eclein,
As Tonepub has stated, the MLs need to be away from the rear wall (at least 3 feet), as they are bi-pole radiators, music comes out of the back of the panel as well as the front, and they need the rear space for the reflected sound to develope. They also need to be fairly far apart as I discovered last night (after owning them for 11 years) and that is an interesting topic (for another thread).
Wayner