FET conversion project

If anybody needs step by step instructions or a wiring diagram I can guide you through the process and give you a list of parts you'll need but the most important part is the case itself.
http://m.ebay.com/itm/Electro-Voice...%3A8a0d47bd15b0a9c953b2e94dfffffcac%7Ciid%3A1

 

Higher output level and much greater Fidelity for starters.
Even though it goes from 50 hertz to 16000 Hertz I'll only be using 300 hertz on up to whatever the radio decides to use.
The High Frequency response is phenomenal with that element.
One nice thing about that case is that I could put it under your steer Tire and you could drive over it without crushing the case. I can't think of another microphone that would take that type of abuse and still survive.

 

It looks like with 5 volts in it requires 10000 ohms of attenuation and with 1.5 volts in it requires no attenuation.
It looks like that particular electret was a very good choice for 1.5 volts.

 

Tested it out today and it seems to be pushing right up against the amc circuit as planned, without any attenuation.

 

@ $69.00 for parts, including a secondhand donor microphone plus 3 hours labor, it would be difficult to turn a profit but good stuff doesn't come cheap.

 

Wait for surprise tomorrow. ..

 

Thanks for the correction. Maybe electret would have been more accurate.
Without test equipment it would be hard to measure output level in order to have numbers to punch into the equation.

Just tested this morning. Tight race.