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MOUNTING
1. The amplifier will work best if it is kept as cool as possible. Mount in a position
that allows air to flow freely through the fins. Be sure there is ample space above
the amplifier to avoid trapping heated air rising from the amplifier. The amplifier
should not be mounted upside down. Avoid mounting any amplifier in the dash or
on the firewall to avoid noises being radiated directly into the case.
2. The case of your amplifier is designed to act as a noise shield. To maintain
this protection, be sure the metal case of the amp does not touch the metal of the
car. Do not remove or damage the rubber grommets, which provide electrical
insulation and vibration isolation.
GENERAL TROUBLESHOOTING
NO SOUND: Check all connections. Check main power fuse. Check accessory
fuse of your vehicle. Check to see that +12Vdc is present at the amplifier on the
power wire, and on the red/white remote turn-on wire. Check for a solid ground
connection. Check that the main music source is putting out signal.
BLOWS FUSES: Check all connections to be sure no wires are touching each
other or the chassis of the vehicle or any other equipment in your install. Check
that your speakers are in proper working order.
SHUTS OFF: These amplifiers are equipped with a Thermal Shutdown System.
If the amplifier becomes too hot during operation, it will shutdown until it cools to
proper operating temperature. This can be caused by lack of proper air
circulation to the amp, or too low of speaker impedance.
INTERNAL SPEAKER FUSES
The 452i
is equipped with internal speaker fuses to protect these amps and
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your speakers. If you lose operation of one or both channels in these amps, first
check all the connections. If the internal fuses need replacement, remove the
faceplate of the amp and replace the fuse(s) with one of the correct size and
type. The 452i
uses a GMA-5, 5 AMP style fuse. Later model amps may use an
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ATC-5 style, 5-amp fuse. Check all speaker wiring, or the speaker to insure
against shorts, also check for proper speaker impedance.
Remember, the fuse did not fail without reason!
© 2008 Linear Power, Inc. - ALL RIGHTS RESERVED
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LINEAR POWER™ is a trademark of Linear Power, Inc.
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