Are Chinese 6N2 the same as Russian 6N2P? - 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 29th January 2010, 12:13 AM   #1
diyAudio Member
 
Join Date: Jul 2004
Location: us
Default Are Chinese 6N2 the same as Russian 6N2P?

I did search , but still unsure if the 6N2 is equal to the Russian 6N2P. I'm looking for alternatives to the Chinese 6N2 , so ultimately , I need a tube that will work .
  Reply With Quote
Old 29th January 2010, 12:25 AM   #2
diyAudio Member
 
Join Date: Apr 2004
Location: Monroe Township, NJ
AFAIK, it is. Look at the data sheet. Notice the Hanji character directly adjacent to the 6N2. I can't decipher such things, but a "P" sound would not be surprising.

While the type pins out like a 6922, the triodes are the "same" as those in a 12AX7/ECC83. If the unit you are working on is point to point wired, connecting pins 4 & 5 to a heater power lead and pin 9 to the 2nd heater power lead is all that's needed to use the 'X7. More than 1 decent and affordable 'X7 variant is available.
__________________
Eli D.
  Reply With Quote
Old 29th January 2010, 12:56 AM   #3
ja2dhc is offline ja2dhc  Japan
diyAudio Member
 
Join Date: Dec 2007
Send a message via AIM to ja2dhc Send a message via MSN to ja2dhc Send a message via Yahoo to ja2dhc
Quote:
Originally Posted by homemade View Post
I did search , but still unsure if the 6N2 is equal to the Russian 6N2P.
Here is a datasheets of Russian 6N2P.

http://klausmobile.narod.ru/td/data/_6n2p.GIF

It is identical to Chinese 6N2 as shown below.

http://www.mif.pg.gda.pl/homepages/f.../095/6/6N2.pdf

Both of them describe Mu is 97.5.
  Reply With Quote
Old 29th January 2010, 12:57 AM   #4
diyAudio Member
 
Join Date: Jul 2004
Location: us
Thank you for the data sheet. The 'pre amp' board I'm using is printed circuit. One of these pre-made Chinese SRPP on ebay. I'm using it to amplify a resistor i/v mod in a tda1541 player. One of the tubes was damaged in shipping , so I'm just looking for a tube(s) that will work.
Attached Images
File Type: jpg b_audio_amplifier_tube_01.jpg (169.1 KB, 557 views)
  Reply With Quote
Old 29th January 2010, 01:11 AM   #5
ja2dhc is offline ja2dhc  Japan
diyAudio Member
 
Join Date: Dec 2007
Send a message via AIM to ja2dhc Send a message via MSN to ja2dhc Send a message via Yahoo to ja2dhc
Quote:
Originally Posted by homemade View Post
Thank you for the data sheet. The 'pre amp' board I'm using is printed circuit.
When I went to China as a business trip, I bought a PCB which is a raw
PCB without components assembled for DIY purpose. I analyzed the
circuit schematic and published it in my blog below (sorry written in Japanese,
but you can see photograph).

http://ja1cty.at.webry.info/200912/article_3.html

The schematic uses 6N3 whose Mu is 36. Therefore the amp gain of this
SRPP is 15.5 which is calculated by a circuit simulation.
  Reply With Quote
Old 29th January 2010, 01:29 AM   #6
diyAudio Member
 
Join Date: Jul 2004
Location: us
Quote:
Originally Posted by ja2dhc View Post
When I went to China as a business trip, I bought a PCB which is a raw
PCB without components assembled for DIY purpose. I analyzed the
circuit schematic and published it in my blog below (sorry written in Japanese,
but you can see photograph).

上海で真空管ラインアンプのPCB買いました JA2DHC/JA1CTYのブログ/ウェブリブログ

The schematic uses 6N3 whose Mu is 36. Therefore the amp gain of this
SRPP is 15.5 which is calculated by a circuit simulation.
Very good to know

I purchased 2 of these boards; one uses the 6N2 , the other uses 6N1. Both 'SSRP' config. Seems the 6N2 has a mu of 100 , so I guess the srpp circuit gives a gain of about 50(?). The 6N1 board has lower gain , as expected , with a mu of 30. The 6N2 circuit allows use of a smaller i/v resistor , so perhaps , less distortion(in theory). I'll try some 6N2P-EV tubes in the 6N2 board.
  Reply With Quote
Old 29th January 2010, 05:27 AM   #7
diyAudio Member
 
Join Date: Oct 2009
Quote:
Originally Posted by Eli Duttman View Post
AFAIK, it is. Look at the data sheet. Notice the Hanji character directly adjacent to the 6N2.
The Hanji character directly adjacent to the 6N2 means "type". The whole sentence that line is "6N3 type Dual Triodes".


Chinese 6n2= Russian 6N2P (6h2n in cyrillic?)

Eli is right, there seems to be no Western equivalent. It stuffs two 12ax7 alike triodes with 6922 pin out.

Last edited by sulcorebutia; 29th January 2010 at 05:30 AM.
  Reply With Quote
Old 29th January 2010, 07:42 AM   #8
diyAudio Member
 
Join Date: Oct 2009
Quote:
Originally Posted by sulcorebutia View Post
The Hanji character directly adjacent to the 6N2 means "type". The whole sentence that line is "6N3 type Dual Triodes".


Chinese 6n2= Russian 6N2P (6h2n in cyrillic?)

Eli is right, there seems to be no Western equivalent. It stuffs two 12ax7 alike triodes with 6922 pin out.
typo mistake: The whole sentence in that line read as "6N2 type Dual Triodes".
  Reply With Quote
Old 29th January 2010, 09:42 AM   #9
Arnulf is offline Arnulf  Europe
diyAudio Member
 
Join Date: Feb 2009
Quote:
Originally Posted by homemade View Post
Thank you for the data sheet. The 'pre amp' board I'm using is printed circuit. One of these pre-made Chinese SRPP on ebay. I'm using it to amplify a resistor i/v mod in a tda1541 player. One of the tubes was damaged in shipping , so I'm just looking for a tube(s) that will work.
With your question answered already, I was wondering what the point of using ECC83-like tube in SRPP would be ? If one needs extra drive, a follower (using an '81 or '82) will do better. If extra drive is not needed, then it's a waste of 1/2 of tube.

Last edited by Arnulf; 29th January 2010 at 09:45 AM.
  Reply With Quote
Old 29th January 2010, 12:21 PM   #10
diyAudio Member
 
Join Date: Jul 2004
Location: us
Quote:
Originally Posted by Arnulf View Post
With your question answered already, I was wondering what the point of using ECC83-like tube in SRPP would be ? If one needs extra drive, a follower (using an '81 or '82) will do better. If extra drive is not needed, then it's a waste of 1/2 of tube.


I am quite certain that your assessment is correct. We'll need to blame Lampizator for this , as he is enthusiastic about this type(SRPP). I know little about tube circuits. These boards became available on ebay pretty cheap. And I like the horizontal tube layout , as they fit nicely in most cd players(Philips 1541 types at least). They also have the necessary gain for use with resistor i/v low output.
  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
6N2, 6N6, 6N11 - Please help a beginner! (long) horace Tubes / Valves 41 27th November 2013 07:19 PM
Selling 6n2p lot of 100+ UssrTradeCom Vendor's Bazaar 0 5th January 2010 06:43 PM
6N2 swap tvrgeek Tubes / Valves 3 14th December 2009 07:22 AM


New To Site? Need Help?

All times are GMT. The time now is 06:56 AM.


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

Content Relevant URLs by vBSEO 3.3.2