Amazon.com: Planet Audio PL12S Pulse Series 12 Inch Car Audio Subwoofer - 1000 Watts Max, Single 4 Ohm Voice Coil, Sold Individually, for Truck, Boxes and Enclosures, Use with Amplifier : Electronics
GOgroove BassPULSE Red LED Computer Speaker System with Powered Subwoofer for Desktops , Laptops , Tablets , MP3 Players , Home Theaters & More - Walmart.com