3-way 6"x9" speakers (pair) injection-molded mica-filled polypropylene woofer with polyether foam surround 2" Mylar cone midrange driver, 3/4" silk dome tweeter 4-ohm impedance 2-70 watts RMS power range frequency response: 53-22,000 Hz sensitivity: 93.0 dB depth: 3-1/4"