Thought you guys may be interested in this:
It's a Rythmik Audio DS-15, Sealed, with an AS370 12dB/Octave Amplifier - very nice!
I've spent the last 3 months, almost, building it but it's been worth it. Of course, rather than go for a boring black box, I dressed it up a bit - behold the Rubik's Cube Subwoofer...
[url=http://projectcube2007.blogspot.com]Project Cube 2007[/url]