Pioneer 12" 1400 W Max Power, Single 4-ohm Voice Coil, IMPP™ cone, Rubber Surround Component Subwoofer BLUE TS-A123R - Best Buy
Amazon.com: 5.1 CH Surround Sound Bar with Dolby Audio, Sound Bars for TV with Wireless Subwoofer, Dolby Digital Plus, Bluetooth 5.0, Surround Sound System for Home Theater, Works with 4K & HD
GRS 12SW-4HE 12" Paper Cone Rubber Surround High Excursion Subwoofer 4 Ohm