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Old 29th October 2010, 06:05 PM   #21
M Gregg is offline M Gregg  United Kingdom
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Quote:
Originally Posted by piano3 View Post
Surely PCB's were mainly used in capacitors utilised in power generation- not in the kind of ones we all use?


Motor run, fluorescent gear, HV caps "small and large", army surplus, transmitters, some radio gear, etc etc.

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Old 7th November 2010, 05:51 AM   #22
regal is offline regal  United States
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I have an SET hybrid tube headphone amp. Think of it as a parafeed with the OPT being a very transperant SS buffer.

Well with this amp the coupling cap between the tube and the buffer is the bottneck of the amp (. I compared several caps.)

The russian KY40's I think are over-rated. I found the Jensen and AmpOhm copper PIO caps to be much more transperant, in fact the KY40 seemed to change the sound signature like a lens.
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Old 17th November 2010, 04:37 PM   #23
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Default The differences between these two PIO caps

Hello
I would like to ask for some help
What is the difference between these two Russian capacitor , I think other than the higher voltage.
You can see one marked (was produced?) CCCP and after the usual mark K40Y-9 there is a number 3.
Another does not have.
Also one 10% another 20% tolerance.
Which would be better sound wise. Any advice or experience ,please help I need to buy some of these PIO caps.
The size and voltage not a problem! The circuit let me to use even 100V or less.
Also I read the K75-10 is a great capacitor. Do these sound better than the K40Y-9 type.
Also do these capacitors has signal in/out??
Thank you for your help.
Greetings
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Old 17th November 2010, 05:02 PM   #24
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Quote:
Originally Posted by gaborbela View Post
Hello
I would like to ask for some help
What is the difference between these two Russian capacitor , I think other than the higher voltage.
You can see one marked (was produced?) CCCP and after the usual mark K40Y-9 there is a number 3.
Another does not have.
Also one 10% another 20% tolerance.
Which would be better sound wise. Any advice or experience ,please help I need to buy some of these PIO caps.
The size and voltage not a problem! The circuit let me to use even 100V or less.
Also I read the K75-10 is a great capacitor. Do these sound better than the K40Y-9 type.
Also do these capacitors has signal in/out??
Thank you for your help.
Greetings
The left: 0.22 uF 1000 V, right: 0.22 uF 200 V
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Old 17th November 2010, 05:31 PM   #25
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Hello
Other difference than the voltage!
One is look like made a couple years back made in CCCR , another probably newer.
Also the 10%-20% differences.
But I would be more interested to know which one is better sound wise?
Also the K75-10 is as good than the K40-9Y or may be better?
The problem if I buy these caps I have to buy min 8PC or so .To buy from all to know which one is better a bit waste of money. Plus shipping is not cheap to Canada.
Thanks
Greetings gabor
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Old 18th November 2010, 12:29 AM   #26
piano3 is offline piano3  United Kingdom
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You can see the date codes on the bottom of the picture-the one on the right is the older one. I would not expect a significant difference in sound and if you are short on space then the 200V should be fine as the voltage rating on these caps is usually very conservative. K75-10 is normally used by diy'ers in power supplies(although I am pretty sure they were intended for something fairly exotic originally) and they are really quite big.
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Old 18th November 2010, 03:43 AM   #27
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Quote:
Originally Posted by Wavebourn View Post
Here you go: translated Russian table about digits and designations.

Google Translate

Wavebourn: As always, Thank you for the info.
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Old 18th November 2010, 05:20 AM   #28
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Quote:
Originally Posted by gaborbela View Post
Hello
Other difference than the voltage!
One is look like made a couple years back made in CCCR , another probably newer.
Also the 10%-20% differences.
But I would be more interested to know which one is better sound wise?
Also the K75-10 is as good than the K40-9Y or may be better?
The problem if I buy these caps I have to buy min 8PC or so .To buy from all to know which one is better a bit waste of money. Plus shipping is not cheap to Canada.
Thanks
Greetings gabor
I dont know about sound K40 but i know in Russia best SSG-2, SSG-3 (ССГ-2, ССГ-3)
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Old 18th November 2010, 05:43 AM   #29
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Quote:
Originally Posted by Professor View Post
I dont know about sound K40 but i know in Russia best SSG-2, SSG-3 (ССГ-2, ССГ-3)
Audiophooles believe, they have hard sound: as hard as mica itself.

Teflon in oil has smooth and silky sound.
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Old 18th November 2010, 07:40 AM   #30
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K40U9 excellent decoupling capacitor, very hard to find 400V version nowadays. I got 10 pieces at Unona flee market last Spring and the guy told there would be no more.
I would say K40U9 is the best Russian capacitor sonically, excellent price/performance ratio as well.

imho Duelund Coherent Audio is the best, Mundorf silver-oil is good and not too pricey.
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