Subwoofer Magnet: 60oz Voice Coil:2.5" KSV Frequency Response: 40-18KHz(-10dB) Sensitivity: 98dB Impendance: 4/8ohm Max Power:400W Dimensions(W+D+H):48.5*40*71.5cm Tweeter: Impendance: 8ohm Voice Coil Diameter:1.75" (44mm) Freqency Range: 1.2KHz-18KHz Sensitivity: 98dB 25mm Ti.Diap.Driver: 19.6oz, 8Ohm Gross Weight:22Kg Net Weight:21Kg Package size: 53*45*77.5cm