One 8.0inch (203mm) polypropylene woofer with butyl rubber surround and one 1.0inch (25mm) silk dome tweeter. BroadBeam Ring™ technology for mid-range clarity and smooth off axis performance. Easy-access six-position tap switch for 25/70.7/100volt and transformer bypass settings allows for easy ordering, stocking and installation. Tuned port on baffle for added musicality and bass response down to 55 Hz (-10dB). Reduced amplification costs and maxi¬mum efficiency of 86.0dB sensitivity, 16ohm impedance. Incorporates a painted steel grille for lasting durability. Adaptable to material thicknesses ranging from 0.035inch (0.9mm) to 1.6inch (40.6mm). UL 1480 and 2043 listed. Included accessories: Tile bridge, UL listed 0.5-inch conduit clamp, paint shield.