Planning Your Installation - JL Audio M400/4-24V Owner's Manual

PLANNING YOUR INSTALLATION

It is important that you take the time to read
this manual and that you plan out your
installation carefully. The following are some
considerations that you must take into account
when planning your installation.
Cooling Efficiency Considerations:
The outer shell of your JL Audio amplifier is
designed to remove heat from the amplifier
circuitry. For optimum cooling performance, this
outer shell should be exposed to as large a volume
of air as possible. Enclosing the amplifier in a
small, poorly ventilated chamber can lead to
excessive heat build-up and degraded
performance. If an installation calls for an
enclosure around the amplifier, we recommend
that this enclosure be ventilated with the aid
of a fan. In normal applications, fan-cooling
is not necessary.
Mounting the amplifier upside down is
strongly discouraged.
Chassis Ground
Connector
(pg. 5)
+24 V Power Remote Turn-On
Connector Connector
(pg. 5) (pg. 6)
Channels 1 & 2 Left & Right Preamp
Preamp Input Jacks Output Jacks
(pg. 6) (pg. 9)
Channels 3 & 4
Preamp Input Jacks
(pg. 6)
Safety Considerations:
Your amplifier needs to be installed in a dry,
well-ventilated environment and in a manner
which does not interfere with your vehicle or
vessel's factory installed electronic devices. You
should also take the time to securely mount the
amplifier using appropriate hardware so that it
does not come loose in the event of a collision or a
sudden jolt to the vehicle or vessel.
Stupid Mistakes to Avoid:
• Check before drilling any holes in your vehicle
or vessel to make sure that you will not be
drilling through the hull, a fuel tank, fuel line,
wiring harness or other vital system.
• Do not run system wiring outside or underneath
the vehicle or vessel. This is an extremely
dangerous practice which can result in severe
damage and/or injury.
• Protect all system wires from sharp edges
(metal, fiberglass, etc.) by carefully routing
them, tying them down and using grommets
and loom where appropriate.
• Do not mount the amplifier in the engine
compartment or in any other area that will
expose the amplifier circuitry to the elements.
While this amplifier is designed
for marine applications, it is not waterproof
and it should not be mounted where it is
likely to get wet.
Jack for
Remote Level Channels 1 & 2
Control Knob Speaker Outputs
(pg. 9) (pg. 10)
Channels 3 & 4
Speaker Outputs
(pg. 10)
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