Set Up Section
Gain Control Setting
Tocorrectlysetthegaincontroloftheamplifiertomatchthatofthesource(headunit)usethe
followingsetuproutine:
● Turnthegaincontroltominimumontheamplifier.
● Ontheheadunitsetallcrossoverstoflatandbothbassandtrebletozero.
● Turnupthesource(headunit)toapprox3/4volume.
● Veryslowlyturnupthegainontheamplifieruntildistortioncanbeheardinanyofthe
speakersoruntilthevolumereachesanuncomfortablelisteninglevelwhenthisisreached
turndownthegaincontrolslightly.
Thegaincontrolisnowset.
Crossover Setting
AllFLIactiveenclosurescomewitha
builtinFrequencyControl.Thiswill allowyoutosetthe
frequencyatwhichtheamplifierfilterwilltakeaffect.Itisvariablefrom40Hz-250Hz.40Hzwill
produceonlylowfrequencies,verydeepbass.Whilst250Hzwillproducelowandhigherpunchy
bassfrequencies.Inthecorrect
setupthebassshouldnotbeoverlyprominent,althoughsome
usersmaywishtohaveabiggerbasspresence.
Tosetthiscorrectlyfollowthefollowingroutine:
● Firstlysetthegaincontrolcorrectlyasdescribedabove.
● Playaknownpieceofdynamicmusicthroughtheentiresystem.
● UsetheFrequencyControltoblendthefrequenciesfromthesubwooferintotherestofthe
vehiclesothatthebasscomingfromtheenclosuredisappears'orblendsinwiththerestof
thecarspeakers.
Thecrossoverisnowset.
Troubleshooting
● Beforeremovingtheamplifier,refertothelistbelowandfollowthesuggestedprocedures.
● Ifinanydoubtgethelpfromacaraudioinstallationexpertorqualifiedautoelectrician.
Amplifier Will Not Power Up. Power On Indicator Not Illuminated
✓ Checkforgoodgroundconnections.Ensureitsconnecteddirectlytobaremetalandnota
paintedsurface.
✓ Usingamultimetercheckthatremoteterminalhasatleast7VDC.
✓ Usingamultimetercheckthatthereisbatteryvoltageonthepositiveterminal.
Checkallfuses.
Fuse Blown
✓ Checkbothpositivesupplyandgroundforshorts.
✓ Checkthatthepositivewireisconnectedtothepositiveterminalontheamplifier.
✓ Checkthatthenegativewireisconnectedtothegroundterminalontheamplifier.
✓ Ensurethatthea20ampfuseisfitted: