
24 5
OPERATION
GND(-)=GROUND CONNECTION
Connect the GND terminal to the chassis ground of your car andtake 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 fromthe ground point.
After that fasten the cable endwith added ring terminal by usinga screw. Ensure
that the ground connection is as short as possible and that thecable 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 thepositive pole of the battery with a lead cable
and add a fuse in tothe power cable in a distanceof not more then 30 cmfrom the
battery. The lead cables's diameter should be at least 4mm' 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 amplifierautomatically switches
ON and OFF. Acable 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 isfree 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, unitwired out of phase.
t
TROUBLE SHOOTING
INTERFERENCE
Use only ascreened audio cablefor the wiringbetween " low level in " of the
amplifier and RCAor DIN outputof the radio.
Lay the signal, speaker and power cables separately with enough distance
from one anotherand also fromeach other carcable. lf notpossible, you can
lay the circuit and ground cable together with the serial cables. Audio and
speaker cable shouldbe as faraway from theseas possible. The REM cableto
the automatic antennaoutput of the radio can be laid together with the signal
cables.
Avoid ground loops by laying the ground wiringof all componentsto a center
point in astar-like way. You can find the best central point in measuring the
voltage directly atthe battery. Now compare this voltage value with the chosen
ground point andthe (+) 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. Youshould measure withthe 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 coreleads and twistthem together.
If there are noises from the car electronics. Add an interferencesuppression
choke to thepower wiring .
If there are huming noises, use thicker ground cablesor add further ground
cables to thechassis.
Toreduce contact resistance and bad and loose contacts, please tin the cable
ends or use multi core cable ends, spade terminals or others. GoldPlated
spade terminal are free of corrosion and have thelowest contact resistance.
Should all these measures to without any success. the use of aground loop
isolator may solvethe problem.
All cables aresources of interference. The power cable and RCA audio cable
are very proneto interference; theremote cables areless prone . There is often
interference caused bythe generator (piping), ignition ( cracking) or other car
electronic parts. Mostof these problemscan be eliminated by correct and careful
cabling. In doingso, these arethe following guidelines: