Specifications

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5. CROSSOVERADJUSTMENTS
5.1 SELECTINGTHEOPERATIONMODE
Youmustselectandsettheappropriateoperationmodebeforeyoucanattemptanyofthecross-
overfrequencyandgainadjustments.Thissettingdependsonthespeakersystemconnectedto
theamplifier.Selecttheappropriateoperationmodeasfollows:
➡SelectHIGHPASS,ifthespeakersystemisacomponent-,coaxial-ortriaxial-type.
➡SelectBANDPASSincaseofakickbasssystem,orasubwoofersystem.
Selectingtheappropriateoperatingmodeforeachchannelpairmakessure,thatthespeakers
connectedtotheamplifieroutputswillonlyreceivefilteredsignals,sothespeakerswillonlyhave
tooperateinthefrequencybandtheycanreproducebest.
Note:Ifyouownahead-unit,thatfeaturesanintegratedDSPcontrolledactivecrossover,itis
recommendedtousetheDSPbasedcrossoversoftheheadunit.Inthiscase,youhavetoset
theoperationmodeslideswitch(es)toFULL(range)!
5.2 HIGHPASSCROSSOVERFREQUENCYADJUSTMENT
Forsatellitespeakers,youalwaysselectthe“HPF”mode,tocutoffthebasscontentinthemusic
signal.Highpassfilteringwilltakeawayunnecessarymechanicalandelectrical‘strain’fromthe
connected coaxial or component speaker systems, as they cannot reproduce strong and low
basssignalsanyway.Dependingontheactualconesurface,voice-coildiameterandtherated
powerhandlingoftheinstalled‘satellite’speakers,itisrecommendedtosetthehigh-passcross-
overfrequencypointbetween50and150Hz,usingthe„HPF“potentiometer.
FRONTDOORSATELLITESPEAKERSYSTEM(„HPF”MODE) X-OVERFREQ.

13cm2-wayComponentSystem    80-110Hz
16cm2-or3-wayComponentSystem   50-80Hz
REARSATELLITESPEAKERSYSTEM(„HPF”MODE)  X-OVERFREQ.

13cm2-wayCoaxialorComponentSystem   100-120Hz*
16cm2-wayCoaxialorComponentSystem   100-120Hz*
15x23cm(6x9”)or18x25cm(7x10”)TriaxialSpeakerSystem 100-120Hz*
*Whenasubwooferispartoftheaudiosysteminstall.
5.3 LOWPASSCROSSOVERFREQUENCYADJUSTMENT
Select“BPF”,toactivatethelowpassfilteroftheintegratedelectroniccrossover.
Note:Beforeyouattempttoadjustthelowpasscrossoverfrequency,youmustsetthesubsonic
highpassfiltercontrol(when“BPF”modeisselected)toitslowestposition(10Hz).
Note:Forthe2-and4-channelamplifiermodels,thebandpass(“BPF”)modewillengagethe
HPFpotentiometerassubsonichighpass.
TheLOWPASScut-offfrequencysettingdependsonsomevariables,andeachvehicleisdiffer-
ent!Asaruleofthumb,settingsinarangebetween60to90Hzwillrenderbestsonicresults.
Thissettingismostlyamatteroftaste,andshouldthereforebe‘playedbyear’.
NOTE:Ingeneral,settingthelowpasscrossoverfrequencytoolow,willresultinaweakand
muddysoundingbass,whilesettingthiscrossoverfrequencytoohighwillresultina‘booming’
basssoundandreducedlowendextension.
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