music cutting out

Having an annoying problem. When i start my car or turn my system on, it will sometimes work perfect, and other times the music will come through. The times it doesnt come through.. i can hear the bass line perfect... so the amp and my two subs are running fine. my component set is connected to a 360watt 4channel amp. So every once awhile my sound wont come out of the speakers... i will just get bass, could this possibly be my head unit broken not putting out sound to my components or do you think it is my 4 channel amp going bad? if i turn it up full blast real loud i can hear the song fade in and out really fuzzy, and really quiet... i pulled my dash apart and took out my head unit and everything is plugged in securely. any ideas on the prob?Chris - 97 Toyota 4Runner

Alpine CDA-9884

Kicker SX1250.1

Kicker 15" L7

it  sounds like the amp or mabe a speaker is bad. but i would check the rca out put first . this can be done with a small amp. speaker from radio shack for about 10$bigb

almost definately the amp.   does it have any protection lights on it? car 1 = alpine 9807, mtx 404+mtx 311d, polk speakers, kappa 10"

car 2 = pioneer 7700, kicker 400x1, kicker 60x4, 10"compvr x2, kappa speakers

protection lights? it has a light... thats on when the amp is on... and its working..Chris - 97 Toyota 4Runner

Alpine CDA-9884

Kicker SX1250.1

Kicker 15" L7

Check the ground on your 4 channel amp

What could be happening, is that maybe you have a speaker lead grounding out. Hence the comment about the protection light. When this happens, it makes the sound naturally not come out of the speakers. Check the amp to see if you have anything that says protection, or a light that has never lite before. Also, when you system dosen't play, try to wiggle some of the speaker wires and see if you notice a diffrence. Maybe a fuzzier sound, or anything abnormal more than what you have. I think that the problem like I staited is that maybe you have a grounding speaker wire, or a faulty RCA Jack lead. Hope this helps~~jp