What do you mean by beveled? Looking at your pics it looks as though the edge of the hole for the speaker has an outward flaring bevel around the edge of the opening. That what you mean? I thought of that but not shown that way in the plans. According to the plans I have the fronts, which mount the speakers are flat, set in 1 1/2" to allow for the cleats (3/4") and 3/4" wide grill cloth frames. Speakers are rear mounted. I'm putting in a pair of 416-8A's, 806/511 horns and 511B xovers. Just what the specs call for. The materials cost $180.00 per box, and when I'm done they'll be brand new 612C's with the horn enclosure as part of the cabinet. Bass box will be to Altec spec.