20Hz-20kHz, all channels driven simultaneously at 4/6 Total Harmonic Distortion 20Hz-20kHz at rated power Clipping Power (0. 1% THD) IHF dynamic power at 6 IHF dynamic power at 4 IM Distortion (SMPTE 60Hz+7kHz) IM Distortion (CCIR 19kHz+20kHz) Damping factor (6, 20Hz-20kHz) 90W 85W 90W >0. 08% >0. 08% 31 0. 03% 12 x 80W
Input impedance Input sensitivity Voltage gain Frequency response -3dB at: 75W Signal/noise ratio; ref 1W Physical Specifications Dimensions (W x H x D) Net Weight Shipping Weight
25k 1. 1 volts for 8W/6 28dB 5Hz to 45kHz 89dB
17 3/16 x 5 1/4 x 17 3/4" (435 x 133 x 450 mm) 80 lbs (36. 5kg) 90 lbs (41kg)
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