Environmentally resistant and EN54-24 certified, the SM Series speaker systems offer quality sound reproduction and contemporary styling in a compact enclosure. The system components consist of a highly efficient woofer section and a ferrofluid-cooled titanium dome high-frequency device. Vocal and musical clarity are optimized through the advanced, mathematically engineered design of the AtlasIED TRX Control WaveGuide™ high-frequency director. This design provides smooth, even sound coverage (90o H x 90oV). The high frequency section is symmetrical, for equal coverage in vertical and horizontal cabinet mounting positions. High-frequency component protection is provided by the AtlasIED PolyGuard™ protection circuit. The SM52TEN includes an internally mounted 60 watt 70.7V/100V line transformer with screwdriver adjustable tap selection for use in distributed sound applications. The tap selector switch also includes a transformer bypass setting for direct-coupled 6 Ω operation.