Single-tap speaker include a stepped attenuator volume control and come with a tilt and swivel mounting base for greater flexibility in setting the angle of projection. Horn loudspeakers are compact, high intelligibility, reentrant type loudspeakers designed for use with 70V amplifier systems. Their sturdy, weatherproof, all-metal construction is ideal for indoor and outdoor use in industrial plants, warehouses, schools, construction sites, transportation terminals, and recreational areas.