Here’s a good shot of my cable (presumably Belden).. You can see the “corkscrew” best when looking down along the length of the cable....
Not that I don't want absolute customer satisfaction, or your money back, but... can we now almost be done with this? It has taken up an awful amount of bandwidth.
Derek, There is no reason to get upset.The last picture you uploaded show the same cable construction in both shots, which indicate to me that they are the Belden that was used in the 1960s with U67. No other microphone cable of that era looked remotely close to the two you show in the photo. They both show a silvery, light gray cable with the braided shielding showing through the jacket and the shielding forming a twisted, corkscrew pattern as you look down on the cable.
The cable in your latest photo is indeed the one that came with the 1992 reissue of the U67. It is a Gotham-Dörfler-(or similar grade) 7-conductor +shield cable of very high quality. It will not sound the like Belden, if that is what you are after.
Addressing both issues:1. All audio cable material used with a tube mic (and transistor mic!) set-up is important and should be of highest quality for RF rejection and sound.2. I cannot give you a time line or transition years for what cable Neumann used at what point. It seems that the U67 shipped to the U.S. in the mid-1960s came with the Belden this whole discussion has been about. At least all U67 I have had here for service that had the "Gotham" sticker on the bottom of the power supply came with the Belden. European deliveries of that mic may have used the most widely available cable material at the time- EMT/Gotham/Neumann versions of double Reussen layer 96-strand conductor material.