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. 1,2) 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 con-
nect 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
Turn the GAIN (Fig. 1,3) controller 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
If the amplifier is to be used for mid-range/tweeter loudspeakers, set the switches X-OVER (Fig. 1,6) to HPF.
Then set the desired cross-over frequency on the HPF controller (Fig.1,7). 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.1,6). to "FULL". In this case, the HPF controller are without
function (Fig.1,7).
VARIABLE LOW PASS FILTER
If the amplifier is used to drive a subwoofer, set the switch (Fig. 1,6) to „LPF". Set the desired cross-over
frequency by using the controller (Fig. 1,5). 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
By using the BASS EQ switch (Fig.1,4) you are able to increase the bass level by 6 or 12 dB at 60 Hz.
Attention: Use the BASS EQ wisely!
10
grey
= speaker - right - positive
brown
= speaker - right - negative
white
= speaker - left - negative
green
= speaker - left - positive