I am looking to find a cable and plug assembly for a Shure 51 vintage mic. Do you know where I could find a replacement?
Shure no longer has parts for these mics, including cables and connectors.
The connectors were called Amphenol connectors. If it's a 3 pin connector you need, the model number was MC3M. If it's a 4 pin connector you need, the model number was MC4M.
If you are looking for a cable, such as Amphenol to XLR connector, there is a person in Dallas, TX who will make them. His name is Tom Ellis. His phone number is 214-328-3225.