I finally got the imaging "just right" on the M5HPs by playing a bit with separation and toe-in. For M5's fairly widely spaced the best setup seemed to be with speakers toed in about 2/3 of the way between "straight ahead" and "pointing at the listener".
I imagine there is no way to play with toe-in with in-wall / on-wall speakers, so is the idea that you just keep the separation small relative to viewing/listening distance enough that straight-ahead works well ?
That seems to be the way that most systems I see are set up anyways by virtue of typical room and TV size - with speaker separation maybe 1/2 of the viewing/listening distance. My speakers are set up in a pure muic system and are quite a bit further apart - a bit over 6 foot separation and ~9 foot distance from baseline to listener.
Cam, what kind of distance & separation were you thinking about ?