JBL Professional Control HST Wide-Coverage Speaker with 5.25-Inch LF, Dual Tweeters and HST Technology, White - The dual tweeters feature aluminum diaphragms with a CMMD treat polyurethane surround a neodymium magnet and fluid-cooling for high output low distortion and humidity resistance - The well-damped woofer incorporates a comma ceramic metal matrix diaphragm for a very high stiffness-to weight ratio high output resistance to humidity and long-term durability - Engineered noise cancelling allows control HST to provide a flatter resulting frequency response along with a more consistent sound character throughout the room - 100 W (400 W peak) 2 hours / 75 W (300 W peak) 100 hours - 70V 60W 30W 15W 7 5W/ 100V 60W 30W 15W