Bass can be better or worse on either. Just depends. Yeah, bi\/dipoles will sound more diffused and less focused. That’s pretty much why I don’t like them. Monopoles however when too close can hotspot and be distracting. So in a small bedroom bipoles can be an ok choice.\nFWIW surrounds and back\/rear surrounds are two different things. Rear surrounds are used in a 7.1 system.\n\nFor me with a 5.1 system I was going to say that about the rear surrounds until I got to your post....when I saw the size of the room I was like oh...shoe horning that 7.1 in there...huh. It might just be a 5.1 system, just referring to the surrounds as "rear".