Amazon.com: BESTISAN Powered Subwoofer, 6.5" Active Home Audio Subwoofer in Compact Design,LFE & Stereo Line Inputs & Audio Output, Built-in Amplifier for Home Theater/Receiver/TV/Speakers, Black, SW65D : Everything Else
Premium 140W Gaming PC Subwoofer | Deep Bass | NZXT Relay
Roku Wireless Bass Pro – Wireless Subwoofer for TV | Roku
REFERENCE 8b Subwoofer | KEF USA
Amazon.com: Pyle Car Subwoofer Audio Speaker - 8in Non-Pressed Paper Cone, Black Plastic Basket, Dual Voice Coil 4 Ohm Impedance, 800 Watt Power and Foam Surround for Vehicle Stereo Sound System -
VD-12 | 12" 800 Watt Max Power Subwoofer (Shallow Mount) | Skar Audio