Sub-Bass way active Speaker System, Aluminum Alloy speaker enclosure, Frequency Response: 40Hz – 125Hz, Maximum SPL: 125dB, 15” low frequency woofer, Input Connections: 1/4in jack or XLR,350 Watt Low Frequency Class H , Amplifier, Dimensions: 19”W x 29.25”H x 18.5” W, Weight: 75 lbs.