Amazon.com: Logitech x-230 2.1 2-Piece Dual Drive Speakers with Ported Subwoofer : Artist Not Provided: Electronics
Logitech Z-2300 Subwoofer only
Logitech Z-2200 Computer Stereo Subwoofer Only | eBay
Amazon.com: Logitech Z313 2.1 Multimedia Speaker System with Subwoofer, Full Range Audio, 50 Watts Peak Power, Strong Bass, 3.5mm Inputs, PC/PS4/Xbox/TV/Smartphone/Tablet/Music Player - Black : Electronics
Logitech Z313 Speaker System With Subwoofer - Black (980-000382) : Target