bigjohn, I tried the large setting and not surprisingly, my un-audiophile ears didn't catch any improvement. Fact is, small and the SVS sounded better to me.
On another note, I believe you have a room only marginally smaller than the State of Texas. While spiff rightly hawks the HSU STF-2 as a good sub, you may be well served to call the folks at HSU and SVS. You will find them very similar to the Axiom staff. I believe that you will need a more robust sub than the STF-2. I'm thinking the STF-3 or the SVS 20-39 PC+. You need to fill alot of space. They will really help you with the selection. The guys at SVS actually sold me down to my 20-39 PCi (I had a PC+ in mind). And keep in mind that excellent audio doesn't need to be inexpensive. (I'd double the hints to Shannon)
