Kicker KXM Série Manuel D'utilisation page 8

TROUBLESHOOTING
If your amplifi er does not appear to be working, check the obvious things fi rst such as blown fuses, poor
or incorrect wiring connections, incorrect setting of crossover switch and gain controls, etc. There is a
Protection (PRT) LED on the side panel of your Kicker KXM series amplifi er. Depending on the state of the
amplifi er and the vehicle's charging system, the LED will either glow red or be off.
Red (PRT) LED fl ickering with loud music? The red (PRT) LED indicates low battery voltage. Check
all the connections in your vehicle's charging system. It may be necessary to replace or charge your
vehicle's battery or replace your vehicle's alternator.
Red (PRT) LED on, no output?
impedance at the speaker terminals with a VOM meter (see the diagrams in this manual for minimum
recommended impedance and multiple speaker wiring suggestions). Also check for adequate airfl ow
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around the amplifi er.
engaged. Voltage to the amplifi er is not within the 10–16 volt operating range. Have the vehicle's charging
and electrical system inspected.
is engaged. Check for speaker wires shorted to each other or to the vehicle chassis. Check for damaged
speakers or speaker(s) operating below the minimum recommended impedance.
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No or low output?
and speaker output connections.
Alternator noise-whining sound with engine's RPM?

input) cable Check the routing of RCA (or speaker input) cable

grounding Check the gain settings and turn them down if they are set too high.
Ground Noise? KICKER amplifi ers are engineered to be fully compatible with all manufacturers' head
units. Some head units may require additional grounding to prevent noise from entering the audio signal. If
you are experiencing this problem with your head unit, in most cases running a ground wire from the RCA
outputs on the head unit to the chassis will remedy this issue.
CAUTION: When jump starting the vehicle, be sure that connections made with jumper cables are
correct. Improper connections can result in blown amplifi er fuses as well as the failure of other critical
systems in the vehicle.
If you have more questions about the installation or operation of your new KICKER product, see the
Authorized KICKER Dealer where you made your purchase. For more advice on installation, click on the
SUPPORT tab on the KICKER homepage, www.kicker.com. Choose the TECHNICAL SUPPORT tab,
choose the subject you are interested in, and then download or view the corresponding information.
Please E-mail support@kicker.com or call Technical Services (405) 624-8583 for unanswered or specifi c
questions.
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2017 KXM Stereo Amps Rev H.indd 8 2017 KXM Stereo Amps Rev H.indd 8
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Amplifi er is very hot = thermal protection is engaged. Test for proper
Amplifi er shuts down only while vehicle is running = voltage protection circuitry is

Amplifi er will only play at low volume levels = short circuit protection
Check the balance control on source unit
KXMA400.2
100 x 2 @ 4 ohms, 14.4VDC, 1% THD, CEA-2006B (Watts)
Signal to Noise Ratio -75dB CEA-2006B (ref: 1W, A-weighted)
KXMA1200.2
300 x 2 @ 4 ohm, 14.4VDC, 1% THD, CEA-2006B (Watts)
Signal to Noise Ratio -75dB CEA-2006B (ref: 1W, A-weighted)
KXMA400.4
50 x 4 @ 4 ohms, 14.4VDC, 1% THD, CEA-2006B (Watts)
Signal to Noise Ratio -75dB CEA-2006B (ref: 1W, A-weighted)
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Check the RCA (or speaker input)
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Check for damaged RCA (or speaker
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Check the source unit for proper
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