Room acoustics is a step by step process. You first select the room size to match usage. These two variables must align. Too much energy, too small room, too many problems starting with frequencies below 100 Hz. Take your intended usage and measure maximum frequency and amplitude that will be going on inside the room. Using drums and bass guitar? Make sure you have 13′ + ceilings. make sure you have 21′ widths minimum and if you can at least a 27′ length. Your room must be able to manage the excess energy. You can help it do that you must match usage to volume or size.