Carl, it was a Definitive supercube I got from you. That went to WVSteve who bought it for his dad. I'm kind of fooling around with the idea of running 1 or 2 Infinity kappa perfect 12" subs. They are great woofers that claim to hit 18hz, can work in a small box, and are 94 db efficient (although I'm not sure how driver manufacturers make these specs for a raw driver). I would eventually like to run a stereo pair of these at relatively low power. They should be able to play very deep without exerting themselves very much, which I think would make for a very nice sounding, almost distortionless sub-bass set-up. The WTB ad for the box and amp is just for me to screw around with one of the drivers before I go and start building boxes.