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 Pro TS312 Powered Speaker 12'' 2000W Active TS-312 2000 Watt 12 Inch | eBay
Alto Truesonic TS Sub 12 Active Subwoofer with DJ Tutor @ www.getinthemix.co.uk - YouTube