6.5-Inch 220 Watts Triaxial Speaker System with additional voice coil ventilation for increased power handling and EXP pole core technology for maximum excursion and lower harmonic distortion. General: Cone Material: Injected PP. Surround: Rubber Midrange: Mylar Dome Tweeter: PEI Neodymium Magnet Midrange: Mylar Dome Frequency Response: 40-22,000 Hz. Sensitivity: 93dB. Mounting Depth: 56mm. Diameter: 165mm. Impedance: 4 Ohms Designer grilles