Hello,
I currently have the ARC w/ 2 subs & 2 One SL’s for my home theater setup, used for tv/movies/gaming but not for music. I was wondering if the shape of my room would be OK to upgrade the back surrounds to Era 300’s. The TV with ARC is 14’ in front of the couch.
I think I would need to invert them on the wall but any feedback or ideas would be appreciated.

Side question - I currently have 1 sub to the left of the TV facing the couch and 1 sub placed behind the couch for some added bass feeling. Would it be better to have both sub’s by the TV (one left / one right) instead of the one behind the couch?