Yeah, I know, the wire looks bad, but I haven't got around to hiding it in the wall!  I will soon, but for now, the homemade sub-woofer is thumping along nicely. To be honest though, it in nothing compared to my Klipsch, as far as quality of sound, but between it and the subs in the platform, they add alot of thumpage to the room, and it would be the same without them.  It was a great way to put my old reciever to use and I would recommend it to anybody else.
Passive Sub-woofer