Kicker SX900.4 - Manual (Page 8)

8
SX .4 Series Amplifiers
Installa
tion
Wiring
Signal is input into the amplifier using the low level RCA input
connections. If your source unit does not have RCA output
connectors you will need to use a Hi-Lo level signal adapter. See
your Kicker dealer for more details on this.
The output (PAST) RCA jacks provide an unaltered signal
output to feed another amplifier or component.
SOURCE UNIT
Front
Rear
The use of twisted pair interconnects is recommended for all
installations to minimize noise. When routing these cables
through the automobile, try to keep them away from factory
wiring harnesses and other power wiring. If you need to cross
any of this wiring do so at a 90 degree angle to reduce the
possibility for noise problems.
When working with power connections it is always recom-
mended that you disconnect the battery to prevent accidents.
The ground should be connected to the amplifier first before
making any of the other connections. This wire should be as
short as possible (24 inches or less) and connected to a
paint/corrosion free solid metal area of the car’s chassis. Use the
same gauge wire as recommended for the amplifier’s power
connection to the battery. Adding an additional ground wire
between the car battery’s negative post and the car chassis of
this same gauge (or larger) is also recommended.
If you ever need to remove the amp from the vehicle after it
has been installed, the ground wire should be the last wire
disconnected from the amplifier, just the opposite of when you
installed it.
A fuse must be installed within 18 inches of the battery to
protect the power wire feeding your amplifier. This fuse should be
of at least the same value used in the amplifier but no higher
than the capacity of the power wire. See the charts below for
wire size and fusing recommendations.
Model Fuse Size Wire Size
Wire Size Length Maximum Fuse
SX700.4
SX900.4 80A
120A 4 GA
1/0 GA
8 Ga
4 Ga
1/0 Ga
1/0 Ga
8 Ga
4 Ga
1/0 Ga
1/0 Ga 70 Amps
175 Amps
250 Amps
400 Amps
40 Amps
90 Amps
150 Amps
200 Amps Less than
10 feet in
length
10 feet to
20 feet in
length