yah it stops while im driving i did buy a cheap cd player whick also can be the problem i think that the rca are drawing too much even with the bass at -4 or -6 it stops aat about 80 out of 100 on the volume. the cd player is a sound storm50x4 i bought it because it had front/rear/aux/sub outputs and was cheap i couldnt find a cd player with all that, that i could afford anyway.but before my new subs i had cheap 250 rms subs to the same amp amd had no problem my new subs are 600 rms and are now doing that.