Features Woofer Cfrp (Carbon Fiber Reinforced Plastic) Cone With Spezialised Rubber Surround Hamr (High Amplitude Multi-Roll) Surround Large 35 Mm Voice Coil Magnet Material: Ferrite Grill Sold Separately: Kte-S69G Tweeter Tweeter Type: 1" Wide-Range Silk Dome Magnet Material: Neodymium Crossover Network Grade: 2Nd Order Network Design Specifications Power Handling Peak Power: 260 Watts Rms Power: 85 Watts (Cta-2031 Compliant) Dimensions Woofer Frame 161 X 237 Mm Mounting Depth: 74.4 Mm Mounting Height: 7.4 Mm Magnet: 100.0 Mm General Frequency Range: 65 Hz - 22 Khz Impedance: 4 Ohms Sensitivity: 90 Db/W