^^ yes, only with Audyssey subeqHT.
What you see at reference 0 MV is where my subs compressed. It compressed in the null region due to room mode that I cannot fix with 2 subs. Adding another FV15 or FV25 will more likely cure this problem; however, my normal listening level is -15MV with +8 bass hot (dynEQ off), so I am good with the pair.
On a side note that recently discussed here, adding a pair of the Behringer 1200d as MBM's to the back corners of my room with 2 FV15 in front corners will more likely smooth out that mid bass region along with the increase in chest slam tactile response. It seems to be a cheap and great solution for me being 99% movie.