Fusion FUS-MS-AM504 User & Installation Manual page 7

Marine amplifier
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battery positive terminal as possible. Use a fuse or circuit breaker of equal value as that
found on the chassis of your FUSION amplifier. You may now connect the cable to the
battery, but remember to leave the fuse out or circuit breaker off until all other cable
connections are made.
Ground
When grounding your FUSION amplifier, use the same gauge cable for ground as
you did for the power. Secure the ground cable to the appropriate ground point, now
its time to connect the power and ground cables to the amplifier. Cut both cables to
length. Use a hex type screwdriver to loosen the +12V and the GND connections on the
amplifier. Terminate the ground first, and then the +12V and please make sure that you
terminate them into the correct terminals. Then tighten the screws down securely.
Speaker Load
Keep in mind FUSION 'AM' series amplifiers are high power amplifiers and not high
current amplifiers. In other words they require a minimum impedance of 2 ohms
STEREO and 4 ohms bridged MONO to operate trouble free. Too low of an impedance
could send your FUSION amplifier into protection mode and/or damage the amplifier.
Remote Turn-on
This terminal must be connected to a switched +12V source. Typically, remote
turn-on leads are provided at the head unit which will turn on and off the amplifier. If the
head unit does not have a remote turn-on lead, then a power antenna wire can be used.
If neither of these leads are present on the head unit then a switched +12V supply must
be used , like the ACC +12V.
Run a minimum of 18 gauge wire from the amplifier location to the source of the
switched +12V lead. Connect the source remote output to the wire. Go back to the
amplifier and cut the wire to length. Loosen the screw terminal marked REM on the
amplifier using a hex type screwdriver. Slip the wire into the connector and tighten the
screw securely.

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