Engineered for optimal sound reproduction with proven reliability continuing a 30-year legacy, Peavey SP enclosures feature patented asymmetrical Quadratic Throat Waveguide(tm) technology that helps deliver pristine, precise sound; Black Widow(r) loudspeakers with Kevlar(r)-impregnated cones, 4" ribbon-wire voice coils and exclusive field-replaceable baskets; the patented Radialinear(tm) Planar Phase Correction System; and titanium compression drivers with ferrofluid cooling. Height: 32 Width: 0 Weight: 54.98