Tim,
What an awesome air moving machine you have there. Fs = 12Hz !!!!!!
Look, the manufacture is indicating that a Vb = 12.04 cu/ft box, will
produce an (F3) = 28.10 Hz. Note; I got the same results, but in a
10.45 cu/ft box.
From a music listening standpoint, the low B, of the 5-6 string bass
will sound very full. For HT... while you'll have the benefit of the slower
(2nd order) roll off, those infrasonic special effects will be a little thin,
about 7db down at 20 Hz. You'll still perceive it being there, but the
house won't, completely, come off the foundation. Maybe that's a good
thing.lol
You didn't provide mechanical or electrical Q values (Qe, Qm) which are
important inputs for calculation. Without those values I still generated
a ported box of monsterous proportions with a Vb of 19.7 cu/ft, using
a 6" diameter port (Dv), 11.45" long (Lv). Way too big, of course, but
you will achieve an F3 = 18.71Hz.
Explaining, that you have 2 (Bridged) Bryston 4B's (wow!!!) for the
mains, I now understand your set-up better. The Adcom (GTP-600)
pre-amp supplies the Brytons and the Adcom (555/11),soon to be
used as a dedicated sub amp via an active X/over.
Any quality, active 2 way x/over will effectively bi-amp your system.
The signal leaving the pre- amp will be divided: low's going to the
bridged Adcom and to the sub, highs going to the bridged Brytons,
and to the mains.
You are putting together something to behold.
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