My friend gave me his broken HD 428s and I have to recable them because the cable is frayed above the left ear. I am completely new to recabling and I don't know where to start. If someone could recomend a place to buy cable that is not to expensive that would be nice. I also don't know where to solder the wires at. When I open up the headpones there are two wires coming out of the driver, a copper and a red one but a couple inches up the wire is twisted and it switches to a copper wire and a green wire. Is that there for a reason? Also if i wanted to change it from the wire going into only the left headphone to both what would I have to do. If someone could also give instructions for everything I need to do and what I solder where. Thanks for anyone that helps.