Speakercraft makes a "Time five" model that mounts flush in the ceiling and is motorized. It drops down, pivots into position and can be set at different degree angles. They can be set for about 15, 30, or 45 degrees if memory serves. Also for different seating locations. I've used them in an install, they are pretty cool. Not what I would choose myself, but if someone insists on trying to hide speakers, its not a bad option. If you want to know anymore, shoot me an email.
Help fellow AV designers
I have a client that wants her home theater to only show the screen (probably a 55" LED)even though it is a TV rm. What are the best sounding speakers that are practically "invisible"? They currently have some cheap flush mounts in the front wall just under the ceiling (so much for hearing any highs huh). They have(3)flush mounts in the ceiling for the effects. I have recommended going to a (2)channel design but may not succeed unless I can come up with an alternative front pair of speakers that she likes the looks of. They would have to be tiny and she is against seeing a sub. She is a minimalist and likes a clean look. I can install the system in a cabinet behind the TV wall in a Study. Any help is appreciated.