I have a RE MX12 that i got through some trading and dont really have any use for it. It has an underhung NEO magnet with a 4" voice coil and has a rms of 1500 watts (which is underrated imo) 22mm of xmax, and should work well in ported or sealed enclosures. Coils are in good shape, surround and spiders are also in good shape. The only thing noticable is that the previous owner lost a screw for the connector and replaced it with a screw. Mechanical 10/10 Cosmetic 9/10
This will out preform W7s, L7s, and such.
Link to one new $650
http://i448.photobucket.com/albums/qq206/rawlins1087/mx12.jpg
http://i448.photobucket.com/albums/qq206/rawlins1087/mx12-2.jpg
I can also build a custom enclosure for this subwoofer. Ported or sealed