My larger room is L shaped, approximately 20' base and 30' length.
The F5s in that room have a three way adjustment for room size (small, medium, large) to fit them to various room sizes that other non adjustable models are designed to go into (plus 3 other 3-way tone level adjustments). I find the medium room size setting works best in this room. Set to "large", the bass becomes just a tad overpowering and tends to mask details in the lower midrange a bit.
The F5s in that room have a three way adjustment for room size (small, medium, large) to fit them to various room sizes that other non adjustable models are designed to go into (plus 3 other 3-way tone level adjustments). I find the medium room size setting works best in this room. Set to "large", the bass becomes just a tad overpowering and tends to mask details in the lower midrange a bit.