[sonic-man]

Great! Thanks for the info guys! Yancrazy, ...So i will start by moving the monitors closer against the wall because they are ~about 1 wavelenght[4'] away at 200-300Hz. and see if that alters the pattern.

I realize the ratio given for the null is 1/4 the wavelenght so there should be a null at somewhere around 66Hz. if my room were big enough. I still think the speaker to wall distance may be the culprit.

The other thing i can do is open 4 doors into an almost equal sized space on the other side of the back wall. Each doorway will act as a resonant trap i guess eh? So if i put damping i the door ways they could become collosal traps, right? something like that anyway. Ok, i'll try some stuff.

BTW - I found some nice fat US made moving blankets on the internet, and they also have extra plush ones for movie sets and recording studios. You get 12 80"x72" for about $125. They can put things in them for hanging. you ever tried these things? The good thing is they don't have to go against the walls so you can extend the damping to low frequencies.