Original Logitech Subwoofer Driver 352-000067 7.25" 7 1/4" TESTED WORKING | eBay
How to: Change subwoofer in Logitech Z-5500 | Hardware Canucks
Amazon.com: Logitech Z623 2.1 Speaker System - 200 W RMS : Electronics
Logitech Z313 Speaker System With Subwoofer - Black (980-000382) : Target
Logitech Z407 Bluetooth Computer Speakers with Subwoofer and Wireless Control, Immersive Sound, Premium Audio with Multiple Inputs, USB Speakers - Newegg.com
How to Fix a Dead Logitech X-530 Speaker System : 6 Steps - Instructables