JBL  JRX112M 12-Inch Classic Two Way Portable Loudspeaker JBL 12 in LF Driver with a 64 mm (2.5 in) Edge Wound Ribbon Voice Coil - for greater efficiency and Power handling Ferro-fluid Cooled Compression Driver with Titanium diaphragm improves HF performance Tough acoustically Superior enclosure constructed using 19mm MDFfor improved LF performance JBL advanced Crossover Network for sound shaping and SonicGuard protects the HF driver from excesses Dual-angle Pole-Mount Socket Allows the Speaker to Tilt 10for More Uniform Audience Coverage.