Up for sale, my excellent condition Boston Acoustics MSubwoofers. I have two of these, so the price is for one. I will take offers if the buyer purchases both. The subs were used in a infrequently used home theater setup.
From the BA website: 10-inch woofer and two 8-inch passive radiators to play rich bass with very little distortion. A built-in 500-watt power amplifier can provide up to 1,000 watts of peak output when needed.
All spec info can be found here: http://www.bostonacoustics.com/US/Product/Pages/ProductDetail.aspx?CatId=HomeAudio(BostonAcoustics_US)&SubCatId=MSeries(BostonAcoustics_US)&Pid=Msubwoofer(BostonAcoustics)