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(TM) protects the HF driver from excesses * Dual-angle Pole-Mount Socket Allows the Speaker to Tilt 10°for More Uniform Audience Coverage.