System: 4"2-Way Coaxial Speaker Tweeter: 30 mm PEI cone tweeter Magnet: 6 oz Voice Coil: 1" Impedance: 4 Ohms Power: 50 Watts Peak, 120 Watts RMS Frequency Response: 80-20kHz Sensitivity: 89dB/M.W Carton: 45*33.5*31 CM Qty./Ctn.:10 pairs