MS-FR6520Featuring a unique poly carbon cone and removable grill for color coding with water resistant construction.Thoroughly tested to ensure consistent and reliable performance.Designed for optimal sound reproduction across the full audible spectrum - the human ear is most sensitive to amplitude, pitch, clarity and linearity in the 375Hz to 3kHz bandwidth.High Quality Poly Carbon ConeWater Resistant Construction 2-Way Design25 Oz Magnet / 50 Oz Magnet Structure1" High Temperature Aluminium Voice Coil1" Mylar Dome TweeterMax Power: 200WFrequency Response: 80-20,000 HzSensitivity: 90dB (1W/1M)Impedance: 4 OhmWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.