TroubleshootingGuide
UltraSubwoofersareexpertlydesignedandbuilttoprovideyearsoftroublefreeperformance.Mostproblemsthatoccur
canusuallybesolvedbycheckingyoursetupormakingsurethattheaudioandvideocomponentsconnectedtotheamplifier
areonandfullyoperational.
Thefollowinginformationwillhelpyoudealwithothercommonsetupproblemsyoumayexperienceduringnormaluseof
yourunit.Ifproblemspersist,contactEmotivasupportforhelp.
NoSound(fromoneormorespeakersconnectedtotheamplifier)
Theconnectionbetweenthesubwooferandpreamplifier/processormayhavecomeundone.Turnoffyoursystem
andcheckthecables.
Damagedaudiocable.
ApreamplifierMuteswitchmaybeon,anexternalprocessorlooporatapemonitorloopisengaged.
Checkmainpowerswitchtomakesurethatitisinonposition(1).
Aninternalfuseontheunitmayhaveblown.ContactEmotivaSupportforassistance.
TurnonandTurnoffThumps
PlugtheUltraSubwooferintoadifferent115VACoutletthantheamplierpoweringyoursystemspeakerssothere
isnopowerturnonconflicts.
Installalineconditioningdevice.
“Hum”Noises
Thisproblemismorethanlikelycausedbya“groundloop”inyoursystem,ratherthanafaultinthesubwoofer.
Followthesestepstoisolatethemaincauseofthehum;theremayevenbemorethanone.Remembertoturnoff
allcomponentsinyoursystembeforedisconnectingorconnectinganycablesduringtroubleshooting.
Trytohaveallofyourequipmentonthesameelectricaloutletorcircuit.Groupallthelowpowercomponents
(preamp,CDplayer,DVDetc.)onasingleoutletorpowerstrip.Thisisprovidedthattheoverallcurrentdrawfrom
yourequipmentdoesnotexceedtheratingoftheoutletorbreaker.
Disconnectallcables,whichcomefromoutsidetheroom,andcheckifthehumgoesaway.Thisincludessuch
connectionsascableTV,satelliteTV,orrooftopantennas.Makesurethattheyaredisconnectedwheretheyrst
entertheroom,sotheyaremakingnoconnectiontothepreamplifierortheTV,oranyothercomponent.Ifthehum
iscausedbythecableTVline,thenyouwillneeda“groundloopisolator.”Thisisaninexpensivedeviceplacedin
linewiththecoaxialcablefeed.ContactyourCableCompanyorEmotivaforassistance.
DisconnectallconnectionsfromthepreampliertoyourTV,VCRorDVD.
Asatest,disconnectanyothercomponent,whichhasagroundedpowercord.
NOTE:Neverremovethegroundpinfromanypowercords(ifpresent).Thisisverydangerous.
Ifthehumpersists,disconnectallthesourcecomponentsoneatatimefromthebackofthepreamplier,untilyouidentify
theproblem.
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