Power Supply Connections - Signat ROM2 Bedienungsanleitung

3.4

Power supply connections

3.4.1 Ground cable
Good grounding constitutes the basis for a high audio quality of the entire system. To avoid
unwanted ignition noise caused by ground loops, it is essential to permanently connect the
ground cable of the ROM amplifier to a clean, bare, metal surface of the vehicle's chassis.
Please ensure that the metal of the vehicle chassis is bright and free from paint residues. The
best solution is to connect the ground cables of all audio components (car radio, amplifier,
equalizer, etc.) to one common place of the vehicle's chassis. The length of the ground wire
should not exceed 1 meter. Connect the ground cable to the screw terminal labeled 'GND'.
3.4.2 +12V Power cable
Run a power cable from the battery to the amplifier (screw terminal labeled "+12V"); use an
appropriate cable size. For safety measures you have to install an additional fuse (not
included) within 20 centimeters distance from the battery. Keep in mind that the fuse also has
to protect the vehicle against possible electrical fires caused by short circuits. Inserting the
fuse should be the last installation step in any system before initial power up.
Due to the power requirements of the ROM amplifier, the +12V power cable should be directly
connected to the positive (+) terminal of battery, NOT to the electrical system of the car.
3.4.3 Remote-turn-on-cable
The remote-turn-on-cable is connected to the 'Remote' connection or to the 'Automatic
antenna' connection of the radio unit. The latter is only activated when the radio is switched
'ON'. Therefore, the amplifier is switched off if 'remote' is not activated; this saves your
battery.
GND
+12V
REM
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