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APX280M APX490M manual.qxd
INSTALLATION
This section suggests Mounting and Wiring Precautions for installing the Clarion
APX290M and/or APX490M amplifier(s). If you do not posses the necessary tools
and installation experience, do not attempt to install these amplifiers. Instead,
contact your local Clarion Marine Audio dealer to perform the installation.
MOUNTING PRECAUTIONS
Prior to mounting the amplifier, make sure it is safe to mount the amplifier in that
location. Failure to do so can result in serious damage to the boat. In addition,
stainless steel hardware should be used to mount the amplifier and additional
accessories. When possible, use a nut and bolt with a lock washer to secure the
amplifier. Extra care and attention is necessary in marine installations due to the
uncertainty of water conditions.
Additional precautions and suggestions:
1. For the most efficient cooling, mount the amplifier so cool air runs along the
length of the heat sink, rather than across them. To increase air movement and
circulation, a cooling fan can be installed.
2. Mount the amplifier on a rigid surface; avoid mounting to subwoofer enclosures or
areas prone to vibration.
3. Prior to drilling and holes, make sure the proposed mounting holes will not cut
into the fuel tank, fuel lines, electrical wiring, or through the boat.
4. Do not mount the amplifier where it is susceptible to water.
WIRING PRECAUTIONS
Read all of the wiring precautions prior to making any connections. If you are
unsure and/or don't have the necessary installation hardware, contact your local
Clarion Marine Audio dealer to perform the installation.
1. Before you begin the installation, make sure the source unit Power switch is in the
OFF position.
2. Disconnect the negative (-) lead of the battery (or batteries) 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 good ground is critical for the performance of the amplifier. A ground wire
should be run directly from the battery to the amplifier. Use black insulated
10-gauge or larger wire for the amplifier's ground (-) power lead.
5. Add an additional fuse holder and fuse at the positive (+) terminal of the battery.
The fuse rating should equal the total current consumption at full output of the
amplifier(s). Use red insulated 10-gauge or larger wire for the amplifier's positive
(+) power lead. Do not install the fuse until the complete installation has been
performed.
6. When replacing the amplifier's fuse, always use one having the same amperage
rating. Substituting a higher rated fuse or a slow-blow type can result in serious
damage to the amplifier.
2/6/2008
11:38 AM
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Operation/Installation Manual
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