Thanks for the response. I am still coming up the learning curve. This is particularly true for what amp I would use. Right now based on what I have researched so far, I am leaning towards 4 Fi 18"ers perhaps 2 innies per manifold. I am planning on blowing out my family room wall into the backyard for a dedicated HT (10x16 wall). It's gonna cost me a kitchen remodel but that's a fair trade. ;D So theoretically I could plan for 2 false walls, one for the IB and one for the AT screen and LCR speakers. Vas could approach or possibly equal 10X. On another note, I have a set of sealed Statements and also a complete BOM for an LCR set of QSC SC-2150 Digital Cinema speakers which have a BR cabinet. Are there any issues with integration with BR cabinets? Let me know if I should move that question to a different forum.
Is the 10'X16' the 'net' interior dimensions after accounting for the false walls? Or are they going to make the room even smaller?
I don't see how anyone could use speakers like the SC-2150 in a smallish room. My experiences with prosound speakers is they like to be driven hard, and sound best a fair distance away from the cabinets. For example, the current system in my family room uses a BMS 4540ND mounted in a DDS ENG-1 waveguide (with Gedde's type foam plug). This combination sounds best starting 20' from the baffle.
Regarding integrating ported boxes with IB subs, it's not a problem as long as the XO point is above the Fb of the port
Sorry, I should have been more clear. 10' by 16' represents HXW. Room will be approximately 24' in length irrespective of any false walls. Hopefully, having 4 Fi 18's behind an AT screen won't be problem. Screen will be approximately 12' from first row, so SC-2150's would have to integrate by then, if not, I've got the Statements. I am planning on having an additional false wall for the IB behind the AT screen. The DBA approach looks interesting. Has anyone here tried that? I was hoping to go ahead and buy the drivers now before prices change which is why I inquired about which version to go with 2 or 4 ohm. I will likely go with the flow and go the EP2500 route for an amp.