PerkAudio "House of Horns"
Point Source Stack
2 - 12 inch in a tapped horn arrangement in a manifold style cabinet with a rotatable horn for vertical as well as a horizontal orientation. The top cabinet is setting on a 2-15 inch manifold subwoofer in a vertical orientation to provide this point source arrangement.
15 inch front speaker for the main and a 12 inch in the back focused backwards and is set 180 degrees out of phase with delay to provide cancellation on the back side of this subwoofer that creates a cardioid pattern at the back side of the speaker cabinet and has some added sound in the front as well.