Specifications

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1)Signalledleftchannel,thisledlightsupgreenwhenasufcientlystrongsignalispresenton
the left channel, after passing the input level control. When it lights up red, the power amp is
overheatedorinprotectmodeandisshutdown.Turnoffthepower.The amplier will not
turn on automatically after an error condition, the user MUST turn off power, wait for
cooling down in case of overtemperature, or remove the overload and then power on
again!
2)APCactivityledleftchannel:thisledlightsupwhentheAPCcircuitryisactive.TheAPC
circuitry reduces the gain at the inputs to guarantee the full dynamic range of the power
ampliercircuits.
3)Clipledleftchannel:thisledlightsupwhenevertheamplierclips.Thisisawarningsign:you
arepushingthingsalittletoofaroroverloadingtheamp(minimumloadimpedanceis4ohms
in2channelmodeor8ohmsinbridgemode).ReducetheinputlevelbyafewdBsothatthis
led never lights up anymore ! Don’t ignore this !
4)Templedleftchannel:thisledlightsupwhentheamplierisabouttooverheat.Outputpower
willautomaticallybelimitedbytheAPCcircuitrytoavoidfurtheroverheating.Thispartof
the protection circuit resets itself automatically when temperature has normalized. Caution:
turning off the APC circuit (rear switch ‘15’) will also turn off this protection feature and
will void warranty.
Whenbothsignalled(1)andtempled(4)arered,itispossiblethatthepowertransformer’s
thermalprotectionisactiveandtheamplierisshutdown.Turnoffthepowerandletitcool
down.Theamplierwillnotturnonautomaticallyafterithascooleddown,theuserMUSTturn
off power, wait for cooling down and then power on again !
5)Powerswitchandpowerled:iptheswitchtopowerontheamplier.Theledwilllightupto
indicate that mains power is present.
3. Inputs and outputs
Frontpanellayout:
1 2 3 4 6 7 8 95