Amazon.com: Polk Audio PSW10 10" Powered Subwoofer - Power Port Technology, Up to 100 Watts, Big Bass in Compact Design, Easy Setup with Home Theater Systems Black : Electronics
Amazon.com: Skar Audio Dual 12" Complete 2,400 Watt SDR Series Subwoofer Bass Package - Includes Loaded Enclosure with Amplifier : Electronics
Amazon.com: Echo Sub - Powerful subwoofer for your Echo - requires compatible Echo device : Amazon Devices & Accessories
Amazon.com: Yamaha 8" 100W Powered Subwoofer - Black (NS-SW050BL)
Amazon.com : Sound Storm Laboratories LOPRO8 Amplified Car Subwoofer - 600 Watts Max Power, Low Profile, 8 Inch Subwoofer, Remote Subwoofer Control, Great For Vehicles That Need Bass But Have Limited Space,
Amazon.com: PRORECK PR-122M Complete 1500W Dual 12" Car Subwoofer, Includes Loaded Enclosure with Mono Block Amplifier,Wiring Installation Kit : Electronics
Amazon.com: Echo Sub - Powerful subwoofer for your Echo - requires compatible Echo device : Amazon Devices & Accessories
Amazon.com: Planet Audio AC10D Anarchy Series 10 Inch Car Subwoofer - 1500 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, for Truck, Boxes, Enclosures, Use with Amplifier : Electronics