The auction is for a used EAW SB250 subwoofer currently in a small performance/recording venue.  This is a smoke free environment and the speakers are in excellent shape.  It can be paired with the EAW UB82 Speakers that I have for sale to create a great small venue system.  Technical specs at EAW's site - http://www.eaw.com/products/SB250z.html   Please make sure of your shipping cost before purchase.  This is not a light subwoofer.  First picture is factory pic, second is of the speaker in it's currently installed space.