Environment-resistant EN54-24 certified SM Series loudspeaker systems offer quality sound reproduction and contemporary styling in a compact enclosure. System components consist of a highly efficient woofer section and ferrofluid cooled, titanium dome high frequency device. Vocal and musical clarity is optimized by the mathematically conceived, advanced 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 both 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 matching transformer with screwdriver adjustable tap selection for use in distributed sound applications. The tap selection switch also includes a transformer bypass setting for direct coupled 6ohm operation.