POWER INPUT
GND REM 12V
R
SPEAKER OUTPUT
L
FUSE
BRIDGED
POWER
PROTECT
421 3
Installation of RCA/Audio signal cables and power supply.
Attend while installation not to lead the audio cables between the headunit and the amplifier together with the power supply wires
on the same side of the vehicle. The best is a areal separated installation in the left and right cable channel of the vehicle. Therewith
a overlap of interferences on the audio signal will be avoided. This stands also for the equipped bass-remote wire, which should be
installed not together with the power supply wires, but rather with the audio signal cables.
REFERENCE NOTE
GND
Connect this GROUND terminal with a suitable contact ground point on the vehicle’s chassis. The ground wire must be as short
as possible and must be connected to a blank metallic point at the vehicle’s chassis. Ensure that this ground point has a stable
and safe electric connection to the negative “–”pole of the battery. Check this ground wire from the battery to the ground point if
possible and enforce it, if required. Use a ground wire with a sufficient cross section (at least 20 mm
2
) and the same size like the
plus (+12V) power supply wire.
1
2
3
BEFORE THE CONNECTION
For the professional installation of a sound system appropriate wiring kits are available in car audio retailer stores. Attend the sufficient
profile section (at least 20 mm
2
), the suitable fuse rating and the conductivity of the cables when you purchase your wiring kit. Clean and
remove rust-streaked and oxidized areas on the contact points of the battery and the ground connection. Make sure that all screws are
fixed tight after the installation, because loosely connections may cause malfunctions, unsufficient power supply or interferences.
REM (TURN-ON SIGNAL)
Connect the turn-on signal (e.g. automatic antenna) or the turn-on remote signal of your headunit with the REM-terminal of the
amplifier. Use therefor a suitable cable with a sufficient cross section (0,5 mm
2
). Thereby the amplifier will turn on or off automatically
with your headunit.
BATT+12V
Connect the BATT+12V-terminal with the +12V pole of the vehicle’s battery. Use therefor a suitable cable with a sufficient cross
section (min. 20 mm
2
) and install a additional in-line fuse. For safety reasons the distance between the fuseblock and the battery
must be shorter than 30 cm. Do not install the fuse into the fuseblock until the installation is accomplished.
4
FUSE
The inserted fuses protect the amplifier from shorts and capacity overload. The equipped standard fuse is suitable for a 4 ohm
speaker load. For a 2 ohm speaker load the current consumption increases by 50%, thereby the fuses may need to be replaced
by fuses with a higer rating.
ELECTRICAL INTERCONNECTION
20
I N S T A L L A T I O N I N S T R U C T I O N S
NSC2100/NSC475
