Abstract: An acoustical reflector is positioned in such manner relative to a loudspeaker as to reflect all of the indirect sound waves generated as a necessary concomitant to the generation of direct sound waves by the loudspeaker substantially only to the audience area receiving said direct sound waves from the loudspeaker. In an array of a plurality of loudspeaker, each serving one of a plurality of audience areas, acoustical reflectors are positioned relative to said plurality of loudspeakers so that indirect sound waves, generated as a result of the generation of direct sound waves by each of said loudspeakers, are reflected substantially only to the audience area served by said loudspeaker and not to audience areas served by other loudspeakers.