Driver:Woofer 3″ +Tweeter 0.5″ Frequency Response: 120Hz-20,000Hz Sensitivity(1m,1W): 88dB Speaker Dimensions: 153x106x106mm(HxWxD) Material: Engineering-Plastic Impendance: 8 Ohms Transformer:6w-3w-1.5w-8Ω(100Vor 70V)