Ok. So I just got my car fixed. Fuel pump died. Did it myself. So before that, I would jsut sit in the car and play my music (subwoofers). But now, it doesn't hit that hard anymore. I have a few questions I am wondering about. Could it be the battery not giving the amp enough power. Also, by ground wire had to be moved again, because the bolt I had it under fell inside the car. So I moved it to another bolt, which is screwed up, so I had to use electrical tape to make sure it stayed. Do I need to find a new place for my ground? I will probably need to get some new wire, considering my ground is only a little over a foot long (sisters ex is a d-bag). I'm jsut p-oed because I finally got mky car running and now my system is weak.