JBL POWER SERIES SPEAKERS. These are the older and much better JBL top of the line professional speakers. They are passive and need to be powered by 2 separate power amps.
The cables are 4 pole and I have them too.
They cost a few grand back in the day i'm looking £500 ono for them. Would Suit Club/Bar/Church/Band.
Pictures on Gumtree: https://www.gumtree.com/p/speakers-monitors/jbl-passive-sound-power-series-speakers/1194869760