If you use the short wall, find the area on the side walls where the sound is reflected from. This is the spot on the wall that you would be able to see the speaker on that side in a mirror from your listening position. Place a large plant or some kind of furniture that will diffuse the sound instead of room treatments.
If you cant use a rug or carpet, you might not be able to tame the brightness caused by floor reflections. Maybe something you could roll out when you want to listen?
Good Luck
If you cant use a rug or carpet, you might not be able to tame the brightness caused by floor reflections. Maybe something you could roll out when you want to listen?
Good Luck