I would check your rca cables, I would make sure your ground is mounted on the frame. If none of this works try to find a friend who would let you hook up there amp or head unit. trouble shoot all your wires even the head unit. Make sure positive and negitive is right on your subs. good luck...
Check out sony explode sony mono amp. stay away from crunch its not a solid amp. I have one pushing 2 JL audio and the amp is not even turned up half way good luck.
I have the sony Explode mono amp it is 800 watts of power. it is pushing 2 JL audio 12's. When I bought this amp it cost me around 350. dollars. You can get it oline for around 160 now I promise you will not be disipointed. Scottaudio74