Well, the new Tempest X2 is up and running. I have the pics over here: http://www.hometheatershack.com/forums/exodus-audio/23815-tempest-x2-5-cubic-feet-sealed.html if anyone was interested.

So far, it is doing great in my room. I never could get a 20hz tone to register on the Radio Shack meter with the BIC F12, but the Tempest easily puts out 20hz and lower (measured to 17hz about 12dbs down).