Specifications

8
SETTINGUP SYSTEMS AFTERINSTALLATIONFORBESTPERFORMANCE
Mono Amplifiers
General:
Subsonic:
BassBoost:
LowPass:
LevelControlSetup:
LEVEL
LEVEL
Sitbackandenjoythemusic!
Atthispointyouarereadytogetmorespecificonthesettingsforyouramplifier.
Thissettingactsasalowfrequencycutoffforyoursystembassreproduction. Thepointthatyousetitatcutsoffanyfrequenciesfromreproductionbeyondthispoint. The12o’clock
positionisagreatstartingpoint.EXAMPLE:IfyouadjusttheSubsonicto25Hz,theamplifierwillnotplayfrequenciesbelow25Hzbutwillplayfrequenciesfrom25HztothechosenLow
Passfrequency.
Thissettingisafixedbassboostat45Hzthatisvariablefrom0-12dB. Thisfeatureprovidesimpacttoyourbass,butifnotadjustedcorrectly,itcanbeoverusedandcausedamageto
yoursubwoofersandamplifiers.Itisbesttoslowlyturnthissettingclockwiseuntilthedesiredpunchisfelt.Itisnotrecommendedtoexceedthe12o’clockpositionunlesslisteningata
lowvolumeoralowrecordingqualityasthiscanresultinhighdistortionandpossiblyclipping.
TheLPFcontrolactsasaceilinganddoesn’tallowfrequenciestotherightofthedesiredsettingtobereproduced. The12o’clockpositionisagreatstartingpoint.EXAMPLE:Ifyou
adjusttheLowPassto80Hz,theamplifierwillnotplayfrequenciesabove80Hzbutwillplayfrequenciesfrom80HztothechosenSubsonicfrequency.
EnsurethattheLevelisturnedcompletelytotheleftpriortoturningthesystemon.NextyoushouldinsertaCDorcassettethatyouarefamiliarwithtouseasareference,andturnthe
headunitvolumecontroltoabout80%ofitsfullsetting. Thesystemsoundlevelwillofcoursebeverylow,andthefollowingprocedureswillhelpyoutomatchtheamplifierinput
sensitivitiesproperlytotheheadunitoutputsignallevel.
Itisimportanttomatchtheamplifier inputsensitivitytotheRadio/CDoutputsensitivity. ThiscanbelocatedintheRadio/CDmanual.
IftheRadio/CDoutputsensitivityis2volts,thenadjusttheamplifier inputto2volts.
IfyouarenotsurewhattheRadiooutputsensitivityis,followthesegeneralguidelines:
Turnthelevelcontrolupslowly,tillyouheardistortion,thenbackoffafewdegreesonthecontrol.Ifatanypointyouramplifiergoesintoprotection,youwillneedtoturntheLeveltothe
leftabitandthentryagain.Ifyoureachapointwheretheoutputdoesnotincrease,stopturningtheLevelcontroltotherightastheamplifier/subwoofercombohasreacheditsmaxx
outputinthisapplication.
2&4Channel Amplifiers
General:
HighPass:
BassEQ:
LowPass:
LevelControlSetup:
LEVEL
LEVEL
Atthispointyouarereadytogetmorespecificonthesettingsforyouramplifier.
-WheninHPFoperation,thissettingactsasalowfrequencycutoffforyoursystemreproduction. Thepointthatyousetitatcutsoffanyfrequenciesfromreproductionbeyondthispoint.
The12o’clockpositionisagreatstartingpoint.EXAMPLE:IfyouadjusttheHPFto100Hz,theamplifierwillnotplayfrequenciesbelow100Hzbutwillplayfrequenciesfrom100Hztothe
highestfrequencytheamplifieriscapableofreproducing.
-WheninLPFoperation,thissettingactsasalowfrequencycutoffforyoursystemreproductionakaSubsonicFilter. Thepointthatyousetitatcutsoffanyfrequenciesfrom
reproductionbeyondthispoint. The12o’clockpositionisagreatstartingpoint.EXAMPLE:IfyouadjusttheHPFto60Hz,theamplifierwillnotplayfrequenciesbelow60Hzbutwillplay
frequenciesfrom60HztothechosenLowPassfrequency.
-WheninFULL operation,theLPFcrossoverisbypassed.
Thissettingisafixedbassboostat45Hzthatisvariablefrom0-12dB. Thisfeatureprovidesimpacttoyourbass,butifnotadjustedcorrectly,itcanbeoverusedandcausedamageto
yourspeakersandamplifiers.Itisbesttoslowlyturnthissettingclockwiseuntilthedesiredpunchisfelt.Itisnotrecommendedtoexceedthe12o’clockpositionunlesslisteningatalow
volumeoralowrecordingqualityasthiscanresultinhighdistortionandpossiblyclipping.
TheLPFcontrolactsasaceilinganddoesn’tallowfrequenciestotherightofthedesiredsettingtobereproduced. Turningthepotentiometerallthewaytotherightisagreatstarting
point.EXAMPLE:IfyouadjusttheLPFto120Hz,theamplifierwillnotplayfrequenciesabove120Hzbutwillplayfrequenciesfrom120HztothechosenHiPassorSubsonicfrequency.
-WheninHPFoperation,thissettingisbypassed.
EnsurethattheLevelisturnedcompletelytotheleftpriortoturningthesystemon.NextyoushouldinsertaCDorcassettethatyouarefamiliarwithtouseasareference,andturnthe
headunitvolumecontroltoabout80%ofitsfullsetting. Thesystemsoundlevelwillofcoursebeverylow,andthefollowingprocedureswillhelpyoutomatchtheamplifierinput
sensitivitiesproperlytotheheadunitoutputsignallevel.
Itisimportanttomatchtheamplifier inputsensitivitytotheRadio/CDoutputsensitivity. ThiscanbelocatedintheRadio/CDmanual.
IftheRadio/CDoutputsensitivityis2volts,thenadjusttheamplifier inputto2volts.
IfyouarenotsurewhattheRadiooutputsensitivityis,followthesegeneralguidelines:
Turnthelevelcontrolupslowly,tillyouheardistortion,thenbackoffafewdegreesonthecontrol.Ifatanypointyouramplifiergoesintoprotection,youwillneedtoturntheLeveltothe
leftabitandthentryagain.Ifyoureachapointwheretheoutputdoesnotincrease,stopturningtheLevelcontroltotherightastheamplifier/speakercombohasreacheditsmaxx
outputinthisapplication.
Always start with the bass,or low frequency amplifier asa reference, by turning itscontrol up to the point where distortion is audible, and back it offsome.
Now adjust the level controlfor the highs or tweeterchannels in a 2 way active system, to balance the highs to lows.
In a 3 way active system, match the midrange level to the bass, and then the highs to the midrange and bass. It may be necessary to perform a few iterations of the midrange and highs level
control settings to achieve asatisfactory sound balance.
2 or 3 way active systems (all):