I have recently come into possession of 2, 6' by 8' pieces of acoustic foam (free). I'm sure my room probably needs some help, but I'm not sure where to apply this, or even if it is the right thing for my room.
My room is 14' by 19'. My speakers are on the 14' wall about 3' away from back wall and about 2.5' in from the side walls.
My listening position is about 10' back with about 3' feet behind me.
All walls are hard surface and the floor is hard wood.
Not sure if this is enough info to go on, but if anyone has any wise words they'll be appreciated.
A lot of trial and error have gone into the positioning to get reasonable sound.