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In Reply to: RE: Do russian teflon capacitors lack musicality? posted by vbenonisen on February 15, 2017 at 13:59:47
Over the past year I have spent many hours with 3 caps all at the same value (0.47uF). To my ears in my system, here is how I perceive their sonic signatures:
1. Russian K40 have the most beautiful color and tonal richness. They add some real life like qualities to strings (violin, viola, cello). They are not as quiet as the Jupiters nor Duelunds, and therefore the K40s don't have quite as good a soundstage as the other 2 caps. Transients are a bit softer. All this said, I use them as bypass caps on my 2A3 cathode caps (here, I use the ClarityCap TC 65uF with a 0.47 Russian K40 to smooth things out).
2. The Jupiter Copper Foil caps have a very very neutral sound. No coloration that I can find. They tend to sound a bit dry (NOT etchy) and therefore need some richness to balance them out elsewhere in the amp. Good transients and dynamics, with a very nice black background. Deeper soundstage than the K40s, but once again, the K40s are king when it comes to tonal richness.
3. Duelund Cast PIO are used as my coupling caps between the ECC99 and 2A3 tubes. The Duelunds have the most quiet background and give a deeper soundstage. Duelund's have a neutral to somewhat soft tonal balance, but no extra richness like the K40s.
Since I listen to chamber music most of the time, I need the K40s somewhere in the chain to add some color, but the Duelunds are clearly the most natural sounding and thus, my choice for the highly influential coupling capacitor.
You can't go wrong with any of these caps. I have no experience with the Russian Teflon's but thought you might benefits with an evaluation of the others including the Russian K40s.
Follow Ups:
No contest for me - teflons are cleaner and more detailed. Don't want "colour" or warmth.
Andy,
Just ruminating, but what are you thoughts on the real life "color" and "richness" of string instruments. I am not a musician, so take my opinion with a grain of salt. When I listen to chamber music (which is about 95% of the time), the strings can sound chalky white / grey, they can sound silver / grey or they can sound colorful with rich tonality. Tonight I replaced the Duelund Cast PIOs with the Russian K40s. Immediately the color and rich tonality came back to the strings. I can't say with 100% assuredness, but real life string sounds do have color and are very rich. Probably richer than any of our systems will produce. IF this richness and color is accompanied by great transients and dynamics, then we have something more lifelike than not.
Of course, my idea of "color" and "richness" is purely subjective and system dependent. So, while the K40s are sounding mighty nice tonight in my system, they might not compliment your system or others like it compliments mine. Please let me know your opinion on this.
Thanks,
Pat
I use the FT2s in the larger Sherwood S-5000.Andy,keep in mind that the FT2s that are rated at 200v go 785vdc before they show any leakage.The voltage on these caps are way under rated.
The color and warmth disappears on the k40 over time as the cap breaks in.You still have a slight but not as much.Putting silver plated stranded leads on the K40s like I do with the FT2s helps a lot.
There is another Russian cap that is killer and that's the silver mica SSG.The biggest is .1uf at 500v but they sound fantastic.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Let me ask you a queston do the k72 teflon sound like the ft's?
I used a .056 1000v k72 for cathode bypass along with other capacitors and it ruined the sound has a very SMOOOTH/CREAMY vague plastic sound comes to mind, not too good IMO
I would like to try the ft series russian teflons. ? will they sound the same???
Lawrence
Let me ask you a queston do the k72 teflon sound like the ft's?
Not from my experience.I have three boxes of the .1 at 500v K72s I bought back in 2004 and I used 4 of them and took them back out and put the k40s back in.I even tried to trade them for .1 600v k40s even up and nobody would do it.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Sorry not asking for a comparo between k40's to russian k72 I am asking if the k72 sound like the ft series russian teflons?
Thanks
Lawrence
Lawrence
Sorry if I didn't make myself clear but the K72s don't sound like the FT series at all IMHO.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
"I am asking if the k72 sound like the ft series russian teflons?"
No. Unless you remove the steel case.
Something about the steel case on the k72 ruins the sound.
The ft series have Aluminum cases and sound great, neither adding or taking away anything.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
.
I did it with a tubing cutter. I cut as close to one end as I can then as close to the other end as I can.
The ends pull free and there's a wire connecting to the foil.
Once those are gone the can slides off.
I wrapped mine in plumbers teflon tape to keep the cap from unwinding.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
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