Used Alto Ts12s 2500W 12 Powered Subwoofer
Amazon
Alto Professional TS12S - 2500W 12-inch Subwoofer, Powered PA Speaker with 6 Selectable DSP Modes, Easy Setup, 130 dB, 3" Voice Coil, Superior Bass
Guitar Center
Alto Ts12s 2500W 12" Powered Subwoofer
WOODWIND BRASSWIND
Alto TS12S 2500W 12" Powered Subwoofer by Woodwind & Brasswind