Just thought about this thread. To avoid confusion, I do NOT own a Ep800... at least yet.
I just finished a good 30 minutes of listening of pipe organ on SACD, and there was quite a few moments when I could feel the note, but could not hear it (below 24hz). I have an EP500; I can only imagine the depth of harmonics on the pedals that sub must be able to reach!
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E = MC2 = ( ( 2xM80 + 2xVP150 + 4xQS8 ) / EP-500 ) ^ ( A1400-8 x D2v )
Audiobytes! And then 2xM22s!