High Level input cable for sub B&W PV1

[nopiano]

I’m intrigued at this unusual choice of cable for connecting? Or are there in fact other brands that use this?

 

[Pippo53]

Hi JDI, I came back from vacation yesterday. Based on your advice, I made the cable respecting the order of the colours in the rj9 plug and that on the speakers. Everything works perfectly!!
I had also asked B&W but they didn't even answer me. Thanks again for your precious advice.
Joseph