I recently purchased the 8 inch Bolt sub woofer from Raw Acoustics. This sub comes in kit form or fully assembled. It has a one cubic foot cabinet, an 8 inch Tang Band driver, and a 100 watt plate amp. I also included a 10 inch passive radiator as an option. I use this sub for home theater in a 12 x 20 room. I was apprehensive that an 8" sub could provide a lot of bottom end for home theater. However, I was very impressed with this sub and it sounds like it should be much bigger. The sub also sounds great with music DVD's and CD's. Fantastik sound for the money and it doesn't take up a lot of space. Easy to build also. Not affiliated with the company, just a very satisfied customer.