MS-10SD4 SLIM | An advanced-design, shallow-mount, 4-ohm dual voice-coil subwoofer delivering phenomenal bass in a small space
Amazon.com: Massive Audio ECO12S4 – 12 Inch Car Audio 500 Watt ECO Series Subwoofer, Single 4 Ohm, 6mm Top Plate, Steel Basket. Sold Individually : Electronics
Bose Smart Soundbar 600 + Module 500 10" Wireless Subwoofer in Black Home Theater Surround System | NFM