Wiring Instructions
Signal can be input into the amplifier using either the low level RCA input con-
nections or the high level speaker level connections. Using the low level RCA
connections is the preferred method. Use the high level inputs only if your head
unit does not have low level RCA type outputs. Connecting to the amp with
either input will provide a low level signal at the output (
PAST
)
jacks.
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 recommended that you dis-
connect 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 amplifiers 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 amplifi-
er, just the opposite as 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 wire. See the chart below
for wire size and fusing recommendations.
Model
Fuse Size
Wire Size
KX300.2
50A
8 GA
KX400.2
60A
4 GA
KX500.2
70A
4 GA
KX800.2
120A
2 GA
SOURCE UNIT
Left +
Left -
Right -
Right +
Speaker
Outputs
RCA
Outputs
WARNING-
Use Only One...Never Both At The Same Time !!!
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