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Owner's Manual
INSTALLATION
This section lists Mounting and Wiring Precautions prior to installing the
Clarion APX401.4. These safeguards provide enough detail to complete an
installation successfully. If you do not have the necessary skills, do not
attempt to install the amplifier yourself. Instead, see your authorized Clarion
dealer for installation recommendations.
MOUNTING PRECAUTIONS
Although the Clarion APX401.4 incorporates heat sinks and protection
circuits, mounting the amplifier in a tight space without any air movement can
still damage internal circuitry over time. Choose a site that provides adequate
ventilation around the amplifier. For easy system set-up, mount the amplifier
so the front panel controls can be accessible after installation.
In addition, observe the following precautions:
1. For the most efficient cooling, mount the amplifier so cool air runs along the
length of the fins rather than across them. Remember, any moving air will
dissipate heat.
2. Mount the amplifier on a rigid surface. Avoid mounting to subwoofer enclo-
sures or areas prone to vibration. Do not install the amplifier on plastic or
other combustible materials.
3. Prior to drilling, make sure proposed mounting holes will not cut into the
fuel tank, fuel lines, brake lines (under chassis), or electrical wiring.
WIRING PRECAUTIONS
Read all wiring precautions. If you are not sure of the connections, contact
your authorized Clarion dealer.
1. Before installation, make sure the source unit Power switch is in the OFF
position.
2. Disconnect the negative (-) lead of the battery before making any power
connections.
3. When making connections, be sure that each connection is clean and
secure. Insulate final connections with electrical tape or shrink tubing. Failure
to do so may damage your equipment.
4. A secure, clean ground connection is critical to the performance of your
Clarion amplifier. Use the shortest ground wire possible and securely connect
to the car chassis to minimize resistance and avoid noise problems. Be sure
to clean off any paint, prior to making this connection.
5. Add an external fuse on the amplifier's positive (+) power lead and connect
it as close as possible to the vehicle's (+) battery terminal. Use a fuse rated to
the total current consumption of the amplifier(s). Adding an external fuse will
protect the electrical system from short circuits that can cause a fire.
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