R/E/P Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: [1]   Go Down

Author Topic: Gudeman caps M49 C5  (Read 1453 times)


  • Newbie
  • *
  • Offline Offline
  • Posts: 27
Gudeman caps M49 C5
« on: January 30, 2021, 02:01:05 AM »

I wondered,are Gudeman 1 microfarad/160V? caps as well regarded as the Bosch or Seimens/Halske?

Would I hear a difference if I swapped out the Gudeman in my M49b?

Was this an original part?

What are the preferred current manufacture PIO's for coupling caps,or is it preferable (soundwise,not for authenticity/resale) to hunt down the originals?


  • Sr. Member
  • ****
  • Online Online
  • Posts: 446
Re: Gudeman caps M49 C5
« Reply #1 on: January 30, 2021, 09:48:31 AM »

I cannot comment on the audibility of capacitor differences, except with the really bad ceramic ones that are not suited for audio anyway.

I can measure capacitor distortions down to -155 dB, and there are very few that are below this line.
Paper/oil types (the ones that are relevant for this posting) have distortions widespread in the range around -120 dB.

Every type and model of capacitor is different, and there are large unit to unit variations within a batch of the same model.

When historic mics where built, the manufacturers chose what was available and suited for the job.
Had their choice been a “lucky punch” or doesn’t it matter?


  • Moderator
  • Hero Member
  • *****
  • Offline Offline
  • Posts: 2238
Re: Gudeman caps M49 C5
« Reply #2 on: January 30, 2021, 01:23:36 PM »

Please share with forum readers those capacitor types and brands that are at the lower end of distortion and how using them would affect performance.
Klaus Heyne
German Masterworks®


  • Full Member
  • ***
  • Offline Offline
  • Posts: 126
  • Real Full Name: Ruud van Steenis
  • There is a solution for every problem!
Re: Gudeman caps M49 C5
« Reply #3 on: January 31, 2021, 04:47:03 PM »

Of course one can question how important distortion below -120 dB (0.0001%) is...


  • Newbie
  • *
  • Offline Offline
  • Posts: 27
Re: Gudeman caps M49 C5
« Reply #4 on: February 01, 2021, 09:51:26 AM »

Any thoughts on the original questions?
If you are restoring an M49 what cap do you choose?
Is the Gudeman likely original?


  • Jr. Member
  • **
  • Offline Offline
  • Posts: 50
  • Real Full Name: Doug Jane
Re: Gudeman caps M49 C5
« Reply #5 on: February 01, 2021, 03:51:15 PM »

So Kai, can you hear distortion products at -120 in the presence of signal? Thems some super ears!
Pages: [1]   Go Up

Site Hosted By Ashdown Technologies, Inc.

Page created in 0.074 seconds with 20 queries.