Jax2, can you tell me what your main speakers are? That might help me come up with suggestions.
One possibility is to rotate the speaker-listener-speaker triangle perhaps 15 or 20 degrees clockwise or counter-clockwise, as seen from above. This will introduce asymmetry in the horizontal plane, and may reduce the depth of the 80 Hz dip.
What happens to the 80 Hz dip when doors are left open or closed? An open door can be a very effective bass trap, for better or for worse. Does the room have a closet? Try that as well.
I couldn't tell you why Earl favors white noise over pink noise; the latter is what I'd be inclined to use but Earl is one very, very smart guy so he probably has a good reason.
One possibility is to rotate the speaker-listener-speaker triangle perhaps 15 or 20 degrees clockwise or counter-clockwise, as seen from above. This will introduce asymmetry in the horizontal plane, and may reduce the depth of the 80 Hz dip.
What happens to the 80 Hz dip when doors are left open or closed? An open door can be a very effective bass trap, for better or for worse. Does the room have a closet? Try that as well.
I couldn't tell you why Earl favors white noise over pink noise; the latter is what I'd be inclined to use but Earl is one very, very smart guy so he probably has a good reason.