Peavey  SP 5BX Passive Speaker Enclousure w/ 1 15" Scorpion Woofer, and RX 22 Driver Two-way, full-range sound reinforcement system 800 watts program, 1600 watts peak 10 dB point: 50 Hz Sensitivity: 98 dB (1W/1m) anechoic RX 22 compression driver with Ferro fluid cooling Legendary Peavey reliability