Pio russian capacitor K42-11...is good ? - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th October 2010, 07:12 PM   #1
aldovan is offline aldovan  Brazil
diyAudio Member
 
Join Date: Jul 2005
Location: Curitiba
Default Pio russian capacitor K42-11...is good ?

This K42-11 is really a paper in oil capacitor ?
Work fine in audio coupling or the K40Y-9 is best ? Any experience ?

Thanks,

Aldovan
  Reply With Quote
Old 26th October 2010, 07:45 PM   #2
lem8r is offline lem8r  Ukraine
diyAudio Member
 
Join Date: Jan 2010
Location: Chernivtsi
Send a message via ICQ to lem8r Send a message via Skype™ to lem8r
K42-11 is metallized paper capacitor
  Reply With Quote
Old 26th October 2010, 08:20 PM   #3
piano3 is offline piano3  United Kingdom
diyAudio Member
 
Join Date: Aug 2010
Location: London,UK
K42Y-2 are metallized paper in oil but K40Y-9 are metal foil,paper in oil. Both are excellent(if you like PIO;not everyone does)and beautifully constructed, although,in theory, the K40Y-9(much bigger) should be better.
  Reply With Quote
Old 26th October 2010, 08:54 PM   #4
piano3 is offline piano3  United Kingdom
diyAudio Member
 
Join Date: Aug 2010
Location: London,UK
The different suffix,11, may mean it is a variant for special purpose,for instance,high frequency use. I am sure some member of the forum will know this.

Actually, I have just looked at the ones you mean(which I have not tried) and they seem to be large value lower voltage without the usual glass sealed steel case.

I did not see post number 2- yes,probably no oil!

Last edited by piano3; 26th October 2010 at 09:20 PM.
  Reply With Quote
Old 26th October 2010, 09:32 PM   #5
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
K40 are better for amps with no feedback around caps applied. With feedback I sense no difference.
__________________
The Devil is not so terrible as his math model is!
  Reply With Quote
Old 27th October 2010, 01:33 AM   #6
aldovan is offline aldovan  Brazil
diyAudio Member
 
Join Date: Jul 2005
Location: Curitiba
Default K42Y-2 is a PIO capacitor ?

Friends

Some time ago I got a lot of K42Y-2 tubes in ebay.
I make a comparation with a old ( 60s) brazilian made PIO capacitor( the brand make this oil capacitor until today here) and the brazilian sound best...this K42Y-2 is really PIO or for the russians sellers PIO is Plastic In Oil ?
In ebay have a confusion and few information about the material used in this russian capacitors...

Aldovan
  Reply With Quote
Old 27th October 2010, 06:15 AM   #7
lem8r is offline lem8r  Ukraine
diyAudio Member
 
Join Date: Jan 2010
Location: Chernivtsi
Send a message via ICQ to lem8r Send a message via Skype™ to lem8r
Here is some info from Russian book:

Low voltage, low frequency caps:
Paper: КБГ (КБГ-И, КБГ-МН, КБГ-МП), ОКБГ (ОКБГ-И, ОКБГ-МН, ОКБГ-МП. ОКБГ-М), БГТ, К40П-2, К40У-5, К40У-9, К40-11, БМ-2, БМТ-2
Metallized paper: МБГ (МБГП, МБГЦ), МБГИ, МБГН, МБГО, МБГТ, МБГЧ (МБГЧ-1, МБГЧ-2), МБМ, КМБП, К42У-2, К42П-5, К42Ч-6, К42-4, К42-8, К42-11, К42-18, К42-19
That's all I can find
  Reply With Quote
Old 27th October 2010, 04:30 PM   #8
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Here you go: translated Russian table about digits and designations.

Google Translate
__________________
The Devil is not so terrible as his math model is!
  Reply With Quote
Old 27th October 2010, 04:35 PM   #9
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Quote:
Originally Posted by Wavebourn View Post
Here you go: translated Russian table about digits and designations.

Google Translate
Very useful information.

I'm actually surprised at how well google translate worked on this page - it's completely readable..
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  Reply With Quote
Old 27th October 2010, 04:43 PM   #10
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Quote:
Originally Posted by kevinkr View Post
Very useful information.

I'm actually surprised at how well google translate worked on this page - it's completely readable..
Except 76, it is lacquer-film.

Google translate gets better and better, thanks to many contributors. I myself contribute almost every time I see incorrect translation. I wish my English would improve so fast.
__________________
The Devil is not so terrible as his math model is!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Russian PIO caps. Should I use them? G Tubes / Valves 98 16th August 2014 11:41 AM
K40 or K42 Russian PIO: what would you use/recommend? jarthel Tubes / Valves 4 5th December 2011 01:21 PM
2.2Uf PIO Russian capacitors gaborbela Swap Meet 1 5th January 2009 02:54 AM
Cheap Russian 2.2uF 400V PIO Capacitor mus Tubes / Valves 13 18th July 2006 11:56 AM
looking for 1uF at least 200V Russian PIO jarthel Swap Meet 2 10th June 2006 07:23 PM


New To Site? Need Help?

All times are GMT. The time now is 01:08 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2