Trapezoidal loudspeaker enclosure

Abstract

A loudspeaker enclosure is configured in trapezoidal shape, with one angular end wall supporting an electromagnetic or electrostatic loudspeaker of the type having both front and back acoustic waves, with the front of the loudspeaker registering with a front wave opening in the angular end wall and the back of the loudspeaker communicating through a transmission line cavity with an acoustic port in the opposite angular end wall. Said opposite angular end wall supports a tweeter spanning said acoustical port. The port is dimensioned larger than the tweeter to provide a port opening having a cross sectional area of about 0.5 to about 2.0 times the operative area of the loudspeaker, and the centerlines of propagation of sound waves from the front waves of the loudspeaker and port form an included angle of about 90°. A mounting base is configured to support the enclosure removably at the port end with the parallel sides extending vertically. A deflector is configured for mounting removably on the opposite, loudspeaker end for deflecting sound waves angularly downward to project father forward into a room. The enclosure may also be used in pairs disposed horizontally and spaced apart horizontally, either along a wall or facing angularly inward from opposite corners of a wall, to substantially fill the room uniformly with sound.