Features Tweeter Tweeter Type: 25Mm Silk Soft Dome Tweeter Magnet Material: Neodymium Magnet Woofer Cone Material: Polypropylene Cone Pearl Mica Injection Voice Coil Type: Square Voice Coil Wire Magnet: Ferrite Magnet Frame: Injection Mold Frame Design: Ultra Long Excursion Design Specifications Power Handling Peak Power: 300 W Rms Power: 75 W Dimensions Woofer Mounting Diameter: 15.0 Cm X 22.2 Cm Woofer Mounting Depth: 7.6 Cm General Frequency Response: 65 Hz To 18 Khz Impedance: 4 Ω Sensitivity: 91Db / W (1M)