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5
OPERATION
GND(-)=GROUND CONNECTION
Connect the GND terminal to the chassis ground of your car and take care of best
electric and mechanic contact. In doing so, drill a hole in to the car chassis near
the amplifier then remove color, dirt or any other substance from the ground point.
After that fasten the cable end with added ring terminal by using a screw. Ensure
that the ground connection is as short as possible and that the cable diameter is
sufficient ( min 4 mm" ). Route the ground cables from the radio and all other
equipment parts. like equalizer. active crossover network or other amplifiers, to
the same ground point.
+12V=POWER SUPPLY
Connect the +12V terminal to the positive pole of the battery with a lead cable
and add a fuse in to the power cable in a distance of not more then 30 cm from the
battery. The lead cables's diameter should be at least 4 mm' for a length of 3m
and 6 mm" for a length of 6m.
REM(ON/OFF)REMOTE
CONTROL
Connect the REM terminal to the automatic antenna connector of your car radio.
Now when turning on and off your car radio. the amplifier automatically switches
ON and OFF. A cable diameter of 0.5mm is sufficient.
FUSE
The amplifier is equipped with a plug-in auto fuse protecting the set against fault
conditions. Do not use a fuse with a higher value and never bridge the fuse over,
as this may lead to irreparability damage so that ant any claim for warranty is
denied.
No Function:
The connection cable is not connected correctly ( = terminal BATT/GND /REM).
Ensure that all connections and mechanic contact and that the jacket has been
removed. The fuse is defective-pay attention to the correct value of a new fuse!
No Sound:
Speaker cable or speaker plug are not connected correctly.
No Sound /Red LED Protection Shines:
The plus and minus wires of the speaker cable have contact, thus eliminate the
short circuit. If you use a 2 Ohm speaker in stereo mode, a 4 Ohm speaker in
bridge mode or tri-mode and the se is overloaded, then turn the gain control to
"min " until the operation is free of trouble.
Poor Sound Quality ( Distortions ):
The speakers are overloaded, therefore turn down the volume level and check
the volume control positions.
No Stereo Sound And A Weak Bass:
Speaker cables (+) and (-) are mixed up, unit wired out of phase.
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TROUBLE SHOOTING
INTERFERENCE
Use only a screened audio cable for the wiring between " low level in " of the
amplifier and RCA or DIN output of the radio .
Lay the signal, speaker and power cables separately with enough distance
from one another and also from each other car cable. lf not possible, you can
lay the circuit and ground cable together with the serial cables. Audio and
speaker cable should be as far away from these as possible. The REM cable to
the automatic antenna output of the radio can be laid together with the signal
cables.
Avoid ground loops by laying the ground wiring of all components to a center
point in a star-like way. You can find the best central point in measuring the
voltage directly at the battery. Now compare this voltage value with the chosen
ground point and the (+) terminal of the amplifier. lf the measured voltage in
only less different you've found the correct central.Otherwise you have to look
for another point. You should measure with the ignition being switched on and
additionally switched on other electronics ( rear window heating and light ).
If there are pickups from external electrical sources into the speaker cables,
divide the core leads and twist them together.
If there are noises from the car electronics. Add an interference suppression
choke to the power wiring .
If there are huming noises, use thicker ground cables or add further ground
cables to the chassis.
To reduce contact resistance and bad and loose contacts, please tin the cable
ends or use multi core cable ends, spade terminals or others. Gold Plated
spade terminal are free of corrosion and have the lowest contact resistance.
Should all these measures to without any success. the use of a ground loop
isolator may solve the problem.
All cables are sources of interference. The power cable and RCA audio cable
are very prone to interference; the remote cables are less prone . There is often
interference caused by the generator (piping), ignition ( cracking ) or other car
electronic parts. Most of these problems can be eliminated by correct and careful
cabling. In doing so, these are the following guidelines :