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PROEL DSO480 - Factory Presets; Warranty Information

PROEL DSO480
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39
Thegraphshowsthreedifferentlowpassfiltershapes.
Number1isastandard24dB/OctaveLinkwithRiley
curve.
Number2isa48dB/OctaveLinkwitzRiley.
Ascanbeseen,number2issignificantlysteeperinroll
offthannumber1,aswouldbeexpected.
However,number3isa12dB/OctaveButterworthf
ilter
withanEllipticalLowPassfilterfollowingit.This
producesacombinedrolloffveryclosetothatofthe48
dB/Octave(withthesideeffectoftheresponserising
againaftertheinitialdropfromthepassband).
Toproduceacrossoverfilterofthisshapeitissimplyacaseofse
ttingthelow(orhigh)passfilterforthat
outputtothedesiredcrossoverfrequency,andselectinga12dB Butterworthresponse:
OP1 Output 1 HPF /~~
250Hz Butterworth 12dB
Thenselectaparametricsectiononthesameoutput,andmodifyitsbehaviour(usingtheENTERkey)untilthe
correspondingHPFEllipticalfilterissele
cted.Settheturnoverfrequencyofthisfiltertobethesameasthatof
thecrossoverfilter.Makesureyouchoseahighpassellipticaltoworkwithahighpasscrossover,andlow
passellipticaltoworkwithalowpasscrossover.
InA Input A HPF:1/~~
250Hz HP Ellip
Factorypresets
DSO480isfactorypreloadedwithpresetsforthePROELloudspeakerlines.
Thepresetswereoptimisedbyengine ersatPROELtoachievethebestperformance.
AsageneralruleSatandAuxoutputsarenotlockedandcanbeprogrammedbyuserstofulfiltheirneeds.All
Auxoutputsaremutedbydefaul
t.
Outgainistrimableandthedelaytimeisunlockedorlinkedwithanotheroutput.Thedefaulttimealignment
wascalculatedinPROEL’sanechoicchambertakingintoaccountthemostcommonspeakerplacement
positions.
Note:AlwayscheckProelwebsitehttp://www.proelgroup.comforupdatesandsoftwaredownload.
Warranty
Thisproductiswarrantedagainstdefectsincomponentsandworkmanshiponly,foraperiodoftwoyears
fromthedateofshipmenttotheenduser.
Duringthewarrantyperiod, PROELwill,atitsdiscretion,eitherrepairorreplaceproductsthatprovetobe
defective,providedthattheproductisreturned,shi
ppingprepaid,toanauthorisedPROELservicefacility.
Defectscausedbyunauthorisedmodifications,misuse,negligence,actofGodoraccident,oranyuseofthis
productthatisnotinaccordancewiththeinstructionsprovidedbyPROEL,arenotcoveredbythiswarranty.
Thiswarrantyisexclusiveandnootherwarrantyisexpressedori
mplied.
PROELisnotliableforconsequentialdamages.
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