Amazon.com: Alpine SWT-10S2 10" 1000W Peak/350W RMS Shallow Slim Truck Car Subwoofer Bundle with Rockville ROCK EVERYWHERE Portable Bluetooth Speaker/Waterproof/Wireless Link : Electronics
Alpine R2-W10D2 10" 750w Dual 2-Ohm Car Audio Subwoofer+Sealed Sub Box Enclosure - Rockville Audio
Alpine Car Audio Systems 800W 12" bandpass subwoofer in custom enclosure 7427282664141 | eBay
Alpine R2-W8D2 8” 350W RMS Car Audio Subwoofer+Ported Sub Box Enclosure R2W8D2 613817082987 | eBay
Amazon.com: Alpine SWT-12S4 1000 Watt 12" Car Audio Bass Tube Subwoofer Bundle with Amplifier and Amp Kit : Electronics
Alpine 10 Inch Type-R Subwoofer (R-W10D4/D2) | SK Customs Car Audio & Home Theater | Atlanta | Norcross | Duluth | John's Creek
Amazon.com: Universal Car Stereo Rearfire Sealed Dual 12" Alpine S-W12D2 Type S Car Audio Subwoofers Custom Sub Box Enclosure Package New : Electronics
Amazon.com: Universal Car Stereo Vented Port Single 10" Alpine S-W10D4 Type S Car Audio Subwoofer Custom Sub Box Enclosure Package New : Electronics
Alpine S-DB8V-TRK Halo Series 8" ported dual subwoofer enclosure with two 8" S-Series subwoofers at Crutchfield