Troubleshooting
Before removing the amplifier, refer to the list below and follow the suggested procedure.
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Always test the speakers and confirm that they are wired correctly first.
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If in any doubt get help from a qualified auto electrician.
Amplifier Will Not Power Up
Check for good ground connections. Ensure Ground cable is connected directly to bare metal and not a painted surface.
Using a multimeter check the that remote terminal has at least 7V DC.
Using a multimeter check that there is battery voltage on the positive terminal.
Check all fuses.
Check that the protection light is not illuminated. If it is lit, shut off the amplifier for thirty seconds and then turn it back on.
Protection LED Illuminates When Amplifier Is Powered Up
Check for shorts on all speakers wires. (i.e no speaker wires should be joined together and no speaker wires should be
touching the car’s chassis)
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The amplifier is designed to shut down automatically when the units temperature goes above 80 degrees. If the amplifier
feels very hot then this may be the reason for the amplifier not starting.
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Remove the speaker wires and reset the amplifier. If the Protection LED still comes on then the amplifier is faulty. This
damage may have been caused by either failure to follow these setup guidelines or abuse.
Amplifier Gets Very Hot
Check the minimum speaker impedance for the amplifier is correct. This amplifier is not recommended for impedance
loads below 2 Ohm stereo and / or 4 Ohm bridged mono.
Check for shorts on all speakers wires. (i.e no speaker wires should be joined together and no speaker wires should be
touching the car’s chassis)
Check that there is good airflow around the amplifier. In some applications an external fan may be required.
Blown Fuse(s)
Check both positive supply and ground for shorts.
Check that the positive wire is connected to the positive terminal on the amplifier.
Check that the negative wire is connected to the ground terminal on the amplifier.
Ensure that the correct rated fuse is fitted:
FLI Loaded 450s – 20 amp
Distorted Sound
Check the gain control is not set at too high a level. If the speakers sound distorted turn the down the gain until the
sound is clear.
Check that all crossover frequencies are correct. See Setup section for more details.
Check for shorts on all speaker wires.
Check all speakers are wired correctly. With the correct polarity being observed on each connection.
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