Manual

ShelvingEQ(HighShelfshown)
InAInputAHSF:1-<::
1k00HzQ=3.00.0dB
Remember–tochangefiltertypes,pressBYPASS
tobypassthefilter,andthenuseENTERtoselect
thefiltertype.
TheshelvingEQhasadjustablefrequency,'Q'(or
Bandwidth)andGaincontrols.Theseaffectarange
offrequenciesfromtheturnoverfreqencyasshown
inthegraph.Forahighshelf,frequenciesabove
theturnoverfrequencywillbeaffected.Foralow
shelf,frequenciesbelowtheturnoverfrequencywill
beaffected.
Variouslevelsofcutandboostareshowntotheleft,
alongwithvarious'Q'settings(gainboostsonlyare
showbelow).
Rememberthat'Q'is1/Bandwidth,sothehigher
the'Q',thelowertheBandwidth,andthesmallerthe
rangeoffrequenciesaffected.
Notethat'Q'settingsabove0.75willresultinslight
overshootinthefilterresponse(asseenatthe
highestsettingtotheright).Thisisnormal
behaviouranddoesnotindicateinstability.
Tocreateaflat-toppedEQfilterresponsesuchas
thatshowntotheleft,usetwoEQbands,BOTH
configuredaslowshelves.ForanoverallBOOST,
settheLowerfrequencyfiltertoBOOSTthedesired
amount,andtheUpperfrequencyfiltertoCUTby
thesameamount.
Thisexampleshowsonefilterat100Hzandthe
otherat2kHz,withthe100Hzfilterat–10dB,and
the2kHzfilterat+10dB.Varyingthe'Q'affectsthe
slopeoftheresponse–valuesabove0.75will
causeovershootasshown.
Assymetricalresponsesmaybeachievedby
adjustingthe'Q'ofeachfilterindependantly.
CreatingaFlat-toppedEQResponse
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