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Duelund Universal Bypass Cap

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rollo:
   There is disagreement about using bypass caps. Where would one use these ? Speaker crossover ? Electonics ? How can there be a universal size for bypass. Thought it was 10% of value.
   A buddy installed them on a Duelund CAST 35uf cap in his outboard crossover. Bigger, cleaner and more transparent. The value so small I never thought we would hear any difference. Surprise, surprise.
   Could Steve or Bill Baker chime in please. Or anyone else who knows.


charles

P.I.:

--- Quote from: rollo on September 15, 2017, 08:13:09 AM ---   There is disagreement about using bypass caps. Where would one use these ? Speaker crossover ? Electonics ? How can there be a universal size for bypass. Thought it was 10% of value.
   A buddy installed them on a Duelund CAST 35uf cap in his outboard crossover. Bigger, cleaner and more transparent. The value so small I never thought we would hear any difference. Surprise, surprise.
   Could Steve or Bill Baker chime in please. Or anyone else who knows.


charles

--- End quote ---
Do I know?  Only subjectively.  I have tried to measure the changes and I don't think I have a sensitive enough )-scope or audio editing rig.  The editor I use is only good to 96K so... 

I have never heard a downside to bypass caps.  Acouple if times the addition produced iffy changes, but most of the time I have found them to be beneficial.  I typically do the John Curl method: 10%... 100 + 10 + 1 +.1 to infinity and beyond  8)  Often I'll use whatever I have that is close.

Recently I found that using bypass caps on Folsom's 7297 amp was extremely effective.  Ther output cap chose was a Jantzen 2.2ufd.  I tried several different 0.1ufd as bypasses and settled on the Solen (me that said I would never use a Solen again  :roll: ) Silver Sound 0.1ufd.  Added depth, and an overall better sense of space = soundstage.  Didn't sound bright, just sounded mo' bettah.

I always use bypass caps on power supplies FWIW.

YMMV, after all: it's audio.

Folsom:
Sometimes they just add a bunch of RF. BUT that might be just what you want, because it elevates low level information.

dBe:

--- Quote from: Folsom on September 15, 2017, 03:07:05 PM ---Sometimes they just add a bunch of RF. BUT that might be just what you want, because it elevates low level information.

--- End quote ---
And sometimes not.  "Let things ears be the arbiter!"

Or whatever  :D

P.I.:

--- Quote from: doug s. on September 16, 2017, 01:39:37 PM ---hi jerry ,

i am thinking of using the audyn cap true copper max's in my folsum 7297 build.  what do you think about still using the MKP1837 bypass caps?

thanks!

doug s.


--- End quote ---
  Doug, the proof is in the pudding or so it is said.  That tweak is something that can be easily implemented and reversed, so I would give them a try.  For a buck a piece, it's a no brainer for me.    :thumb:

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