Abstract: The invention relates to a loudspeaker system for omni-directional sound emission consisting of a elongate member forming an air column and a plurality of annular speaker units mounted in axially spaced relationship on the elongate member. Diffusors also mounted on the elongate member are provided with conical surfaces facing the speaker units. Electrical wiring and auxiliary speaker components such as crossover networks may be mounted in the elongate member.

Abstract: A loudspeaker box for faithfully reproducing stereophonic sound. The box is divided into at least two chambers hermetically sealed from each other and provided with loudspeakers for propagating sound in directions substantially orthogonal of each other. The speakers may be alike or different and they may be controlled independently of each other in respect of their relative output volumes or frequencies.