Lanzar MAXP124D Max Pro 15 Inch 2000W Dual 4 Ohm Car Subwoofer Audio System - Walmart.com
This multiroom Wi-Fi player by Audio Pro upgrades older audio systems
Amazon.com: Alphasonik 15" Flagship Series 1400 Watts Raw Sub Woofer Speaker Cast Aluminum Basket Driver for Pro Audio PA DJ Cabinets Subwoofer with High Handling Power Extremely Clear and Loud - FW1532 :