Wisdom AUDIO SYSTEM CONTROLLER SC-1 - Using Single-Ended Amplifiers

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http://www.markertek.com/Connectors-Adapters/Audio-Adapters/XLR-to-
RCA-Adapters/Switchcraft-Corporation/322X.xhtml
3 7 Channel Low (Woofer) Output
Thesesevenbalancedaudiooutputscarrytheroom-corrected“lowpass”
portionoftheaudiospectrum,andmustbeconnectedtotheampliers
thatdrivethewoofersectionsoftheloudspeakers.
ThepinassignmentsofthisXLR-typemaleoutputconnectorare:
21
3
 Pin1:Chassisground
 Pin2:Signal+(non-inverting)
 Pin3:Signal–(inverting)
 Connectorgroundlug:chassisground
Thesepinassignmentsareconsistentwiththestandardsadoptedbythe
AudioEngineeringSociety,andareusedwiththepurpose-designedSA-
seriespowerampliersfromWisdomAudio.Ifyouelecttouseadifferent
amplierforyourwoofers,pleaserefertotheoperatingmanualofyour
powerampliertoverifythatthepinassignmentsofitsinputconnectors
correspondtoyourWisdomAudioSC-1.Ifnot,wirethecablessothatthe
appropriateoutputpinconnectstotheequivalentinputpin,inorderto
preservethepolarityofthemusicalsignal.
Using single-ended ampliers Ifyourpoweramplierdoesnothavebalancedinputs,theadapterused
toconvertfrombalancedtosingle-endedmust“oat”Pin3(theinverted
signal).Thiscaneasilybecheckedwithanohmmeter:theimpedancebe-
tweenPin3andeitherthecenterpinortheshieldskirtontheRCAshould
beinnite.TyingtheoutputofPin3toground(assomeadaptersdo)will
compromisetheperformanceoftheSC-1.Shouldyouneedthem,prop-
erlywiredadaptersareavailablefromWisdomAudioforanadditional
charge,ortheycanbepurchasedonlineat
http://www.markertek.com/Connectors-Adapters/Audio-Adapters/XLR-to-
RCA-Adapters/Switchcraft-Corporation/322X.xhtml.
4 3 Channel Subwoofer Output
Thesethreebalancedaudiooutputscarrytheroom-correctedsub-
wooferoutputs,andmustbeconnectedtotheampliersthatdrivethe
subwoofer(s)inthesystem.
ThepinassignmentsofthisXLR-typemaleoutputconnectorare:
21
3
 Pin1:Chassisground
 Pin2:Signal+(non-inverting)
 Pin3:Signal–(inverting)
 Connectorgroundlug:chassisground
Thesepinassignmentsareconsistentwiththestandardsadoptedbythe
AudioEngineeringSociety.Refertotheoperatingmanualofyourpower
ampliertoverifythatthepinassignmentsofitsinputconnectorscor-
respondtoyourWisdomAudioSC-1.Ifnot,wirethecablessothatthe
appropriateoutputpinconnectstotheequivalentinputpin,inorderto
preservethepolarityofthemusicalsignal.