Kicker PT250 Manuel du propriétaire télécharger pdf (Page 7)

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 and gain controls, etc. There is a dual-stage PWR/

PRT LED on side panel of your powered enclosure denoting the power state of the ampliﬁ er. When the LED is

blue, this indicates the powered enclosure is turned on and its ampliﬁ er is functioning properly.

PWR/PRT 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.



Check for blown fuses.



Check the AUTO TURN-ON switch setting. Check for a DC offset between a speaker lead and ground if using

DC-OFFSET mode.

PWR/PRT LED blue, no output? Check the following:



audio input connections



Substitute source unit

with a “known” good source unit.



Check for a signal in the audio cable feeding the powered enclosure with

the VOM meter set to measure “AC” voltage.

PWR/PRT LED red, no output?



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.



A red PWR/PRT LED may also indicate 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.

No or low output?



Check the balance control on source unit



Check the ampliﬁ er input connections.



Check the polarity of the input signal connections.

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 through your vehicle—move it away from power cables.



Check the source unit for proper grounding



Check the gain settings and turn them down if they are set too

high



Check ground wire connections and make sure they are tightly connected.

Reduced bass response? Flip the phase switch to the opposite position; if the bass improves, your speakers

were out of phase with the subwoofer.

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. If you still have problems, run your input signal at speaker-level

from your source unit to the ampliﬁ er.

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 section

on the KICKER homepage, www.kicker.com. Please E-mail support@kicker.com or call Technical Services

(405) 624-8583 for unanswered or speciﬁ c questions.

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Kicker PT250 Manuel du propriétaire Page 7

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