JBL VRX915M 15" Two-Way Stage Monitor The VRX915M is a dedicated, compact and lightweight 15" two way touring-class floor monitor, with only a 375 mm (14.75 in) stage height and JBLs latest neodymium-magnet transducers Compact and low-profile for minimal obstruction of audience sightlines; 50 x 90 nominal coverage Bi-amplified or full-range passive operation Differential Drive woofer with neodymium magnet for high power capacity and very light weight 4" (voice coil) diameter compression driver with neodymium magnet