I have a very open room to work with and can place my Pioneer BS22 surrounds almost anywhere. My problem is knowing WHERE to place them. Should they be:
-At the sides of the MLP aiming at each other?
-Slightly behind and aimed forward at the front wall?
-Should they form a "box" or square shape with the fronts or should they be farther away to be equally far from the MLP?
Your help would be greatly appreciated as Google has let me down on my research of this tricky subject.
Your main listening position is in the center of the circle. The circle represents your listening distance (D), so the diagram is recommending that the distance between you and your side surrounds be the same as the distance between you and your mains (all speakers sit along the edge of the circle). Note that this is also true for the center speaker. How aggressive you get with toe-in will depend on your particular speakers and listening environment, but as a starting point, the diagram is showing everything pointing at the main listening position. You'll need to experiment with that to get the best results.