Is the sound going to "slip through the crack" between the screen and the side wall? Of course it will, but there will be a significant portion of the sound field generated by the speaker that will bounce off the side wall, the sloped ceiling, and the back of the screen. You avoid most of the problems associated with those issues by moving the speakers up to the same level as the screen and toeing them inward.
If you are worried about the entry door in this scenario, then put the screen on the opposite wall.
It's a VIRTUAL channel unless stated otherwise.
Last edited by RayGuy; 02-12-2020 at 03:17 PM.