A π cornerhorn is a design that uses a room corner as a very large horn. The room's corner expansion is purely conical for the first eight feet, and the expansion then becomes parabolic. The transition from conical to parabolic happens when the ceiling is taken into consideration, so this eight foot figure is taken from ceiling height. There is a little more on this in the post called "Room corner characteristics."Other cornerhorn designs have folds that make a narrow throat within the cabinet, and a final flare that is formed by the rooms corner. The π cornerhorn design is very simple. The horn is deleoped solely from the room corner, and there are no folds within the cabinet. This provides a conical horn and provides directional eighth-space advantage. It is a simple design that works very well.