The JBL Soundfactor SF15, 15" speaker system is at home in live sound, dance music and speech reinforcement. The SF15 is equipped with a 35mm pole mount socket, and an impressive peak power capacity of 1000 watts. Hard-driving 15" woofer with a 2-1/2" edge-wound ribbon voice coil for greater efficiency and power handling. Ferrofluid-cooled compression driver with titanium diaphragm for crisper high end. Advanced crossover delivers coherent summation in the crossover region. High-voltage capacitors and heavy-gauge wire result in a crossover that won't saturate at high power levels. Handles 250 watt program. 3/4" medium-density fiberboard cab with recessed handles, 18-gauge perforated steel grille, and 35mm polemount socket.