Thanks for the advice, Marik.
In return, I have an interesting mic for you guys to have a look at. It is the STC 4115, high performance commentators' microphone.
Here are some shots of the motor:
I am working on this mic at the moment. Strangely, it had electronics inside, as it was designed for use in aircraft too.
It still seemed quiet, thin, and noisy with a Beyer 200 Ohm ribbon transformer, so I will have to think about it.... Maybe the ribbon has too high resistance.... I doubt it though because it is very small. I guess the ribbon is ~2 - 3 microns thick. I will keep trying - I had a similar problem with another STC mic which magically started working after dismantling and re-assembling!
In return, I have an interesting mic for you guys to have a look at. It is the STC 4115, high performance commentators' microphone.
Here are some shots of the motor:
![](https://proxy.imagearchive.com/4a0/4a06a939b9ab52532371c10301378c8b.jpg)
![](https://proxy.imagearchive.com/9ef/9efa7417e898812fc2621b23abc332ec.jpg)
![](https://proxy.imagearchive.com/d1e/d1ea05b02d2645d226116dd3e1285a83.jpg)
![](https://proxy.imagearchive.com/d59/d597149e1da9203b14ab450fb5784a87.jpg)
I am working on this mic at the moment. Strangely, it had electronics inside, as it was designed for use in aircraft too.
It still seemed quiet, thin, and noisy with a Beyer 200 Ohm ribbon transformer, so I will have to think about it.... Maybe the ribbon has too high resistance.... I doubt it though because it is very small. I guess the ribbon is ~2 - 3 microns thick. I will keep trying - I had a similar problem with another STC mic which magically started working after dismantling and re-assembling!