Pioneer TS-A4672R 3-Way 4-Inch X 6-Inch 150-Watt Speakers 4-by-6-inch, three-way speakers with 150 watts maximum power handling (20 watts nominal) Woofers feature composite IMPP cone with interlaced dual aramid fiber 15/16-inch soft dome midrange with neodymium magnet and magnetic fluid, 3/8-inch dome tweeter Custom-fit US/Euro basket design 45 Hz to 33 kHz frequency response with 90 dB sensitivity