While I'm not technically as proficient as a lot of the people in this thread, I do have experience with the MWT's in home theater without a center, and with Audyssey.
As mentioned before, if there is hole in the image, they are too far apart. If too close, they sound like a single mono source. Best thing about Ohm's is there seems to be a lot of wiggle room.
With room correction, even the basic Audyssey worked quite well, especially in taming some shrill highs in a cavernous room we had last year.
However, I thought that old-fashioned experimentation and basic room treatment gave even better results. I definitely have more detail and soundstage without the room correction.
As mentioned before, if there is hole in the image, they are too far apart. If too close, they sound like a single mono source. Best thing about Ohm's is there seems to be a lot of wiggle room.
With room correction, even the basic Audyssey worked quite well, especially in taming some shrill highs in a cavernous room we had last year.
However, I thought that old-fashioned experimentation and basic room treatment gave even better results. I definitely have more detail and soundstage without the room correction.