Driver:Woofer 6″ +Tweeter 1″ Frequency Response: 50Hz-20,000Hz Sensitivity(1m,1W): 90dB Speaker Dimensions: 302x196x193mm(HxWxD) Material: Engineering-Plastic Impendance: 8 Ohms Transformer:32w-16w-8w-4w-8Ω(100Vor 70V)