The AH15A metal horn speakers are rugged, self-contained one-way amplified paging horn assemblies with screwdriver-adjustable volume controls. Their sturdy, weatherproof, all-aluminum construction make them ideal for use in industrial plants, warehouses, schools, construction sites, transportation terminals, and recreation areas.Universal mounting brackets permit adjustment in vertical and horizontal planes; banding slots are provided for ease in securing the horns to beams and pillars. Quick connections to audio and power sources are easily made with the supplied 4-conductor, color-coded cable. A plastic cover protects the volume control and provides cable strain relief.