Driver:Woofer 5.25″ + Tweeter 0.5″ Frequency Response: 60Hz-20,000Hz Sensitivity(1m,1W): 88dB Speaker Dimensions: 204x84mm(φxD) Material: Engineering-Plastic Impendance: 8 Ohms Transformer:16w-8w-4w-8Ω(100V or 70V) Backcan:Steel backcan