In Praise of the Humble Logitech X-230/X-530 : r/BudgetAudiophile
Amazon.com: Logitech x-230 2.1 2-Piece Dual Drive Speakers with Ported Subwoofer : Artist Not Provided: Electronics
Old Logitech X-230 vs Logitech Z623-#5 - YouTube
User manual Logitech Z323 (English - 1 pages)
Logitech Z313 Computer Speaker System with Subwoofer
Logitech Z313 2.1 Multimedia Speaker System with Subwoofer, Full Range Audio, 50 Watts Peak Power, Strong Bass, 3.5mm Audio Inputs, PC/PS4/Xbox/TV/Smartphone/Tablet/Music Player - Black - Newegg.com
Logitech X-230 (S0123A) Subwoofer ONLY Black With Power Cord. | eBay
Logitech Z313 Computer Speaker System with Subwoofer