I feel bad. I shouldn't have been that harsh. -But you are nutz. Here is my apology. Reset your room if you can. You can sneak your listening position ahead a bit, but dont go dead center width and length.
Your width modes are 44 and 88hz.
Your Length modes are 31 and 62hz.
Your height modes are 70 and 140hz.
Your modal distribution is good. Good dimensions. No stacking frequencies. Nice even spacing.
31 44 62 70 88 140
Now go get your subs! Put them on the front wall at the 3'3" to center of driver as described. These dimensions work for an untreated room (I assume your's is untreated.) EP500s will fit behind your towers using this plan.
