High quality, heavy duty speakers suitable for indoor and outdoor use even in extreme weather conditions. The all metal extruded aluminium cases with cast aluminium top and bottom plates are fully dust and weatherproof, IP65 rated. Fitted with high quality 150mm (6") x 100mm (4") elliptical speakers which produce good clear sound and acoustical clarity. Supplied with strong mounting brackets and fitted with 100V line matching transformers. Wattage tappings are selected by an integral rotary switch on the rear panel. Fitted with a length of connecting cable.