I still bypass the caps as in the article. Others just use .47 and .1 uF, probably due to cost.
Try it, you can always remove them and let us know your findings.
I built a regulated supply for my Mac Mini, then added these caps to output and yes even on a computer you can hear an improvement.
I believe you ca do a search for the article, it was also published somewhere else.
Rush
I agree, there is nothing new, my work is based on 1950's technology. Also read the work done by John Lynsley-Hood, especially with bypass caps across the diodes in the power supply. In fact my power supply for my moscode comes from that era and I have never seen anything similar anywhere else.
Mac
On another thread I talked about the issues, in particular what the spacing of film cap values should be, this summarises it: http://www.diyaudio.com/forums/powe...f-m-cap-supreme-bypass-cap-2.html#post3151249.
If you use the "wrong" combination of values many times you'll get away with it by virtue of having enough resistance in the leads and wiring hooking it together to damp impedance resonances. But not always ...
Frank
If you use the "wrong" combination of values many times you'll get away with it by virtue of having enough resistance in the leads and wiring hooking it together to damp impedance resonances. But not always ...
Frank
One more thing I should mention- Morgan believes that with modern electrolytics, bypassing is moot, and even more so with a few inches of wire lead. I suspect he'll talk about his measurements when BVA2 comes out. In his view, the Kelvin connection far outweighs the choice of dielectric for power supply bypasses.
I was geting on a plane earlier when i posted. Since then I did a google search for Walt Jung, Services and found his website, in the classic articles is his and Richard Marsh's 2 part article published in Audio magazine in 1980, it was also published in Audio Ameteur around the same time.
It is a long read, and the by-passing of electrolitics is on page 8 of the second part.
Proof is in the pudding, Ameteurs seldom leave things alone and if someone says you don't need them anymore, they better have listened both ways, because us Ameteurs will listen both ways to see if they are right.
Rush
It is a long read, and the by-passing of electrolitics is on page 8 of the second part.
Proof is in the pudding, Ameteurs seldom leave things alone and if someone says you don't need them anymore, they better have listened both ways, because us Ameteurs will listen both ways to see if they are right.
Rush
I agree, these are even better than motor run caps and much smaller.
Check out Clarity Cap's TC series, with these you don't need to bypass an electrolytic, just replace it... It has made huge improvements to my amps, well worth the money.
These are very similar to large value film caps developed for wind turbines that you can get at many electronics parts supply places, but the prices are about the same....
ClarityCap TC Series Film Capacitor
I have a small amp so the prices weren't too bad, two 110 uF caps are $100. I am also running motor run caps in parallel to increase capacitance at a lower cost. But removing the electrolytic was a huge improvement. From my limited experience, the TC series caps are a huge improvement over a bypassed electrolytic, which was also the case in my preamp...
The other factor is that with the TC series caps you don't need as much capacitance, so you could likely get away with using the ~200 uF caps instead...
People spend all sorts of money on stuff that makes tiny differences... this is a HUGE improvement over running electrolytics, with or without bypasses. I spent $180 on the TC series caps in my amp and preamp, IMO it was one of the best bang for the buck upgrades I've ever done.
They have an alternative definition of Farad?
lol, with PS caps there isn't just one value that will work out... do your own research on the subject if it interests you rather than making snide remarks.
A+ This works, however you can get carried away with it. Today I just make space in my projects for film and avoid electrolytics as much as possible.
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