Biasing a Microtech Gefell UM705

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

adamasnan

Well-known member
Joined
Sep 24, 2018
Messages
143
Hi everyone! Seeking some advice

I had to replace the FET in my UM705 and it's unclear to me which would be the biasing resistor? The source of the FET is connected to a transistor.. The new FET is a little noisier than one of the other mics i have, so I want to see if it's something I can adjust.

Schematic attached

Thanks!
 

Attachments

  • UM705 sch.jpg
    UM705 sch.jpg
    148 KB

Latest posts

Back
Top