to start off i have a 12 in the car....it was playing well for a long time then all of a sudden it starts to fade in and out....when it does fade in the shit sounds like a blown speaker...so i changed the speaker...same problem...now i change the amp...its playing good for a bout 10mins...soon as i start driving it fades for a few seconds and cuts off...now it wont cut back on...with the old amp it would still play, just sound fucked up....HELP!

 

what amp?? how many watts??? what speaker?? what the rms??

 

Take a voltmeter and see what you have coming off the alternator at the battery.

 

check ground wire and make sure you got a good ground .whatever size gauge wire go in + should aslo be the same size - wire and check what the above poster stated. when you amp fades does it turn off or go into pritection mode ? if it doesnt turn off or go into protection mode then its your rca's.if it does cut off it could be a bad remote wire,ground or a bad + lead .

 

my homeboy took the voltmeter and put it to the red power wire...it gets no reading...new wire im guessing

 

Does he know how to use a voltmeter?

 

yea...thats what he said...he put the red volt shit on the power wire where it screws to the amp...then he put the black volt shit on the ground...it read 0....

 

Fuse maybe? I've had those round fuses actually break at the end, where it connects. It may not look blown. I would try a fuse first anyway. Or use the voltmeter to find out where its losing power.

 

does it just fade when the bass hits?? or just at random points with no bass?
i had the same problem when i had 2 12s running off a 500 watt amp.
everytime the bass would hit it would go into protection mode. play around with all the levels on the amp and see if it still fades out. if so youre probably putting out too much power for the wires, battery and such to handle. as stated before check your grounds, other wires, etc.,
or it could be something as simple as a short.
check for any exposed wires! thats another problem i encountered that made the same thing happen

 

say i go out and start the car now...after it hasnt been driven for a while...the music will play..the sub will play...as long as its low....then if i turn it up a lil...not even blasting it...itll just shut off...and sumtimes it wont cut back on unless the car has been sittin for a while...