Question about Kicker (ZX750.1) Car Audio Amplifier

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Red light on Amplifier

I have ZX750 kicker amplifier powering my two 12" Kicker Subwoofers and a MTX 400 watt 4-channel amp powering my four door speakers. Everything in my system was working fine for a couple weeks after I got it installed, but then my subwoofers started to make a clicking noise and slowly died out. After the subwoofers had died out, my door speakers began skipping until they also had stopped working completely. I checked all the connections and wiring and everything seems to be in place, the red light on my Kicker amplfier has turned on and my other MTX amplifier will not light up anymore when i turn on my car. I think it may be a blown fuse but i checked both the fuses on both of my amps and they are not blown. What do you think the problem could be? If it is a blown fuse, which one should i check?

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  • Anonymous Jan 30, 2008

    the green light on my kicker ZX400 amp will not come on even when the car is was working fine then it just stopped working



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If your amplifier has the internal Kicker card dealie "little computer card on the side that you can change out crossover settings and such," Turn off the vehicle, remove this device and make sure the contacts on the card are clean and free from black soot (showing a spark). clean the contacts with a pencil eraser or something hard but soft... and put the little card back in place, start the car again and see if that helps, I used to lose one speaker every once in a while with the same amp. I ended up replacing the module with a different one from my dealer and it worked fine (still does and it's been in my car 6 years). Check that little module. if this doesnt work, while the car is running and the music is "playing" wiggle the card and see if it works sometimes and not others. Likely is the little module.

Posted on Aug 15, 2007

  • Ashley Sinclair
    Ashley Sinclair Aug 15, 2007

    beyond that, Check your Ground cables, make sure they're ok. if they're not good, you may have "grounded through the deck" (all amplifier power has no ground and finds the closest one through your cd player, if that happened, you will need to replace your deck... try disconnecting your RCA wires and see if your power lights go out, if they do, you have a problem, see an expert.



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