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Best Buy: Alpine Type-R 12" 1000W Subwoofer Black SWR-12D4
Alpine SWT-10S4 10" 1000W Peak/350W RMS Shallow Slim Truck Car Subwoofer Bundle with AudioControl The Epicenter Black Digital Car Bass Processor with Remote Audio Control - Walmart.com
2) Alpine SWR-8D4 8" 1000w Dual 4 Ohm Car Subwoofer+Sealed Sub Enclosure Box - Rockville Audio
Alpine SWT-10S4 10" 1000W Peak/350W RMS Shallow Slim Truck Car Subwoofer Bundle with Rockville ROCKBOX 6.5" 100 Watt Portable Rechargeable Bluetooth Speaker w USB/SD : Everything Else
Alpine SWT-12S4 1500W Max Single 12" Sealed Car Subwoofer Tube Enclosure 793276242525 | eBay
Alpine SWT-10S4 10" 1000W Peak/350W RMS Shallow Slim Truck Car Subwoofer Bundle with Rockville ROCK EVERYWHERE Portable Bluetooth Speaker/Waterproof/Wireless Link : Electronics