There's no sign of life. Old pc speaker restoration (genius sp-205b) - YouTube
Factory Fresh (late 90's?) Harman Kardon PC Speakers - never been used : r/ThriftStoreHauls
HP USB Business speakers v2 - Speakers - for PC - 4 Watt (total) - black (grille color - black) - for Elite Slice G2; EliteDesk 800 G5; ProDesk 400 G6, 40X G4; Workstation Z1 G5 - Walmart.com
Amazon.com: Cyber Acoustics USB Powered 2.0 Desktop Speaker System with 3.5mm Audio for Laptops and Desktop Computers (CA-2016), Black : Electronics
Ancient Harman-Kardon PC Speaker Re-Capping – The Smell of Molten Projects in the Morning
The 1990s PC speakers ... Still useful until now. : r/pcmasterrace
90's Computer Speakers : r/nostalgia
Old PC Speaker(Altec Lansing) Restoration & Bluetooth 5.0 Upgrade : 6 Steps - Instructables