Problem with Kicker 2 Ch and protection light

[skrilla22 10+ year member]

Ok so here it goes, i'll make it short and sweet. I installed my Rsd's not too long ago with my Kicker KX450 2 Channel. Was working fine for a while, then I started getting a little noise from the right tweeter, like the wire was grounding out or something. I took everything out added some damplifier and re wired everything and relocated the crossovers because in the door they were collecting some moisture.

I got everything back in and installed and now i'm having some issues. When I turn the volume up past about 20 (Pioneer P390MP), the whole front stage cuts out, I turn it down and it comes back on. I also did this while watching the amp, and its like its working fine with the green light then it goes in protection mode, then back to green, and so on.

What could be the problem? I'm pretty sure its not the speaker wiring, because I wired the amp to the subwoofer and it did the same exact thing. Today I replaced every fuse, replaced the 300A under the hood with a 150A, replaced the inline fuse after the distro block as well, checked the amp fuses and those are good too.

I went to Car Toys and I told one of the guys and he came out to look and he said it's most likely my amp messing up.

What do you guys think the problem is?

Thanks in advance for your help.

People who don't read:

- Speakers and Amp working fine one day

- Rewired, relocated crossovers, replaced fuses couple weeks later

- Amp turns on fine, goes in protection mode after volume 20, turn it down speakers come back on

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[Supergumby5000 5,000+ posts]

this is common with kickers amps. they can get a bad solder joint someehwre on the inside, im not exactly sure where. I had the same thing happen with my kicker ZX350.2, and when it went bad, instead of my tweeter just making noise, it blew it. I had to send it back in and exchange it for a new amp.

 

[luvinthebass 5,000+ posts]

does that amp turn off when it clips?

 

[skrilla22 10+ year member]

I was thinking it was something wrong with the amp as well, however I hooked up my old MTX 2 Channel amp and it did not turn on as well.. I'm getting so frusterated, rawr.

Any more takers?

 

[valter 10+ year member]

Unhook speaker wires from amp and measure resistance on speaker wires. Then measure resistance between ground and speaker wires. May be something overloading amp.

 

[skrilla22 10+ year member]

ok cool thanks for the reply.. so just turn the knob to the little ohm guy on a dmm and stick the probes in the speaker wire?

 

[valter 10+ year member]

ok cool thanks for the reply.. so just turn the knob to the little ohm guy on a dmm and stick the probes in the speaker wire?

Yes. It's in no means an accurate test, but will show you if you have something seriously out of place. Should be no less then 2 ohms on speaker wires and infinity from any speaker wire to the ground.

Edit: Also try unhooking left RCA, then hit volume to 20... Hook it back, then right RCA, volume to 20.. That way you'll find a problematic channel.

 

[skrilla22 10+ year member]

ok cool thanks for the help i'll let you know how it goes tomorrow.. =o