Operating Elements; Protection Circuit - Autotek TransAm TA 1800 Bedienungsanleitung

OPERATING ELEMENTS

INPUT SENSITIVITY
Turn the GAIN controller (Fig. 1,3) of the amplifier 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 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 amplified and the subwoofer plays more precisely and efficient.
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!
VARIABLE SUBSONIC FILTER
With the SUBSONIC controller (Fig. 1,4) you can adjust the lower cross-over frequency, to filter 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 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.
BASS LEVEL REMOTE CONTROLLER
With the included bass level cable remote controller you are able to adjust the bass level e.g. out of the driver's
seat.
MASTER/SLAVE OPERATION
The Master/Slave Operation allows to link two identical TA1800 amplifiers. The advantage of this function is,
that the crossover section of amplifier 2 will be bypassed and for both amplifiers the same crossover settings
come into operation, which can be adjusted on the amplifier 1. Then both amplifiers work together as one big
monoblock. Please refer to section "MASTER/SLAVE OPERATION WITH TWO TA1800" on page 12 and the
figures 5a to 5c on the very last page.

PROTECTION CIRCUIT

The Operation-LED (POWER, fig. 1,1) lits up, if the amplifier is in operation.
The protection LED (PROTECT, fig. 1,1) lits up, when the amplifier 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 amplifier automatically. The amplifier should work again properly after you have
solved the problems.
10