Free Express Shipping! JBL IRX115S Compact Powered 15" Portable Subwoofer For Musicians, Presenters, Instructors, 15" Woofer, 45 to 103 Hz Frequency Response, 128 dB Max SPL, Preset Crossover Settings, Polarity Switch, 2 x Combo XLR-1/4" Line Inputs, 2...