- Woofer: 6.5" Polypropylene cone with Butyl rubber surround and 18 oz. magnet - Tweeter: 1" pivoting mylar dome - Sensitivity: 90dB 1W/1m - Power Recommendations: 20 to 120 watts (undistorted) - Impedance: 8 ohms - Frequency Response: 45Hz to 20KHz ± 3dB