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In Reply to: RE: Address the sound quality of ELECTROLYTICS on every Rk in the amp. posted by drlowmu on March 25, 2014 at 08:53:23
...decoupling, and 'EM7-powersupply caps in my Franks with BlackGates. The latter caps will be VK-series 150/350s, bypassed with 0.47 SoniCap Platinums.
For main-PS caps, I'm now leaning toward the WIMA 600VDC caps that Mike Samra mentioned in the linked thread...but I'm a relatively long way away from that as that will be probably the 2nd part of my parts-upgrade project.
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Tin-eared audiofool, large-scale-Classical music lover, and damned-amateur fotografer.
William Bruce Cameron: "...not everything that can be counted counts, and not everything that counts can be counted."
Follow Ups:
The WIMA DC-Link caps, probably 800 VDC rated, would be precisely what I would use and suggest!! Black Solen films are NG sounding - terrible, anywheres in a SE amp.
You have to select the amount of capacitance on Rks entirely by ear, not with ANY formula what so ever. Start with a LOW value film. Say 10 uF, and parallel and listen.
There is no electrolytic that is good enough on Rks. It takes MULTIPLE value films, and an EAR, and LOTS of patience ( break in time on a Mundorf Tin Foil film amounted to 900 hours, WHO does that, only Dennis !!! ) and bucks to get right.
Only person in THIS world who knows how to do this is Dennis Fraker, who is UBER experienced at this. Believe me, I have asked and watched him on this !!
Jeff Medwin
...will be lots better sounding than what I started with, 'in spite' of the few BlackGate 'lytics I'll be using.
And maybe it'll have a low-DCR choke in it. :-)
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Tin-eared audiofool, large-scale-Classical music lover, and damned-amateur fotografer.
William Bruce Cameron: "...not everything that can be counted counts, and not everything that counts can be counted."
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Tin-eared audiofool, large-scale-Classical music lover, and damned-amateur fotografer.
William Bruce Cameron: "...not everything that can be counted counts, and not everything that counts can be counted."
-t
.
Jeff
I love the SC plats but .47 doesn't give quite enough capacitance in that position..That is one place if you can fit them in where the KBGs work quite nicely..Even if you went with a 10uf SC poly bypass at around 5uf to 10uf,you would probably love the result.
Honest amplification is better than excessive 2nd order distortion anytime.
Standard 'propylenes don't sound as good as the BGs.
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Tin-eared audiofool, large-scale-Classical music lover, and damned-amateur fotografer.
William Bruce Cameron: "...not everything that can be counted counts, and not everything that counts can be counted."
I have Black gates and I use them as cathode bypass for higher values..What I was speaking of is right here..Try some of the KBG caps for bypass in the power supply..They now have the .15 at 600v but I think the 1uf to 5uf works very well and these caps would be terribly expensive if they weren't surplus military..The reason I always go more on bypass is because film caps,whether they be paper or poly, will deliver the energy at quicker pulses under most listening conditions..Then on higher demanding passages,you go into the electrolytic.
Honest amplification is better than excessive 2nd order distortion anytime.
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