Features: Woofer Cfrp (Carbon Fiber Reinforced Plastic) Cone With Spezialised Rubber Surround Hamr (High Amplitude Multi-Roll) Surround 25 Mm Voice Coil Magnet Material: Ferrite Tweeter Tweeter Type: 1" Wide-Range Silk Dome Magnet Material: Neodymium Crossover Network Grade: 2Nd Order Network Design Specifications: Power Handling Peak Power: 140 Watts Rms Power: 45 Watts (Cta-2031 Compliant) Dimensions Woofer Frame 102 Mm Mounting Depth: 43 Mm Mounting Height: 13.3 Mm Magnet: 75.0 Mm General Frequency Range: 97 Hz - 22 Khz Impedance: 4 Ohms Sensitivity: 86 Db/W