• Innovative mount system is included for quick simple and reliable installations • Carefully engineered for outdoor environments (IP54) without compromising performance • Long throw 4 (102 mm) woofer housed in a fire rated ABS plastic enclosure for extended LF performance down to 75 Hz • 40 W power handling provides for 103 dB maximum SPL (109 dB peak) • 70/100 V transformer version (LB20-PC15-4) available for constant voltage systems