Acoustic system e.g. for room and stage public-address, has two oscillators mounted on common axle and movable relative to one another

摘要

An acoustic system , especially using horn loud-speakers, has at least two oscillators each joined to a transformer. The oscillators are mounted on a first axle and are movable relative to one another. More specifically, one of the oscillators is movable on a second axle which is perpendicular to the first axle. An independent claim is included for the application of at least two acoustic systems.