A mic that never was (a thought-experiment circuit for the RK-12 capsule)

[KrIVIUM2323]

Yes. I built the first version of it with BF245a in J1 and J2 position.
Here is a rap song with Rev 1 of that circuit.

Both the mic and mix sound great.
Off topic:
Analag, do you plan to share the different circuits you shown in your The Mic thread?

 

[analag]

Both the mic and mix sound great.
Off topic:
Analag, do you plan to share the different circuits you shown in your The Mic thread?

Thanks. I'll share them. In that song I'm using a DIY M1 type pre. Discrete opamp with double current mirror or Widlar CM and I did the bootstrapped CS for better performance than the diode biased thing. It's a modified 990 then into my optical comp. I did a total redesign on that one. It now uses 6N23p. I think it sounds better.

 

[analag]

That's my circuit mocked up with all the components that will be going on there. The other board will handle the transformer and the pair of 2.21K maybe some filtering. As of right now I am waiting on a capsule and a transformer. It's a long wait but I'm hanging in there!

 

[micolas]

... It's a modified 990 then into my optical comp. I did a total redesign on that one. It now uses 6N23p. I think it sounds better.

I put 6N23P-EV (6H23P-EB) NOS Soviet military grade in 2 microphones model Rode K2. It is an excellent tube!
Sounds great, much better than the stock tube.
Edit:Sorry for this off topic remark

 

[micolas]

Yes. I built the first version of it with BF245a in J1 and J2 position.
Here is a rap song with Rev 1 of that circuit. Mind you I mixing in
View attachment 144766
some grime to fit the track.

I quickly isolated the voice to hear it better, although it was processed.
It sounds very good
View attachment Analag Rap jFETs v1- voice.mp3