Nominal Impedance 4 Ohms.Quasi-three-way, full-range, bi-ampable sound reinforcement system.RX 22 compression driver with ferrofluid cooling.Two 15 inch BWX Black Widow® 4 inch VC woofers.2000 watts program, 4000 watts peak.Patented Quadratic Throat Waveguide technology.Sound Guard III tweeter protection.Full-range inputs include a Neutrik® Speakon® 4 pin jack and two 1/4 inch phone jacks.Bi-amp capability via internal wiring jumper.Trapezoidal baltic birch enclosure.Dimensions (HxWxD): 49" (1244 mm) x 20.75" (527 mm) x 23.625" (600 mm)Weight: 113.1 lbs (51.4 kg)