Bogen reentrant type loudspeaker30 WattCompact, high intelligibilityDesigned for one way or two way sound and communication systemsSturdy, weatherproof, all metal construction is ideal for indoor and outdoor use in industrial plants, warehouses, schools, construction sites, transportation terminals, and recreational areasScrew terminals make installation fast and easyBuilt in, variable impedance selector switch for matching the speaker power requirements to a 25V or 70V constant voltage lineEngineered to simplify installation with a uniquely designed all purpose mounting bracket and field maintenance with a self aligning, field replaceable diaphragm Speaker and mounting bracket are handsomely finished in textured mocha enamelBeam clamp is also available optional, BC1 High intelligibility and efficiency, ideal for both one way and talk backapplicationsWeatherproof, all metal construction30 Watts, 25/70 volt or 8 ohm operationRotary tap impedance selectorBGSPT30A