Driver:Woofer 6″ +Tweeter 1″ Frequency Response: 60Hz-20,000Hz Sensitivity(1m,1W): 90dB Speaker Dimensions: 370x210x225mm(HxWxD) Material: Engineering-Plastic Impendance: 8 Ohms Transformer:32w-16w-8w-4w-8Ω(100Vor 70V)