mhelin
Well-known member
The 7-pin XLR or Binder connectors and sockets are expensive (for tube mic PSU's). Are the ham/CB radio microphone (don't know better name for them) connectors good enough to be used instead (in own projects, not as replacement generally)? There isn't much documentation on them, but they claim 500V DC insulation at least.
Here some:
https://www.americanradiosupply.com/microphone-plugs/
Are there any alternatives? 5-pin XLR is a lot cheaper than 7-pin, and also the mini-XLR:s are pretty inexpensive. You could even go with a 4-pin connectors (gnd, audio out, B+, H+) unbalanced to a PSU with a built-in mic transformer. There are some inexpensive 4-pin mini-XLR connectors available on Aliexpress:
https://www.aliexpress.com/item/4-pin-Female-Mini-XLR-Male-plug-Audio-Microphone-Chassis-Panel-Mount-Connector-Adapter-10sets-Free/1921033375.html
Here some:
https://www.americanradiosupply.com/microphone-plugs/
Are there any alternatives? 5-pin XLR is a lot cheaper than 7-pin, and also the mini-XLR:s are pretty inexpensive. You could even go with a 4-pin connectors (gnd, audio out, B+, H+) unbalanced to a PSU with a built-in mic transformer. There are some inexpensive 4-pin mini-XLR connectors available on Aliexpress:
https://www.aliexpress.com/item/4-pin-Female-Mini-XLR-Male-plug-Audio-Microphone-Chassis-Panel-Mount-Connector-Adapter-10sets-Free/1921033375.html