8-Inch 260 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: Frequency Response: 40-22,000 Hz. Sensitivity: 92dB. Mounting Depth: 76mm. Diameter: 200mm. Impedance: 4 Ohms Designer grilles