Sennheiser hd 518 came with a big jack, like on an electric guitar, how to solder it to a 3.5 jack?

Question

Cables and wires

I bit off the Jack from the cable from the headphones (to replace it with a 3.5 jack, there were 4 wires inside: black, white, blue and red. The hd 518 model from sennheiser does not have a microphone and a wheel. I did not find anything on the Internet with how to solder exactly my ears. Please help me figure out what to do and if you can.

Answer 1

On the bitten off jack, find which wire is from which contact... Also connect the wire on the new mini jack... Profit... If the number of contacts is different, then find the pinout in Google - which contact is which ear, not necessarily the pinout of the headphones, but just the jack - everything is standard there. Well, finally there are adapters, after all ... It's a bit late, but so, for the future ...

Answer 2

Ring the wires<->large jack contacts and project to 3.5 jack.
Just not sure if these wires will solder easily. :(