BackPanelLayouts
UPA‐1BackPanel
1.StatusLedSelector‐StatusLEDscanbeturnedonandoffwiththisselector.
2.RCA/UnbalancedAudioInput‐StandardRCAinputconnectionthatconnectstoastandardRCAaudiooutputconnection
onapreamplifier,receiverormulti‐channelprocessor.
3.Unbalanced/BalancedInputSelector–Whenturnedtowards‘Un‐Bal’,theRCA(unbalanced)inputischosenandactive.
Whenturnedtowards‘Bal’,theXLR/Balancedinputischosenandactive.
4.XLR/BalancedAudioInput‐StandardXLRinputconnectionthatconnectstoastandardXLRaudiooutputconnectionon
apreamplifier,receiverormulti‐channelprocessor.
5‐6:SpeakerTerminals‐These5waybindingpostsacceptstrippedspeakerwire,bananaplugs,orspadeconnectors.Be
suretoobservecorrectpolaritywhenconnectingspeakersandbesurethatthewiresdonottouchbetweenpositiveand
negativeterminals.
WhenusingtheUPA‐1to‘bi‐wire’aspeaker,usebothnegativeandbothpositiveterminalstoconnecttothecorresponding
negativeandpositiveterminalsonyourspeakers.Inastandardwiringsituation,useonlyonenegativeterminalandone
positiveterminaltosinglenegativeandpositiveterminalsonthespeaker.
Note:Potentiallylethalvoltagespresent!Neverconnect,disconnectormodifyspeakerwiringwiththeamplifierturned
on.
7.VoltageIndicator–AllEmoitvaamplifiersoperateoneither115Vor230V.Thevoltageisdetectedwhentheamplifieris
turnedon,andisidentifiedbytheindicatorlights.Therearenouseradjustments,theamplifierautomaticallyadjuststothe
voltage.
8.RemoteTriggerInput/Output–TheUPA‐1canberemotelytriggeredbyanotherdevice,andinturn,remotelytrigger
anotherdevice.Whenaremotetriggeroutputfromapreamplifier,processororotheraudiodeviceisconnectedtothe
triggerinputhere,theamplifierwillpowerupandshutdownalongwiththefirstdevice.Anotherdevice(CDplayer,
amplifier,etc)canbeaddedtothischainusingthetriggeroutput.
A3.5mm,5‐12voltmonoaudiocableisusedforbothinputsandoutputs.Ifbuildingyourowncable,centerispositiveand
outershieldisnegative.
9.MasterPowerSwitch‐Thisrockerswitchprovidesthemasterpowerfortheamplifier.AfteritisintheONposition,the
amplifiercanbeturnedonmanuallyfromthefrontpanelswitchorautomaticallywiththetriggerinputvia3.5mminputjack.
Undernormaluse,thisswitchshouldremainon,leavingtheamplifierinstandbyposition,andcomingtofullpowerwith
eitherthefrontpanel‘STANDBY’button,oractivationthroughtheremotetrigger.
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