Dual 15" two-way self-powered speaker system; 1500 Watt (3x 500 watt) Crown® class D amplifiers. DSP-featured input section with selectable EQ. Two 15" Differential Drive® woofers and a 1.5" annular polymer diaphragm compression driver. DuraFlex™-covered, 18mm plywood enclosure, 16 gauge foam backed steel grille, die-cast metal handles, non-skid rubber feet. Light weight, only 60 lbs! MAX SPL136db