Operating Elements - Autotek TransAm TA 4150 Bedienungsanleitung

AUDIO SIGNAL CABLES
When installing the audio cables between the RCA outputs of the head unit and the RCA inputs of the amplifier,
the audio and power supply cables should, if possible, not be routed along the same side of the vehicle. We
recommend a separated installation, e.g. routing the power cable through the cable channel on the left side
and the audio cables through the cable channel of the vehicle on the right side or vice versa. This prevents
interferences due to crosstalk into the audio signal.
HIGH LEVEL INPUTS
The HIGH IN (Fig. 1,1 and 1,11) is suitable to connect the amplifier inputs with speaker wires, if your head
unit is not equipped with pre-amplifier RCA outputs. Extend therefor every regarding speaker cable from your
head unit with appropriate speaker cables from your car audio retailer to the mounting location of the amplifier.
Then connect the each matching loudspeaker cable with the cables of the included HIGH IN jack like described
below.
ATTENTION: Never use the High Level Input and the RCA inputs at the same time. This may damage the
amplifier seriously. The loudspeaker cables of the HIGH IN must have no contact to the ground (GND) by any
means.

OPERATING ELEMENTS

INPUT SENSITIVITY CH1&2 + CH3&4
Turn the GAIN controller (Fig. 1,6 and 1,8) 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 slightly until you hear a cleaner sound.
VARIABLE HIGH PASS FILTER CH1&2 + CH3&4
If the amplifier is to be used for mid-range/tweeter loudspeakers, set the switches X-OVER (Fig. 1,3 and 1,9)
to HPF. Then set the desired cross-over frequency on the HPF controller (Fig.1,2 or 1,10). Thus to that only the
frequencies above the chosen cross-over frequency will be amplified. This effectively minimizes distortions and
overloads at lower frequencies. A good point to start is at 125 Hz.
If you use loudspeakers (>20 cm) set X-OVER (Fig.1,3 or 1,9) to FULL. In this case, the HPF controllers
(Fig.1,2 or 1,10) are without function.
VARIABLE LOW PASS FILTER CH3&4
If the amplifier is used to drive a subwoofer, set the switch (Fig. 1,3) to „LPF". Set the desired cross-over fre-
quency by using the controller LPF (Fig. 1,4). Thus to that only the frequencies below the chosen cross-over
frequency will be amplified and the subwoofer plays more precisely and efficient.
SWITCHABLE BASS EQ CH3&4
By using the BASS EQ switch (Fig. 1,5) you are able to increase the bass level by 6 or 12 dB at 45 Hz.
Attention: Use the BASS EQ wisely!
10
grey = speaker - right - positive
brown = speaker - right - negative
white = speaker - left - negative
green = speaker - left - positive