Product Description
The M600/1 is a monoblock amplifier utilizing JL Audio NexD™ high speed switching technology to deliver outstanding fidelity and efficiency.
The M600/1 can be operated with a wide variety of source units and system configurations.
Its frequency response is limited to the range below 500 Hz. It is not designed for driving midrange speakers or tweeters. Every aspect of its operation has been optimized for
Typical Installation Sequence The following represents the sequence
for a typical amplifier installation, using an aftermarket source unit. 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 4 AWG 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 vessel operation. Use 4 AWG or larger power wire and a power distribution block if additional amplifiers are being installed with the M600/1.
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 vessel. Do not install the fuse until the power wire has been securely connected to the amplifier.
4) Connect negative power wire to the negative battery post. Use the same size power wire as the wire connected to the “+12V” connection (minimum 4 AWG).
5) Run signal cables and remote
6) Run speaker cable from the subwoofer system(s) to the amplifier mounting location.
7) Securely mount the amplifier.
8) Connect the positive and negative power wires to the amplifier. A fuse near the amplifier is not necessary if the M600/6 is the only device being run from the fused main power wire. If the fused main power wire is shared by the M600/6 and other amplifiers or devices, fuse each amplifier/device within 12 inches (30 cm) of wire length,
via a fused distribution block or multiple individual fuse
9) Connect the remote
to the amplifier.
10)Connect the input cables to the amplifier.
11)Connect the speaker cables 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 the power wire fuse (50A for a single M600/1) and reconnect the negative battery post terminal. Install the fuse (50A) near the amplifier (if applicable).
14)Turn on the source unit at a low level to
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 14) for the recommended input sensitivity setting method.
16)Enjoy the fruits of your labor with your favorite music.
Power Connections
Before installing the amplifier, disconnect the negative (ground) wire from the vessel’s battery. This will prevent accidental damage to the system, the vessel and your body during installation.
The M600/1’s “+12 VDC” and “Ground” connections are designed to accept 4 AWG power wire. 4 AWG is the required wire size for this amplifier.
If you are installing the M600/1 with other amplifiers and wish to use a single main power wire, use 2 AWG or 1/0 AWG main power wire (depending on the overall current demands of all the amplifiers in the system). This 2 AWG or 1/0 AWG power wire should terminate into a fused distribution block mounted as close to the amplifiers as possible (within 12 inches / 30cm of wire length). The fused output of the distribution block will connect to the M600/1 with 4 AWG power wire. JL Audio ECS
fused distribution blocks are recommended
(XD-FDBU-2 and XD-FDBU-4)
Note: Smaller AWG numbers mean bigger wire and
To connect the power wires to the amplifier, first back out the set screw on the top of the terminal block, using the supplied 2.5 mm hex wrench. Strip 1/2 inch (12 mm) of insulation from the end of each wire and insert the bare wire into the terminal block, seating it firmly so that no bare wire is exposed. While holding the wire in place, tighten the set screw firmly, taking care not to strip the head of the screw.
The ground connection should be made using the same gauge wire as the power connection.
Any wires run through barriers must be protected with a high quality rubber grommet to prevent damage to the insulation of the wire. Failure to do so may result in a dangerous short circuit.
Many vessels employ small (10 AWG - 6 AWG) wire to connect the alternator’s positive connection to the battery. To prevent voltage drops, this wire should be upgraded to 4 AWG when installing amplifier systems with main fuse ratings above 60A.
It is common for the alternator to be grounded through its chassis. If the alternator is not grounded through its chassis and instead employs a small (10 AWG - 6 AWG) wire to connect to ground, this wire should also be upgraded to 4 AWG when installing amplifier systems with main fuse ratings above 60A.
Fuse Requirements
It is absolutely vital that the main power wire(s) to the amplifier(s) in the system be fused within 18 inches (45 cm) of the positive battery post connection. The fuse value at each power wire should be high enough for all of the equipment being run from that power wire. If only the M600/1 is being run from that power wire, we recommend a 50A fuse be used.
If fusing the amplifier near its power connections (when more than one amp is being run from the main power wire), use a 50A fuse.
MAXI™ (big
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