Edge RS12K Single 12in Complete Echo Series Subwoofer Bass Package, Include Class-D Mono Amplifier and Complete Wiring Kits - China Sbwoofer and Audio Speaker price | Made-in-China.com
Edge Car Audio BIG SPL Twin 12" Subwoofer package - 9000w Peak Power ! | eBay
BOSS Audio Systems B12ES 12 Inch Powered Car Subwoofer Package - 600 Watts Max, Built-In Amplifier, Low Profile, Remote Subwoofer Control (16 ft Cable) - Walmart.com