Includes built-in, bypassable, multi-tap 70V transformer for commercial distributed speaker applications Stylish, contemporary appearance suits indoor environments as well as outdoors Weather resistant ABS plastic enclosure and aluminum grills provide years of service Polypropylene 6-1/2' woofer with rubber surround produces balanced, accurate bass/mid response Metalized Mylar 1' dome tweeter for clean, non-fatiguing HF output