Connecting The Power Supply - Conrad Electronic FS8 Notice D'emploi

8. Connecting the power supply

The electrical connection should be done by a specialist.
To avoid short-circuits and any resulting damage to the device, the negative terminal (earth) of
the car battery has to be disconnected when connecting the power supply.
Only re-connect the negative terminal of the battery when the device is fully connected and after
you have checked the connection.
You should only use a voltmeter or a diode test lamp for checking the voltage on the on-board
cables as normal test lamps consume excessive currents and can thus damage the electrical
system of the vehicle.
When installing the cables, make sure that they are not squeezed or worn by sharp edges. Use
rubber grommets at cable feedthroughs.
In order to reduce parasitic induction of the generator or other electric installations of the
vehicle, the subwoofer should be directly powered by the car battery. No other electrical loads
such as the fan, the windscreen washer etc. must be supplied with power by the same cable as
the subwoofer.
Use connecting cables with a cross-section as big as possible when connecting the power
supply and the earth of the subwoofer. The required cross-section of the cable depends on the
power requirement of the connected components.
If the cross-section is too small, the cable might char through. Moreover, the increased
resistance reduces performance unnecessarily.
An additional fuse for the positive line of the subwoofer is absolutely required (fuse holder is
not included in delivery). The fuse should be placed as close as possible to the battery (max.
distance 20 cm). In case of a short-circuit (e.g. if the connecting cable is worn through), the fuse
will disconnect the positive line to avoid damage to the battery and prevent the supply cable
from burning.
The strength of the fuse depends on the power consumption of the connected devices of the
car hi-fi system.
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