A great sub made even better with the addition of polyfill. This thing will shake any small-medium sized room! This was an awesome sub when I first it with two caveats: 1)Somewhat boomy 2)Very big By lining the insides with spray adhesive and polyfill, I was able to tighten up the bass considerably. Obviously, you are dealing with a 15" woofer, so not much can be done about the size. Try to keep that in mind. My asking price is $150 plus shipping from Boston, MA. I'm also willing to consider any reasonable offers.