Besides, do Atmos speakers need to be in ceiling?
When installing two speakers as Dolby Atmos channels the speakers should be almost directly overhead and, in this case, any ceiling speaker with a reasonable sound dispersion can be used. In-depth information can be gained from Dolby's website here.
Subsequently, question is, how far apart should Dolby Atmos ceiling speakers be? For the home version of Atmos, the Dolby install guide recommends spreading the height speakers as wide apart as your front L/R speakers (180cm). That should be enough to hear left-vs-right separation above you.
Accordingly, should Atmos speakers be in front or back?
The speakers should be placed so that they are firing straight forward. They should NOT be angled toward the center of the couch. The surround effects are supposed to be slightly more diffuse.
How many ceiling speakers do I need for Atmos?
For Atmos systems, Dolby recommends using four in-ceiling speakers. One pair located in front of your listening position, and a second pair behind it.
