(2) Peavey SP4 Dual 15", 3-Way PA Speakers Totaling 8000 Watt With Black Widow Woofer, Biamp Capability, and the Peavey-Exclusive Sound Guard Protection Circuit Dual 15" 4000w Passive Black Widow Biampable 3-Way PA Speaker. Quasi three-way, full-range SR system. Rx22 compression driver with ferrofluid cooling. Two 15 BWX Black Widow 4 VC woofer. 2,000 Watts program, 4,000 Watts peak. Patented Quadratic Throat Waveguide technology. Asymmetrical horn aims the sound down 10 (at the audience, not over their heads). Sound Guard III tweeter protection. Full-range inputs include a Neutrik Speakonfour-pin jack and two 1/4 phone jacks. Bi-amp capability via internal wiring jumper. Trapezoidal Baltic birch enclosure, 11% lighter than SP 4X The new SP4 incorporates two of the new Quadratic Throat Waveguides and an enclosure made from Baltic birch plywood. The SP 4 is a Quasi three-way speaker system comprised of two 15 Black Widow BWX SF series woofer with a Kevlar/Carbon Fiber-impregnated cones, and an Rx22 compression driver loaded onto a constant directivity waveguide. The SP 4 has a trapezoidal-shaped enclosure, which reduces the buildup of standing waves inside the enclosure to minimize mid-bass and mid-range coloration. It is constructed of nine-ply Baltic birch and covered with a durable black carpet. The SP 4 has a trapezoidal-shaped enclosure, which reduces the buildup of standing waves inside the enclosure to minimize mid-bass and mid-range coloration. It is constructed of nine-ply Baltic birch and covered with a durable black carpet.