I was at T.H.E. Show yesterday ( a "next door" CES competitor) and wandered into the Hsu room. Oh my goodness! They were demoing a new prototype sub stated to be flat to 10Hz and, after the demo, I believe it! Organ music with 16Hz pedal stops cleanly heard and felt. All the usual suspects for demo scenes - plane crash from "Flight of the Phoenix", tank tap from "Nemo", etc. hit with a physical force that I've never felt before. It was a unbelieveable display for a less than ideal hotel room set-up.
I couldn't pry any info from Dr. Hsu or other company reps as to driver size, eq, price or availability. There were 2 in the back of a very dark room and I would guess that the enclosure was about the same size as the VTF-3. Needless to say, I was impressed. I'm going to check it out again today...
"What happens in Vegas..."