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10
INPUT SENSITIVITY
OPERATING ELEMENTS
TurntheGAINcontroller(Fig.1,3)oftheampliertotheMINposition.Thenturnthevolumecontrollerofthe
head unit to 80 - 90% of its full setting. Now turn GAIN clockwise until you hear some distortion. Then turn back
the GAIN (Fig. 1,3) slightly until you hear a cleaner sound.
The “Input Sensitivity” (Fig. 1.2) switch allows to set the input sensitivity from “0.2V - 2V” to “2V - 8V”.´
VARIABLE SUBSONIC FILTER
WiththeSUBSONICcontroller(Fig.1,4)youcanadjustthelowercross-overfrequency,tolterouttheverylow
frequencies to relieve the subwoofer or to generate a bandpass signal. If you don’t want to use this function,
turn the controller (Fig. 1,4) to the very left to the 20 Hz position.
NOTE: The adjusted value of the SUBSONIC (Fig. 1,4) should not be higher than the adjusted value of the LPF
controller (Fig. 1,7). Otherwise no sound will be audible.
VARIABLE LOW PASS FILTER
Set the desired cross-over frequency by using the controller LPF (Fig. 1,7). Thus to that only the frequencies
belowthechosencross-overfrequencywillbeampliedandthesubwooferplaysmorepreciselyandefcient.
BASS LEVEL REMOTE CONTROLLER
MASTER/SLAVE OPERATION
With the included bass level cable remote controller you are able to adjust the bass level e.g. out of the driver’s
seat.
TheMaster/SlaveOperationallowstolinktwoidenticalTA1800ampliers.Theadvantageofthisfunctionis,
thatthecrossoversectionofamplier2willbebypassedandforbothampliersthesamecrossoversettings
comeintooperation,whichcanbeadjustedontheamplier1.Thenbothampliersworktogetherasonebig
monoblock. Please refer to section ”MASTER/SLAVE OPERATION WITH TWO TA1800” on page 12 and the
gures5ato5contheverylastpage.
VARIABLE BASS EQ
With the BASS EQ controller (Fig. 1,8) you are able to adjust the bass level from 0 - 18 dB.
Attention: Use the BASS EQ wisely!
PROTECTION CIRCUIT
TheOperation-LED(POWER,g.1,1)litsup,iftheamplierisinoperation.
TheprotectionLED(PROTECT,g.1,1)litsup,whentheamplierisoverheated,orashortcircuitoccurs
resp. a too low impedance load is connected to the speaker outputs. If this events, the internal built-in protec-
tioncircuitshutsdowntheamplierautomatically.Theampliershouldworkagainproperlyafteryouhave
solved the problems.
VARIABLE PHASE
The PHASE controller (Fig. 1,10) allows to set the phase between 0°and 180° to match the run time of the
output signal with the vehicle’s interior acoustic.
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