After reading the forum about this software, I had to give it a try.
My room is 12.5' X 14.5' and I currently run a 5.2 setup. I'm thinking about adding a FBD eq. Here is a few graphs using 1 and 2 subs.
Here is one sub taken from my side seating position:
One sub from the main seating position:
Two subs from my main seating position:
You can see by using one sub the suck out at 28 and 55hz from the main seat is pretty bad.
What's my next step?