low bass note problem

i am having a problem that is driving me nuts every 6 months i have to replace my crossover it is a kicker x3 because it starts to kill the very low notes i am running a bp1200.1 on my subs and a alpine head unit  when this starts to happen i disconnect the crossover and use the radio crossover it works fine but i am tired of replacing crossovers what could be the problem

i am starting to think the amplifier is bad because the crossover works fine with my friends system he just tested it in his car a few minutes ago when i put it back in my car the low bass notes get cut off and the amp goes into protection mode off and on i turned down the gain and it stopped going into protection mode but the amp wont get very loud at all until i bypass the crossover and use the radio built in one

i tested the speakers in his car they work very good no problems

The gain is not a volume knob - set it properly and you might fix your problem.VEHICLE: 2002 GMC Sonoma ZR2

Alpine CDA-7940

AudioControl EQT x2

JL Audio 1000/1

JL Audio 10W6 (originals) x3

Kicker ZR120

Kicker ZR460

Polk GXR-6 x4

Polk GXR-4 x2

derrickg wrote: i am having a problem that is driving me nuts every 6 months i have to replace my crossover it is a kicker x3 because it starts to kill the very low notes i am running a bp1200.1 on my subs and a alpine head unit  when this starts to happen i disconnect the crossover and use the radio crossover it works fine but i am tired of replacing crossovers what could be the problem

What kind of crossover are you using?  Plus this does sound like a gain problem to me too.

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kicker x3

You're using a Kicker KX3 electronic crossover and you keep blowing it up?  How in the world are you doing that, and what makes you think the Xover is failing?  Do you have the bass boost on or off?  How did you set up the three output level controls?  Did you match your amp input gain to the Xover output and set the Xover output level to match the HU output?  Is your signal clipping?  What sub are you using and what kind of enclosuer?Support the12volt.com

well i just found out that it wasnt the crossover it was the amplifier i put my friends amp in and it slams i was having voltage problems too with the car running the voltage was at 14.8 i turned the amp on full blast voltage was dropping to 12 then 11 the deeper the bass got i am running 4 10 inch pioneer premier subs 350 watts rms each 4 ohm dvc what would be a good amp for this application my friend had a boss 3000 digital