Specifications
18
5.4 SUBSONICHIGHPASSCROSSOVERFREQUENCYADJUSTMENT
When driving a subwoofer in bandpass (“BPF”) operation mode, you should also adjust the
subsonic highpass frequency.This isdone by adjusting the “HPF” potentiometer.Thissetting
depends the size and the power handling of the installed subwoofer system. The higher the
subsoniccrossoverfrequencyisset,thehigherthemechanicalpowerhandlingoftheconnected
subwoofersystemwillbe.Thetrade-offisreducedlowendextension!Thesubsonichighpass
cannotbebypassed,whentheoperationmodeissettoBPFmode,butyoucansettheHPF
potentiometerat10Hz,sothesubsonichighpassfilteringremainsinaudible.
5.5 INPUTGAINADJUSTMENT
To reach a maximum in dynamic response from each individual head-unit/amplifier/speaker
combination,itisimportanttosettherespectiveinputlevelcontrols(„GAIN“)ofallchannelpairs
correctly.Beforeyoustart,youMUSTsetalltonecontrols(Bass,Mid,Treble,Loudnessetc.)
andthefaderonthehead-unittotheirneutralorcenterpositions.
Nowturnallinputgaincontrolsoftheinstalledamplifiersanti-clockwisetotheirminimumposi-
tionsandstartwiththechannelpair,thatdrivesthesubwoofersystem.Thelowpasslevelremote
control-ifinstalledinyoursystemconfiguration-shouldbesettoapproximately3/4open,so
thereisenoughheadroomtoturnupthebassvolumelateron.
➡SUBWOOFERCHANNEL
Set the volume control of your head-unit to approximately 3/4 of full volume, while playing a
dynamicpieceofmusic.Slowlyincreasetheinputgaincontrolofthechannelpair,thatdrives
thesubwoofer(s),byturningtheGAINcontrolclockwiseuntilyoucanjustaboutheardistorted
soundscomingoutofyoursubwoofersystem.Reducethemainvolumelevelonyourhead-unit
toamediumlisteninglevel.
➡SATELLITECHANNELS
Slowly increase the input gaincontrol of the channel pair, that drives the satellitesystem, by
turning the GAIN potentiometer clockwise, until you reach a good tonal balance with a slight
emphasisinthebassregion.Aimatafullbodiedbassresponse.Nowslowlyturnuptheinput
GAIN control of the remaining channel pair(s) -if any- untilyou reach agood tonalbalance
betweenfrontandrearsatellites.
➡FINETUNINGOFALLCROSSOVERFREQUENCYPOINTSETTINGS
Finallyyoucanattempttofine-tunethehigh-passandband-passcrossoverfrequenciesonyour
amplifier,toobtainthebestsoundqualityofallloudspeakersconnectedtoyourcaraudiosystem.