Rocadanny,
What you probably did was to attenuate the tangential room mode. The nasty thing about tangential nulls is they line up along the center line of a room - so you get a null right down the middle of the length of the room no matter where you sit. Treating corners helps with this too.
What you probably did was to attenuate the tangential room mode. The nasty thing about tangential nulls is they line up along the center line of a room - so you get a null right down the middle of the length of the room no matter where you sit. Treating corners helps with this too.