Ceiling speakers should only be used for Atmos.Yes. Thats possible. My media room is in the basement. Even though its a finished ceiling I can probably get someone to install in ceiling speakers for me. There is enough room between the beams of the first floor. What do you recommend?
Edit - To clarify, any kind of speaker can go anywhere really (you can ceiling mount towers for Atmos if you wanted to), but any channels that are NOT dedicated for the .2 or .4 Atmos should not go on the ceiling.