Pioneer TS-A1782R 6.75-Inch 4-Way 280-Watt Speaker 6-3/4-inch, four-way speakers with 280 watts maximum power handling (50 watts nominal) Woofers feature composite IMPP cone with interlaced dual aramid fiber and butyl surround 1-1/2-inch soft dome midrange, 5/8-inch dome tweeter, 3/8-inch dome supertweeter Full depth basket for rich bass response 35 Hz to 28 kHz frequency response with 91 dB sensitivity