Emotiva 10, 12 UsingLowPassFiltersandSettingtheCrossoverFrequency, SettingthePhaseControl

UsingLowPassFiltersandSettingtheCrossoverFrequency
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Note:Ifyourpreamp/processorhasitsownLowPassFilter/Crossoversettings,itisrecommendedthatyouusethemto
controlthecrossoverfrequencyonyoursubwoofer.TurntheLowPassFilterswitchto‘BYPASS’(page10,point3).This
disengagesalllowpass/crossovercontrolsonthesubwoofer.Ifyourpreamplifier/processordoesnothaveLowPass
Filter/Crossovercontrols,usethecontrolsonthesubwoofer.
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TousetheUltraSubwooferLowPassFilterandCrossoverControls,connectthesubwoofertoyourmulti‐channelorstereo
system(withallotherspeakersconnectedtotheirrespectiveamplifiersandinworkingorder).TurnthesubwooferVolume
control(page10,point5)onthe‘MIN’(minimum)setting,thenbringthesubwoofertofullpower,andobservethefollowing
steps:
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1.TurntheLowPassFilterswitchto‘ON’
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2.SettheCrossoverFrequencyto150Hz,thehighestpoint.
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3.Withyourpreamplifier,processor,CDplayer,orothermediasource,selectandplayafamiliarpieceofmusic.
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4.Keepingthesubwoofervolumedown,raisethevolumeoftherestofthesystemspeakerstoalevelthatisrepresentative
ofyourusuallisteninghabits.
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5.UsingthesubwooferVolumecontrol,raisethelevelofthesubwooferuntilitsoundscorrecttoyou(‘correct’inthiscase
referstoyourpersonalpreference).
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6.BegintoslowlyadjusttheCrossovercontroltolowernumbers,takingtimetostepbackandlisten.
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Rememberthatthecrossoverfrequencydefineswhichfrequenciesarepassedthroughthesubwoofer,andwhicharenot.A
crossoversetto50Hzonlyallowsfrequenciesof50Hzorlowertopassthroughthesubwoofer.Thehigherthesetting,the
morefrequenciesareallowedtopassthrough.ThehighestsettingontheUltraSubwooferis150Hz,whichallowsall
frequenciesbeneath150Hztopassthrough.
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Asyoulisten,youarelookingforthemomentwhenthesubwooferseamlesslyintegrateswiththerestofyourspeaker
system.Thesubwoofershouldnotdrawattentiontoitself,butratherseemlikeanextensionofthespeakers,perfectly
blended.Smallersystemspeakerswhichproducearelativelysmallamountofbassfrequenciesmaybenefitfromahigher
crossoverfrequency,whilesystemspeakersthatproducemorebassfrequenciesmaypromptyoutochoosealower
crossoversetting.
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YouwillprobablymakeseveraladjustmentstoboththeCrossoverandVolumecontrolsbeforethesubwoofersounds
properlyintegratedwithyoursystem.Besuretotakeafewbreakstorestyourears,andtryseveralpiecesoffamiliarmusic.
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Remember,therearenorules.Youmayfavormoreorlessbassthansomeoneelse,andwhatsoundscorrecttoyoumaynot
soundcorrecttoothers.
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AdjustingthePhasecontrolmayrequirethatyougothroughthisprocessagainaftertheadjustment.Justbepatientand
you’llgetitright!
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SettingthePhaseControl
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Beginbysettingthecontrolto0,andstepbacktolisten.Doesthesubwooferdrawattentiontoitslocation,ratherthan
seemlikeanextensionoftheoverallsoundstage?Doesitseemsomewhatdisconnectedfromtherestofthespeakers?Ifso,
begintoturnthePhasecontrol,takingtimetostepbackandlisten,untilthe‘imaging’seemscorrect,andthesubwoofer
blendsintothesoundstageandsoundscorrecttoyou.
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