15" Two-Way  Self-Powered Speaker System; 400 watt LF and 100 watt HF Crown® Class D Amplifier. DSP-Featured Input Section with Selectable EQ. 15" Differential Drive®  Woofer with a 1.5” Annular Polymer Diaphragm Compression Driver,  DuraFlex™-Covered  Plywood Enclosure, Tough Polyurethene Protective End-Caps, Steel Foam Backed Grille, Die Cast Metal Handles, 35 mm Pole Socket, Non-Skid Rubber Feet. Light Weight, 26 kgs (57 lbs).