Features: USB Slot & LCDScreen Speaker: 15Two Ways Subwoofer Magnet: 40ozVoice Coil: 2.5 KSVFrequency Response: 45Hz - 18KHz (-10dB)Sensitivity: 98db (+/- 2dB)Impedance: 8 OhmsRMS Power: 300W / 600W max. 44mm Ti.Diap. Driver 20 oz, 8 Ohms