Typical Installation Sequence
The following represents the sequence for a typical amplifier installation, using an aftermarket source unit or OEM Interface processor (like the CleanSweep® CL441dsp). 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
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. 4 AWG is the minimum recommended wire size for this amplifier. Use a 2 AWG or 1/0 AWG main power wire with a power distribution block when additional amplifiers are being installed with the HD900/5 and powered from the same main power wire.
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
5) Run speaker wire from the speaker systems to the amplifier mounting location.
6) Find a good, solid, bare metal grounding point close to the amplifier and connect the negative power wire to it using appropriate hardware. Use minimum 4 AWG wire up to 60 inches (150 cm) long from the amplifier to the ground connection point. In some vehicles, it may be necessary to upgrade the battery’s ground wire as well. (See page 7 for important notice).
7) Securely mount the amplifier using appropriate hardware. (See page 8 for detailed mounting instructions).
8)Connect the remote
9) Connect the RCA input cables
to the amplifier.
10)Connect the speaker wires to the speaker connector plugs and insert the plugs firmly into the speaker connector receptacles.
11)Carefully review the amplifier’s control settings to make sure that they are set according to the needs of the system.
12)Install power wire fuse (60A for a
single HD900/5) and reconnect the negative battery post terminal.
13)Turn on the source unit at a low level to
14)Make necessary adjustments to the input sensitivity controls to obtain the right overall output and the desired balance
in the system. See Appendix C (pages 18, 19) for the recommended input sensitivity setting method.
15)Enjoy the fruits of your labor with your favorite music.
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