2. amps-preamps
  3. 139915-2206

Bypass capacitor position?

Hi all. I've had a pair of Coincident Frankensteins for a number of years and just opened them up to put in new capacitors.  In doing so, I discovered that the previous owner had installed bypass caps on the power supply capacitor bank.  Those bypass caps are, however, in different positions on the two monoblocks.  Obviously they're both within the same capacitor bank, just linking different parts of the chain, so perhaps that isn't an issue.

Sometimes I think I can hear a small difference in the two amps, but if it's there it's really subtle and I may be creating a self-fulfilling prophecy.

Can anyone provide input on if this fact will change their operation/sound?  I'm trying to figure out whether to cut one of them out and move it, and if so, which is the appropriate position...

Monoblock 1:  https://photos.app.goo.gl/NMGYvU1sdHbGLqb37
Monoblock 2:  https://photos.app.goo.gl/ogDkNio1DyqvM1rs6

Thanks...
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Showing 4 responses by grannyring

grannyring's avatar
grannyring
6,438 posts
 
Nice decision on the Duelund caps! Bypass them with the Duelund .01uf pure silver bypass cap for another nice jump in realism.

Those power supply caps all appear to be in parallel from the pics? Not entirely sure, but it looks so. Can’t see real clearly. If so, all is fine as the actual position of the bypass makes no difference.
grannyring's avatar
grannyring
6,438 posts
 
I agree. All looks fine to me.  Nice to see an all film cap power supply.  Not often done, but really is a nice improvement in SQ. 
grannyring's avatar
grannyring
6,438 posts
 
Erik, 

I also use them extensively, not just once, and they work marvelously with both Jupiter copper foil and Duelund caps in electronics.    Not sure if you actually tried them with these two caps and in electronics...not crossovers? 
grannyring's avatar
grannyring
6,438 posts
 
I did not use the silver bypass caps  on the tinned copper Duelund caps. I only used them with the CAST. It may not sound good with the tinned copper caps, I  just don’t know. I thought you used the original CAST line.
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