Neumann M49 Clone : D-M49c and D-M49b Tube Microphone Build Thread. (+Sample)

[JW]

What power rating is needed for the 150M resistors? Is 1/4 watt fine?

 

[Murdock]

What power rating is needed for the 150M resistors? Is 1/4 watt fine?

Yes, as there is almost no current flowing, it should be fine.

 

[elskardio]

10uf cathode bypass cap is recommended with the 5840 instead of stock 20uf but experimentation and tuning is recommended.

Anyone tried different values here and care to comment?

10uF vs 22uF vs 47uF with the 5840 tube.

Thanks

 

[HerbertR]

Anyone tried different values here and care to comment?

10uF vs 22uF vs 47uF with the 5840 tube.

Thanks

It is a matter of taste. In my experience, 5840 tubes are not the least "microphonic" tubes on the market, and so depending on the 5840 tube used, I prefer a nice 22 µF or 33 µF tantalum capacitor to suppress the LF rumble a little bit more. It is a bit of finding the balance. Just try different values, you can't break anything and it only costs a few bucks. The experience and the feeling for it is worth its weight in gold. Believe me.