CECAA850:I don't know how you're planning to affix the speaker to the mount. Screws maybe? If so, the mount only gives you 10 degrees of tilt. Will that be enough?
And that's where the compromises of a mount like this come into play. I'm not sure if 10 degrees will be enough, but in addition to tilt being limited, it's also a fixed distance from the wall as well. Suppose I need it to be closer to the wall or further away?
I think I may look into having a few painted 2x4s and a piece of plywood mounted to the ceiling at exactly the specifications needed, both distance from wall and angle to seating.
Unfortunately having the height of the tweeters across all 3 mains be within 18" isn't doable unless I have an AT screen. I neither have that, nor do I really want it. But having said that, the tweeters would be closer to that rule of thumb if I kept the RC7 below the screen.
Rick