Wow, this thing is heavy. It weighs 56 pounds. Its a 12" Cast Aluminum 400 watt jbl powered subwoofer. So far it sounds great. I played through the pod racing scene in star wars episode 1 and the bass was incredible. I could feel it in my bones. I have a JBL pb12 stacked on top of it for extra punch. I will be posting pics of it soon on my website in my sig.