innax Professional Wooden Case Subwoofer Powered Wooden Case Subwoofer system RMS : 75W; Speaker Type: Powered Subwoofer 5", Satellite speaker: 3.5" x 2 Characteristics: Amplified Magnetically Shielded; Operating Temperature: 0 to 40C; Operating Humidity: 20% to 80%; Frequency response : SUB: 60Hz-200Hz Satellite: 150Hz-18KHz; THD% : &lt;0.5%; Carton quantity : 4 Sets Dimension: 13 x7.75 x 18.85 Inches; Function control : Power / Volume / Bass; Manufactures Warranty: 1 Year