Patent ID: 7556122

Claim:
In a horn loudspeaker adapted to be operated in a corner formed by three mutually perpendicular surfaces, an enclosure comprising: a plurality of baffles in relation to form a substantially vertical air chamber, said air chamber being sufficiently wide and adapted to cooperate in sealed relation with the vertical said perpendicular surfaces of said corner thereby defining a barrier to the passage of sound waves between the side walls of said air chamber and said vertical perpendicular surfaces and between the horizontal perpendicular surface of said corner and the bottom of said air chamber, said air chamber positioned where the intersection of said vertical perpendicular surfaces is most rearward, at least one aperture in one of said baffles, each said aperture being closed by a cooperating sound source, a second plurality of baffles, internally arranged in said air chamber, defining an expanding air column which expands primarily vertically from the lower frontward portion of said air chamber and which exits rearwardly at the bottom of said air chamber, and said air chamber further including an exterior baffle, arranged rearwardly and above said exit, spaced forward of said intersection and angled to slope in a forward direction, thereby completing said air chamber and partially defining a further length of an upward expanding air column, the definition of said further column being completed by said vertical perpendicular surfaces.