I currently have an all SuperSat3 5.1 speaker setup in my basement and will be adding 2 more SuperSat3 speakers on the side walls for Dolby Atmos. In-ceiling speakers will not work as I have ducts in the ceiling on the right-half of my basement, so half of the basement ceiling is lower than the other.

My questions is how/where I should mount them? Do I mount them flat on the wall, or should I use mounts and angle them towards the listeners?

On a previous post, the moderator answered that the Atmos website had an example for this setup, but I can only find examples for 5.1.2 overhead mount, or 5.1.2 Atmos enabled speakers.

Thanks.

If you can wall mount and angle them toward the MLP you might let room correction dial them in. If you like it then, all is good. Otherwise, tweak from the settings room correction set.