DD AUDIO 812d-D2 12" SUB WOOFER 6000W DUAL 2-OHM CAR SUBWOOFER BASS SPEAKER NEW | eBay
Digital audio da8012 12 in subwoofer - YouTube
Amazon.com: 2X SoundXtreme ST-412 Premium Elite 12 Inch Car Audio Subwoofer 4000 Watts Max Power for Pair Dual 4 Ohm Voice Coil High Power Bass Surround Sound 12" Sub Speaker System Pair : Electronics