OPEN SOURCE DIY Mic Project - ORS 87 - Stripped Down u87

[elskardio]

I think 11(or more) years ago, it was less common to have accurate spectral analysis in plugins, and hardware spectral analyzers are crazy expensive. A lot of people have oscilloscopes though, so looking for symmetrical clipping made sense.

I haven't thought of that, and it makes sense!
Now.. Should I re-bias all my mics?

 

[AdamFrisen]

I was not happy with how I secured the U87 ORS board(s) in the U87-ish body I had so I made my own PCB.

I followed the U87AI original schematic closer and I also wanted to get 60V to the capsule.

The LTC3290 seems to work after 2 failed attempts (I needed to connect it directly to the phantom power in to the mic in order to get to work).
It doesn't require any inductors and was the smallest solution I could find.

So comparing to the mic using U87 ORS PCB (Homeros) and the PCB tailored for the mic body:




And mic built using the new PCB with 60V addition: