I knew IT!!!! 
Man, I thought with the driver specs and overall design I saw, this guy would be a monster for sure.............but not of this magnitude!!! HOLY SMOKES!
http://www.epiksubwoofers.com/News6.html
freq - SPL -- Distortion
62hz - 113.5 db - 0.7%
50hz - 110.8 db - 1.3%
40hz - 112.5 db - 2.6%
32hz - 115.5 db - 2.6%
25hz - 112.3 db - 4.1%
20hz - 109.3 db - 6.0%
16hz - 104.7 db - 11%
12.5hz - 103.8 db - 3.4%
Max SPL at 32hz: 115.5dB
BW uniformity: 98%
Average SPL (25-62hz): 112.9 dB
FR @ 2m GP: 26hz to 125hz +- 3.7dB
man, gimme a commercial sub under $2k that will produce those numbers and you got my attention!!! Of course, DIY is a whole different story!
