These speakers are tricky because they require amplification. There was a 3rd-party device named "iFire" which allowed any computer with a firewire port to drive them, but it's also discontinued and very expensive on the used market. The best path forward without destroying the speakers would be to source a 2.5mm TRRS adapter that the Pro Speakers can plug into, then chop up that adapter and run it through an amplifier and then a standard 3.5mm stereo jack.
The difficulty will be finding a 2.5mm TRRS adapter that fits into the pro speakers, because the outer ring tends to interfere. Something like [link|https://www.ebay.com/itm/285530680172|this|new_window=true] may work, but you should measure to see how much clearance you'd have. You could chop the pro speakers, but the preservationist in me advises against it.