Quote Originally Posted by TbM View Post
If you have checked all the wiring the only thing i can think of besides the headunit being faulty is the speakers might be too low ohms for the headunit, IIrc if they are too low for the headunit they will over drive the amp in the head unit and cause it to over heat or go into over current protection.
My thoughts exactly...
Does sound very much like the headunits amp is going into protection...
Also, the word you are looking for is coax speakers.. the ones with the tweeter on them, instead of seperate.

I'd rip a door card off (by rip I mean pull off gently) take out a speaker, and look for a model number... research. if they are 2ohm model... that is probably the reason... else, maybe the headunit isn't getting enough volts?
Does the headunit turn off when it happens? or is it just the speakers turning off?
If the headunit does turn off, if you leave it for a bit, does it come back on by itself? like if you turn it down? or does it stay off?