I didn't make the box myself, bought it at some "stereo corner store."

I also called several places, here is what they told me:

1.) pushing the amp too much and the subs can't take it, which is why they are distorting

2.) bad box

3.) bad subs

4.) bad wiring


???????????????????? -----ugghhhhh... i love having my system in my car but when problems come up i hate it.