DS18 GEN-400 4-Inch Speaker 2-Way 210 Watts - Set of 2 4" 2-Way Coaxial Speaker. Black Paper Cone with Rubber Edge. 1" (25.5mm) ASV Voice Coil and 28mm Mylar Balanced Dome Tweeter RMS Power: 65 Watts, Max Power: 210 Watts. Impedance: 4-Ohms, Sensitivity: 85dB Frequency Response: 105-20KHz, Magnet Size: 70x32x12mm