JBL MRX512M 12-Inch Premium Two-Way Portable Loudspeaker JBL Special 12 inch Differential Drive woofer gives high power with low weight JBL Premium 1.5 inch Annular Polymer Diaphragm HF Driver Tough "Duraflex" coated paint enclosure finish and Heavy Duty 16 gauge Perforated Grille NL4 Neutrik Professional connectors on both ends for stage monitor link ups Dual-angle Pole-Mount Socket Allows the Speaker to Tilt 10for More Uniform Audience Coverage.