For better or worse, I have a slanted ceiling. On the lower side, I cut a 1" x 4" board slightly bigger than my speaker mounts, painted them, and screwed to the rafters, then screwed the speaker mounts into the board.
For the "high" side, I have some very heavy duty swivel mounts (not sold anymore, for some reason) placed so as to put all height speakers on the same horizontal plane. These are lagged into the 2x4 wall framing.
All those speaker mounts allow for adjustment vertically and horizontally, and all 4 heights are pointed at the MLP. All speakers are enclosed cabinet speakers.
I did not try to fish any speaker wire through the walls, as I did not want to take down/replace any sheetrock, but instead used the largest rectangular cable concealer/raceways I could find, which will fit if you are careful, six 12 gauge stereo speaker wires. The raceways come with "sticky tape" that hold them to the walls, but they also came with drywall inserts and screws I did not use.
The raceways came in white, but are paintable. The kits had connector fittings for 90* turns, straight connectors, "T's" and corners.
For the "high" side, I have some very heavy duty swivel mounts (not sold anymore, for some reason) placed so as to put all height speakers on the same horizontal plane. These are lagged into the 2x4 wall framing.
All those speaker mounts allow for adjustment vertically and horizontally, and all 4 heights are pointed at the MLP. All speakers are enclosed cabinet speakers.
I did not try to fish any speaker wire through the walls, as I did not want to take down/replace any sheetrock, but instead used the largest rectangular cable concealer/raceways I could find, which will fit if you are careful, six 12 gauge stereo speaker wires. The raceways come with "sticky tape" that hold them to the walls, but they also came with drywall inserts and screws I did not use.
The raceways came in white, but are paintable. The kits had connector fittings for 90* turns, straight connectors, "T's" and corners.