I ran into Dr. Hsu (the subwoofer guru) at my local Home Depot today. Very nice man, very polite, but younger than I would have thought, given his exalted, Yoda-like status in the audio community. During the course of our brief conversation, he mentioned that he was about to come out with a 15" sealed port sub that would do 10 kh. 10kh? Sealed port? I was so flummoxed by this revelation that I neglected to ask him the dozen or so questions that came to mind the second he left. So, I'll throw the questions out to you guys: how does one get 10 kh out of a sealed port design? What kind of monster amp would it take to accomplish this? Would the enclosure be bigger or smaller than a Yugo?

Any and all theories would be welcome.