Operation Manual

6. Operation
VSXNET Subwoofer Operation Manual rev 2.0.0
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6.3 LED functions
OnswitchonalloftheLED’swillilluminateinstantaneously.ThersttogooffisthegreensignalLEDafterabout
1second.TheredlimitLEDwillashfor5-10seconds,thisistheunitperformingaselfdiagnostictest.During
thisinitialfewsecondstheaudioismuteduntiltheredLEDstopsashing&thebluepowerLEDistheonlyLED
leftilluminated.
Aftertheselfdiagnostictestisperformed,theunitisreadytopassaudio.Whenaudioisdetectedthegreen
signalLEDwillilluminate.IfatanytimetheRedLEDashesthisindicatesthattheDSPistakingcorrectiveaction
byapplyinglimitingtoeithertheLForHFchannels(orboth).RegularickeringoftheLimitLEDisperfectly
acceptable;donotallowthelimitLEDtostayonconstantlyforanysustainedlengthoftime(reducethegain).
FastregularashingoftheredLEDindicatesthattheDSPistakingprotectiveaction;theinputwillbeautomatically
attenuatedtoavoidoverdriving,ifthisoccurstheoperatorshouldreducetheinputgainfromthesource.Ifthegain
isnotreducedtheunitwilleventuallybeshutdownbytheDSP.
Theblue‘NetworkFind’LEDonthefrontofthecabinet(behindthegrill)canonlybeilluminatedbyactivation
fromwithinthesoftwareinterface.WhenactivatedtheLEDwillashintenselyasanaidtolocateandidentify
loudspeakersconnectedonthenetwork.TheredlimitLEDonthebackpanelalsodoublesasanetworknd
LEDduplicatingthefunctionofthebluefrontmountedLED.
6.4 Limiters
Thelimitersarecarefullyset-uptopreservetheloudspeakersdynamicheadroombyallowingshorttermtransients
topass;audibledegradationinsoundwillonlybecomeapparentwhenthelimitindicationisonconstantly.The
limitingfunctionswillprotecttheamplierfromlongtermoverheatingbyattenuatingthedrivingvoltagetothedrive
units.Ifusedirresponsibly(constanthardclipping)soundqualitywillbecompromised.Inextremecasesdriveunits
mayalsobedamaged.
6.5 Audio Connections
Thesignalinput&linkconnectorsarefullybalanced. SIGNAL XLR CONNECTOR
Whenconnectingabalancedsignalbesuretowire Hot(+)  Pin2
tothefollowingstandard:- Cold(-)  Pin3
 Shield(GND)  Pin1
Inastandardbalancedinterconnectiontherearetwosignalconductorsandashield.Theshieldisnormally
referencedtogroundatoneorbothends.Manytimestheshieldisliftedatoneend,usuallyattheinputto
eliminate“groundloops”ornoise.Theproblemwiththisapproachisthatwhileitmayreducehum,theshieldsact
asradioantennasandpickupradiofrequencyinterferencefromtheenvironment.
Multipleenclosuresmaybedrivenfromasingleaudiosource;simplyplugthesignalsourceoutputintotherst
XLRinputsocket,andpatchthatspeakersXLRlinktothenextspeakersXLRinputsocket&soon.