Yorkville Sound CA1 Stereo Amplifier User Manual


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notexposedtodirectsunlightordirectradiationorreectionfromanyheatsource.
Installingtheloudspeakersystemschoosealocationthatgetsnotaffectedbyex-
tremeand/orconstantvibrationorothermechanicaloscillation.Alsomakesurethat
thespeakersareinstalledatlocationsthatarefreefromdustand/ormoisture.
CAUTION
Westronglyrecommendthatyouleavetheconnectionoftheappliancetothequalied
andexperiencedservicetechnicalwhoisspecializedinconnectingelectricalandelectroni-
callyequipment.Donottaketheriskofelectro-shockorshockhazard.Toreducetheriskof
electro-shockallconnectionshavetobeaccomplishedbeforeitispermissibletoconnect
theampliertothemainsupply.Beforeconnectingtheappliancetothemainssupply,once
againmakecertainthatallconnectionsarecarriedoutcorrectlyandthatnoshort-circuits
exist.Theoverallsoundreinforcementinstallationhastobeinaccordancetothelawsregu-
lations,standardsandguidelinesthatarerelevantandapplicableinthecountrywherethe
equipmentisgoingtobeoperated.
AC POWER SUPPLY
CAUTION
BeforeusingtheamplierforthersttimemakesurethattheapplianceISsetinac-
cordancetoyourmainssupply.Otherwise,pleaseconsultyourYorkvilledealerwho
willcongureyourequipmentforthecorrectvoltage.Connecttheamplieronlyto
groundedmainsoutlets.Connectingtheampliertothemainssupply(115Vacre-
spectively230Vac)hastobeaccomplishedbyinsertingthesuppliedmainscordinto
thecorrespondingsocket(15)andafterwardpluggingitintoamainsoutlet.
DC POWER SUPPLY
CAUTION
A24VDCpowersource(ie.abattery)hastobeconnectedtotheterminals(18)that
arecoveredbytheprotectivelid.Toreducetheriskofdroppingvoltagetoaminimum
andtoeliminatethedangerofdamagingthebatterycablesbythermaloverload,
thesecableshavetobeatleast2.5mm
2
indiameter,each.Switchingtheamplieron
oroffisperformedthroughthepowerswitch(33).
CONNECTING THE OUTPUT TERMINALS
CAUTION
Toavoidtheriskofelectricalshock,never touchthebareconductorsleadingtothe
outputterminalsoftheamplierwhenitisinoperation.Undergures,showthepos-
sibleconnectionsoftheeOUTPUTspeakerterminalsaccessiblebyremovingthe
protectivecover.Bearinmindthefollowingrules:
Constant Impedance Lines
•Thetotalimpedanceofthespeakersconnectedmust correspond to that selected
on amplifier’s output terminals.
•Thesumofthepowercapacitiesofthespeakersmustbenolowerthantheamplier’s
powercapacity.
•Thelengthoftheconnectingcablesmustbeaspossible;inanycase,thelongerthe
distancetobecoveredandthegreatermustbethecross-sectionofthecables.
Constant voltage lines
•Eachspeakermustbeequippedwithalinetransformerwithaninputvoltageequal
tothatoftheline(25,70,100V).
•Thesumofthepowercapacitiesofthespeakersmustnot exceed the output
power capacity of the amplifier (i.e. total wattage of speakers installed in zones
1 through 4).
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