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SOLID AMPLIFIER
User manual
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Troubleshooting
1) The LED indicator on top of the amplifier is off:
• Check that there is a DC voltage of 10.5 to 15.5V at the amplifier power supply connector.
• Check that there is a DC voltage of 10.5 to 15.5V at the battery positive terminal. Check the quality of the connections of the two wires
of the amplifier, the audio source, the battery and fuse box. Repair or replace if necessary.
• Check the fuse(s) of the battery positive wire.
• Check the fuse{s) situated on the sides of the amplifier.
• Check that the ground connection is properly implemented on the vehicle chassis, and that it is on a clean metal surface (without any
trace of paint or varnish).
2) The LED on top of the amplifier is on and red:
• Turn down the amplifier and the source (head unit).
• Turn on the source (head unit) and the amplifier after waiting for its upper side to cool down.
• If the dysfunction persists, go to step 3).
3) Checking of the amplifier audio connections
• Check that the RCA input or high-level connections are correctly made on the audio source as well as on the amplifier. Make sure that
the wires are not twisted and that they are not cut.
4) The amplifier turns on then off
• Check that no speaker wire touches the vehicle bodywork (ground point).
• Turn off the audio source and the amplifier. Unplug the speaker wires and test the speakers with a multimeter adjusted to the impedance
measurement to make sure they are working correctly.
• Carefully touch the amplifier to check its temperature. If it is high, the amplifier is in thermal protection mode and must cool down.
• Check the voltage of the
+
BAD wire.
If
the voltage is over 15V or below 10.5'" refer to a specialist in car electrical systems.
5) No sound on one channel
• Check the wiring of the amplifier and of the audio source.
• Also check the balance (audio source), then check the speakers with a multimeter in order to make sure there is no short-circuit.
6) The sound level is low
• Check the setting of the potentiometer (volume) of the audio source and the input sensitivity of the amplifier (gain).
7) The amplifier stops after a long working period
• Check the color of the LED indicator. If it is red, it means that the amplifier is probably in thermal protection. It reveals a bad cooling due
to an improper positioning of the amplifier.
• If the cooling is good, check the speaker impedance in order to make sure it is compatible with the amplifier capacities.
• If that is the case, make sure that the battery positive terminal of the vehicle delivers a voltage between 10.5V and 15V Also check the
correspondence of the wire gauge with the recommendations.
• Check that the fuse of the fuse-box situated next to the vehicle battery is suitable to use.
8) Noise increasing with accelerating vehicle
• This is a ground loop phenomenon. To check if this noise is caused by an incorrect grounding, switch off the amplifier and the audio
source, then remove the amplifier RCA wires (ensure that they are shielded and are not touching the chassis once disconnected). Turn
on the amplifier and the audio source.
• If the dysfunction persists, it is a grounding problem. If it disappears, the problem is due to the RCA wires being either damaged or too
close to the power wires. It is thus necessary to change and place the RCA wires opposite the power wires.
• In the event of a grounding problem, ensure that the ground wires are correctly connected and that the quality of the contacts is good (no
paint or varnish on the grounding area).
Once all these verifications have been undertaken and if the amplifier still does not work, contact your nearest Focal distributor.
Guarantee
In the unlikely event of any problem, please contact your Focal retailer. Outside of France, all Focal speakers are covered by the guarantee
drawn up by the official Focal distributor in your country. Your distributor can provide all details concerning the conditions of guarantee.
Guarantee cover extends at least the legal minimum period in force in the country where the original purchase invoice was issued.
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