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3. ELECTRICAL WIRING
22
3.1 RCA INTERCONNECTS / REMOTE
LEAD
Carefully run the RCA audio signal interconnect(s) and the
remote switching cable from the head-unit to the amplifier.
The audio signal cables should be routed completely separa-
te from the power cables. Use only double or triple shielded
quality cables!
Connect the remote wire lead to the remote output of the head-
unit and to the remote input terminal of the amplifier. Finally
connect the RCA interconnect cable(s) to the respective out-
puts on the head-unit and the RCA inputs of the amplifier.
3.2 LOUDSPEAKER CABLES
Connect the loudspeaker wires to the speaker terminals of
the amplifier. Use good quality wires of 2.5mm² cross-section.
You will need a set of Allen wrenches for the connection of
the wires!
When baring wires, remove approximately 6-8mm of the in-
sulation and after axially twisting the wires; insert the bare
ends into the corresponding speaker terminal output on the
amplifier. Be sure to follow correct polarity ("+" to "+"; "-" to
"-"). Tighten the terminal screws on the amplifier.
3.3 CONNECTION OF POWER CABLES
Run the positive power cable ("+12 V") directly from the po-
sitive terminal of the car battery to the amplifier. Make sure
the power cable makes good contact to the battery; i.e. use
an appropriate battery clamp that accepts big gauge power
cables! For protection of your car audio system and your en-
tire car against electrical fire hazards from a short-circuit of
the main power cable with chassis ground, you must insert a
main fuse (holder) within the first 30cm of the battery. The fuse
type/value should be matching the limitations of your main
power cable and the requirements of your car audio system.
Preferably a minimum of 80 Amperes with this amplifier and
an appropriate power cable cross-section.
Now you route the ground cable to the amplifier. It is best to
keep the ground cable ("-12V") as short as possible, i.e. to find
a chassis contact very close to the amplifier. The ground power
cable must have the same cross-section as the positive power
cable. It is recommended to use a corrosion-resistant gold-pla-
ted power ring or a massive ground clamp between the ground
cable and the chassis ground point. Keep in mind that audible
interferences and problems originating in the power supply of
the amplifier, are mostly based on a bad ground contact. So a
good (and clean) grounding to the vehicle chassis is absolutely
crucial, to obtain best performance of your amplifier.
R680A2 Manual_E+D.indd 22R680A2 Manual_E+D.indd 22 07.07.2004 12:36:45 Uhr07.07.2004 12:36:45 Uhr
22


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