TroubleshootingGuide
UltraSubwoofersareexpertlydesignedandbuilttoprovideyearsoftrouble‐freeperformance.Mostproblemsthatoccur
canusuallybesolvedbycheckingyoursetupormakingsurethattheaudioandvideocomponentsconnectedtotheamplifier
areonandfullyoperational.
Thefollowinginformationwillhelpyoudealwithothercommonsetupproblemsyoumayexperienceduringnormaluseof
yourunit.Ifproblemspersist,contactEmotivasupportforhelp.
NoSound(fromoneormorespeakersconnectedtotheamplifier)
• Theconnectionbetweenthesubwooferandpreamplifier/processormayhavecomeundone.Turnoffyoursystem
andcheckthecables.
• Damagedaudiocable.
• ApreamplifierMuteswitchmaybeon,anexternalprocessorlooporatapemonitorloopisengaged.
• Checkmainpowerswitchtomakesurethatitisinonposition(1).
• Aninternalfuseontheunitmayhaveblown.ContactEmotivaSupportforassistance.
Turn‐onandTurn‐offThumps
• PlugtheUltraSubwooferintoadifferent115VACoutletthantheamplifierpoweringyoursystemspeakerssothere
isnopowerturnonconflicts.
• Installaline‐conditioningdevice.
“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.Makesurethattheyaredisconnectedwheretheyfirst
entertheroom,sotheyaremakingnoconnectiontothepreamplifierortheTV,oranyothercomponent.Ifthehum
iscausedbythecableTVline,thenyouwillneeda“groundloopisolator.”Thisisaninexpensivedeviceplacedin
linewiththecoaxialcablefeed.ContactyourCableCompanyorEmotivaforassistance.
• DisconnectallconnectionsfromthepreamplifiertoyourTV,VCRorDVD.
• Asatest,disconnectanyothercomponent,whichhasagroundedpowercord.
NOTE:Neverremovethegroundpinfromanypowercords(ifpresent).Thisisverydangerous.
Ifthehumpersists,disconnectallthesourcecomponentsoneatatimefromthebackofthepreamplifier,untilyouidentify
theproblem.
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