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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 KX 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 or an illegal
load. 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 around
the amplifi er.
Amplifi er shuts down only while vehicle is running = voltage protection circuitry is engaged.
Voltage to the amplifi er is not within the 10–16 volt operating range. Have the vehicle's charging and electrical
system inspected.
Amplifi er will only play at low volume levels = short circuit protection 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.
No or low output?
speaker output connections.
Alternator noise-whining sound with engine's RPM?
Check the routing of RCA (or speaker input) cable
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.
6
2013 KX Stereo Amp Rev C.indd 6
2013 KX Stereo Amp Rev C.indd 6
Amplifi er is very hot = thermal protection is engaged. Test for proper
Check the balance control on source unit
Check the RCA (or speaker input) and
Check for damaged RCA (or speaker input) cable
Check the source unit for proper grounding
Check
10/24/2012 4:54:30 PM
10/24/2012 4:54:30 PM
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