Kicker KEY Série Manuel D'utilisation page 10

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 are Power (PWR)
& Protection (PRT) LEDs on the side panel of your KICKER KEY series amplifi er. Depending on the state of the
amplifi er and the vehicle's charging system, the LEDs will glow either green or red. When the green LED is lit, this
indicates the amplifi er is turned on and no trouble exists.
Green LED off, no output? With a Volt Ohm Meter (VOM) check the following:  +12 volt power terminal
(should read +12V to +16V)  Remote turn-on terminal (should read +12V to +16V)  Check for reversed
power and ground connections  Ground terminal, for proper conductivity.
Green LED on, no output? Check the following:  RCA connections  Test speaker outputs with a "known"
good speaker.  Substitute source unit with a "known" good source unit.  Check for a signal in the RCA cable
feeding the amplifi er with the VOM meter set to measure "AC" voltage.
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?  Amplifi er is very hot = thermal protection is engaged. Test for proper
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 6–16 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.
LIMITER LED on?  Input signal overdrive or gain set too high: Reduce the gain or the strength of the input
signal.  Thermal protection engaged due to heat sink temperature. Keep amplifi er in climate controlled cabin,
away from direct sunlight, or in a better ventilated area.  Low input voltage (+12V line): Check your power
supply wires and battery voltage.  Compression switch is on: If not desired, turn the compression switch off.
No or low output?  Check the balance and fader controls on source unit.  Check the RCA (or speaker
input) and speaker output connections.  If using a Low-Level signal, make sure Radio Detect is OFF.  Check
the volume level on your source unit, to include the volume level of any connected phones or MP3 players.
Alternator noise-whining sound with engine's RPM?  Check for damaged RCA (or speaker input) cable
 Check the routing of RCA (or speaker input) cable  Check the source unit for proper grounding  Check the
gain settings and turn them down if they are set too high.
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.
10
KEY180.4
45W x 4 @ 4 ohms
Signal to Noise Ratio -75dB CEA-2006B (ref: 1W, A-weighted)