In-Wall Surrounds : Installation Height

I have two systems with in-wall surrounds. Each has different ceiling heights as well as one room having an open wall to the adjacent room. In both installs the surrounds are placed at 3/4 of the way up from the floor, with the tweeter at about 2 feet down from the ceiling. Sound is full and cohesive throughout pans on HT and music tracks.

Yes, in both instances I managed to end up with the middle of a dipolar array of tweeters falling at 24" from the ceiling, and 24" from ear level. However with your Paradigm CI Elite E80-IW surrounds being monopole this should also translate.