Patented BroadBeam Ring™ waveguide technology providing smooth response and maximum SPL across the audio spectrum. One 12 inch (305mm) treated fiber cone with a treated cloth surround and one 1.375inch (35mm) Mylar compression driver with waveguide. Ported enclosure for added bass response (down to 73 Hz, – 10dB). High-SPL, high-efficiency system for the sound reinforcement and PA markets. Easy-access, five-position tap switch for 25/70.7/100volt applications with transformer bypass position. Reduced amplification costs and maximum efficiency (97dB sensitivity), with 8ohm impedance. UL 1480 (UEAY) and 2239 (hanging cable) approved. Included accessories: hanging hardware, Euroblock connector, terminal weather boot.