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7. Remote connection: Connect 18 AWG or larger wire to the remote turn-on
signal or power antenna signal from the source unit. If you do not have either of
these signals available, use the "ignition on" or "accessory" signal to drive a relay
that will connect the battery to the REM input on the amplifier when the key is in
the ignition. Be sure all connections are secure.
8. Fuse: Remove the fuse from the amplifier before making or breaking any
connections in your installation. If you need to replace the fuse, use only a fuse
of the same style and amperage rating as that shipped with the amplifier (see
chart below). If the fuse blows, it is telling you there is something wrong. Please
listen. The DPS500
uses an
ATC 40
amp fuse.
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9. Status indicators: The green LED indicates the amplifier power supply is
working. If the green LED is flashing, it is an indication that the +12V connection
is dipping below 10.5Vdc, or that the speaker load is too low. The yellow LED
indicates the amplifier has shut down due to overheating. When the amplifier has
reached the correct operational temperature, it will turn itself back on. The red
LED indicates the amplifier has shut down due to too much current through the
output stage. This excessive current can be caused by speaker shorts, too low of
speaker loads, incorrect transformer configuration, or incorrect input level setting.
The REM signal must be shut off and turned back on before the current protect
will reset and allow the amplifier to operate.
10. Crossover: All SERIES 218
amplifiers have a built in programmable
©
crossover filter. You may select the high-pass, low-pass or bypass modes thru a
switch on the bottom of the amplifier located near the speaker connections.
Remove the black cap plug to gain access to the switch. If you select high-pass
mode the amplifier will play all frequencies from 80 Hz and up. If you select low-
pass mode the amplifier will play all frequencies from 80 Hz and down. All
amplifiers are shipped in the bypass mode that disconnects both the input and
output of the crossover filter from the audio path.
MOUNTING
1. The amplifier will work best if it is kept as cool as possible. Mount the amp in a
position that will allow air to flow freely through the fins. Hot air rises, so orienting
the amp with the connectors facing the ground and the status indicators facing
the sky is the ideal mounting position. The amplifier should not be mounted
upside down. Be sure there is ample space above the amplifier to avoid trapping
heated air against the heat sink.
2. The heat sink of your amplifier is designed to act as a noise shield. To
maintain this protection, be sure the metal case of the amplifier does not touch
any metal in the car. Do not remove or damage the rubber grommets that provide
electrical insulation and vibration isolation. Avoid mounting the amplifier in the
© 2008 Linear Power, Inc. - ALL RIGHTS RESERVED
3
LINEAR POWER™ is a trademark of Linear Power, Inc.
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