Recently finished my little project room. A 2300 sq. foot house and I get a room 6'wide, 9'deep and 8' tall.
I have 9 2x4x3 Rockwool panels in here. It sounds great, Have my ears at 38% position and I am so surprised at the lack of eq I have to use now. Used to think is was a software problem, oh no, can't believe I waited so long to treat a room.