Specifications:Output Power(RMS): Subwoofer 15W; Satellites:Front/Rear 5Wx4; Cent 5WSpeaker Driver: Subwoofer 4"; Satellites:Front/Rear 2.5"x4;Cent 2.5"x1Dimension(mm): Subwoofer 170x230x195; Satellites:Front/Rear 90x92x123; Cent 90x92x123Frequency Rang: Subwoofer 50-200Hz; Satellites 180-20KHzS/N:80dBCabinet Material: Full Wooden