I put it in about 1 month ago and was getting noise when the car was on. I talked about this in another thread, but it was lost when the server went down. Today I turned down the gains from 75% to about 30% for the front and rear. Problem solved, no noise what-so-ever. I couldn't belive it. Before I would get clipping at around 60% on the head deck. Now clipping is around 95%. The sub is a free air 12". For bass duties it's okay. My impressions are that the rear trunk muffles a lot of the bass, meaning with the trunk open the bass is a lot louder from outside the cabin. With the rear arm rest down bass spl is improved a bit (noticable), not dramatic at all. maybe its getting 100wrms and the sub is rated for 150wrms. It's easy to make the sub clip (which is bad). hmm. I'm not looking for bass (car shaking), I don't get it. A lot better than stock, it's like a nightclub in here. All road noise is suppressed and the music is clear. I did all the work myself, total time maybe 80 to 100 hours. I hate the 4 picture limit per post.