For many years, iconic JBL loudspeakers have perfected the definition of luxury audio. The 4367 is no exception. The high-performance loudspeaker was built upon the same professional-grade technology used in the acclaimed JBL Professional model M2 Master Reference Monitor, one of the most advanced and sophisticated loudspeakers in the world today. This 2-way loudspeaker offers a cast-frame 15-inch woofer (2216Nd-1) with a powerful, patented Differential Drive® dual 3-inch voice coil and neodymium motor structure for outstanding behavior in the low to mid frequency range. Upper-mid and high frequencies are reproduced by a patented D2430K 3-inch dual diaphragm, dual voice coil compression driver with dual neodymium motor structures and JBL's patented High-Definition Imaging (HDI™) waveguide horn. All of this was designed to offer a high performance audio experience.