Alto Professional TS312S | 2000 Watt 12 Inch Powered Portable PA Subwoofer With Selectable DSP Output Modes For Matching With Companion PA Speakers : Musical Instruments - Amazon.com
Alto 1000W, 12″ Active Subwoofer – TS312S | Goodfor Audio Entertainment
Alto TS 312S Subwoofer B-Stock: Good Match For Your Taste?