Kilpatrick Audio K6501 PHILTER User manual

K6501PHILTER
UserManual
DownloadaPDFversionofthemanualhere:K6501-philter-manual.pdf
NotethatPDFmanualsareautomaticallygeneratedfromwebpages.Linksandembeddedmediawillnotbeaccessible.Forthefullexperiencevisit
ourwebsite:www.kilpatrickaudio.com
Introduction
TheamazingsuccessofthePHENOLPatchableAnalogSynthesizerhasdefinitelycreatedademandforsomeofthePHENOLaspectsintheEurorack
world.BypopulardemandwehavereleasedtheK6501PHILTERwhichisbasedcloselyonthefiltersfoundinPHENOL.
Setup
TheK6501PHILTERrequiresonly+12Vand-12V.Makesureyouuseagoodpowersupplythatisnotoverloaded.Thevoltagesshouldmeasureas
closeto+12Vand-12Vaspossible.
Togetsomethinghappeningrightaway,justpatchanoscillatorsignalintotheSIGINjackandtaketheoutputfromtheLPOUTjack.Varythe
CUTOFFcontrolandcheckoutthesound.
JacksandControls
AudioInputsandOutputs
TheSIGINjackistheaudioinputforthemodule.Thisacceptsa+/-5V(10Vpeaktopeak)signal.Notethatwithhighresonancetheoutputsmay
produceupto+/-10V.PHILTERcanproducethreeoutputsatthesametime:
LPOUT-Low-passoutput-soundsatandbelowthecutofffrequency
BPOUT-Band-passoutput-soundscentredaroundthecutofffrequency
HPOUT-High-passoutput-soundsatorabovethecutofffrequency
EachaudiooutputjackhasanLEDwhichwilllightwhenstrongsignalsarecomingoutofthejack.
Tuning
TheCUTOFFcontrolaffectstheresonantfrequencyofthefilter.Whenresonating,thecutofffrequencysettingwilldeterminewhichsoundsare
accentuated.Beyondthisfrequencytheothersignalswilleitherbepassedunchanged,orrolledoffdependingonwhichoutputyouuse.
TheFMINjackandFMLEVELcontrolareusedtocontrolthecutofffrequencyfromacontrolvoltage.TheFMINjackrespondsexponentiallyto
controlvoltagesfromapprox.-5Vto+5V.NegativeandpositivevoltageswilladdorsubtractfromthefrontpanelCUTOFFcontrolsetting
accordingly.

Resonance
TheRESONANCEcontrolaffectshowmuchsignalsaroundthecutofffrequencywillbeaccentuated.PHILTERisintentionallydesignnottoself-
oscillate,sincefilterarenotreallyasgoodasoscillatorsinthisregard.Instead,abuilt-inresonancelimitercircuitallowsveryhighresonance
settingswithoutoscillation.Thisproducesverystrongand"fat"soundseventhoughPHILTERisasimpletwo-poledesign.Thisiswhatmakes
PHILTERsoundsopunchyandmusical!
AudioandControlVoltages
KilpatrickAudiostrivestomakeproductswiththemostconvenientanduniversalvoltagestandardspossible.Webelieveintheapproachthat
everythingshouldbeabletopatchintoeverythingandthereforeallourmodulesarebasedaroundthemostuniversal-5Vto+5Vrange.Pulsesand
gatesare0Voff/+5Von.Pitchvoltagesrangefrom-5Vto+5Vandusethestandardized1voltperoctavescaling.Audio,LFOandenvelope
voltagesalsorangefrom-5Vto+5V.Thisgivestheabsolutebestcompatibilitybetweendifferentmoduletypes.Ournon-Eurorackproductsalso
followthissamesystem.
WheneveryouseeanoffsetcontrolononeofourmodulesthatismixedwithaCVinput,thereisaneasywaytopicturehowitworks.Simply
imaginetheoffsetcontrolsettingthevalueoftheparticularfunctionwithnoinputsignal.(ora0Vinputsignal)PuttingaCVsignalintothe
correspondinginputjackwillsimplyaddorsubtractfromthisoffsetsetting.Someinputshaveattenuatorcontrols(wecallthemLEVEL)thatallow
youtoscaletheinputsignal.Thissimplyscalesdowntheinputsignalbeforeitcanaffecttheinternalcircuitry.
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Feelfreetocontactusformoreinformation,toreporterrorsorunclearsections,ortorequestspecificinformationbeaddedtothismanual.