DS18 BD-G44 Black Diamond 240 Watts 4-Inch 3-Way Coaxial Speakers - Set of 2 This Black Diamond Set of 4-inch Coaxial Speakers Deliver 240 Watts of Max Power 5.3 Ounce Magnet and a 25 Millimeter Voice Coil 88 Decibels of Sensitivity and a Frequency of 100-20,000 Hertz Injection Cone Woofer, 30 Millimeter Mylar Dome Tweeter, and 2x15 Millimeter Piezo Tweeters Included in this package is a pair of 4-inch four-way 240 watt speakers - carrying the high, mid, and low end for a fuller range sound.