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JL Audio
PRODUCT DESCRIPTION
JL Audio JX monoblock subwoofer
amplifiers are specifically designed to drive
subwoofers. Their frequency response is
limited to the range below 150 Hz, making
them unsuitable for driving midrange speakers
or tweeters. For detailed specifications,
please refer to Appendix B (page 13).
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 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. See
next page for appropriate wire size.
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 the same size power wire
used for the +12V connection, no longer
than 36 inches (90 cm) from the amplifier's
ground (GND) connector 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 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 (see next page for
correct value) 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.
