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4 JL Audio
TYPICAL INSTALLATION SEQUENCE
The following represents the sequence
for a typical amplifier installation, using an
aftermarket source unit or OEM Interface
product. Additional steps and different
procedures may be required in some applications.
If you have any questions, please contact your
authorized JL Audio dealer for assistance.
1) Disconnect the negative battery post
connection and secure the disconnected cable
to prevent accidental re-connection during
installation. This step is not optional!
2) Run power wire (minimum 8 AWG)
from the battery location to the amplifier
mounting location, taking care to route it
in such a way that it will not be damaged
and will not interfere with vehicle
operation. Use 4 AWG, 2 AWG or 1/0
AWG power wire if additional amplifiers
are being installed with the J2-250.1.
3) Connect power wire to the positive battery
post. Fuse the wire with an appropriate fuse
block (and connectors) within 18 inches (45
cm) wire length of the positive battery post.
This fuse is essential to protect the vehicle. Do
not install the fuse until the power wire has
been connected to the amplifier.
4) Run signal cables (RCA cables) and remote
turn-on wire from the source unit to the
amplifier mounting location.
5)
Run speaker wire from the speaker systems
to the amplifier mounting location.
6)
Find a good, solid metal grounding point
close to the amplifier and connect the negative
power wire to it using appropriate hardware.
Use minimum 8 AWG power wire, no longer
than 36 inches (90 cm) from the amplifier to
the ground connection point. In some vehicles,
it may be necessary to upgrade the battery
ground wire. (See page 5 for important notice).
7)
Securely mount the amplifier using
appropriate hardware.
8)
Connect the positive and negative power
wires to the amplifier.
9)
Connect the remote turn-on wire
to the amplifier.
10)
Connect the RCA input cables
to the amplifier.
11)
Connect the speaker wires to the amplifier.
12)
Carefully review the amplifier’s control
settings to make sure that they are set according
to the needs of the system.
13)
Install power wire fuse (30A for a single J2-250.1)
and reconnect the negative battery post terminal.
14)
Turn on the source unit at a low level
to double-check that the amplifier is configured
correctly. Resist the temptation to crank it up
until you have verified the control settings.
15)
Make necessary adjustments to the input
sensitivity controls to obtain the right
overall output and the desired balance
in the system. See Appendix A (page 12)
for the recommended input sensitivity
setting method.
16)
Enjoy the fruits of your labor with your
favorite music.