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Old 29th May 2009, 04:15 PM   #11
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You could get a place on www.4shared.com ( free version). Give us the URL and we can all download from there.
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Old 29th May 2009, 04:44 PM   #12
DHT112A is offline DHT112A  United States
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Ok, here it is

http://www.4shared.com/file/10857196...ube_cross.html


Can't vouch for accuracy.
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Old 29th May 2009, 05:19 PM   #13
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That's really cool! Well done.
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Old 29th May 2009, 05:34 PM   #14
w5jag is offline w5jag  United States
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Quote:
Originally posted by tubelab.com


I have found out that many of those Ebay ads that claim to be "close" "similar" or "equivalent" are pure BS. Some don't even have the same number of pins.
I bought one of those cheap push pull "6AQ5" Chinese amplifiers off Ebay.

I can't say I was real happy to find out that Russian and Chinese "6AQ5" have 9 pins.

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Old 29th May 2009, 05:54 PM   #15
w5jag is offline w5jag  United States
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Thanks for that guide, it should be interesting reading.

Page 4 of the guide lists 6P14 as equivalent to 6BQ5 and 6GK6.

6BQ5 and 6GK6 are pretty similar, but they have materially different pin outs.

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Old 29th May 2009, 05:54 PM   #16
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Quote:
Russian and Chinese "6AQ5" have 9 pins.
That was the example that I remember. Don't fall for their "WE417A equivalent" either. I am glad to see that neither of these are listed in DHT112's book either. These "equivalents" are likely the work of an over ambitious Ebay seller.

DHT112, thanks it is a good reference to clear the confusion.
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Old 29th May 2009, 06:06 PM   #17
Giaime is offline Giaime  Italy
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I wrote this article some time ago, published in an italian hi-fi magazine:

http://giaime.altervista.org/china.html

I hope you find it useful
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Old 29th May 2009, 07:19 PM   #18
w5jag is offline w5jag  United States
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Quote:
Originally posted by tubelab.com


Don't fall for their "WE417A equivalent" either.

Ditto 6N3P, their advertised "equivalent" to 5670 / 2C51. Pinout is completely different.

That little Chinese amp also taught me that incompatibility the hard way.

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Old 29th May 2009, 08:06 PM   #19
w5jag is offline w5jag  United States
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Quote:
Originally posted by w5jag



Ditto 6N3P, their advertised "equivalent" to 5670 / 2C51. Pinout is completely different.

That little Chinese amp also taught me that incompatibility the hard way.

Win W5JAG
I've thought about this a little, and it seems like it may not have been pinout, but some other physical incompatibility between all of the 5670's I own, and the 6N3P sockets in that little amp.

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Old 29th May 2009, 09:06 PM   #20
Arnulf is offline Arnulf  Europe
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Many auction titles that mention "XYZ compatibles" were really meant to say that the tube on sale performs very similar to tube XYZ while not neccessarily having the same pinout. An example of such tube would be 6N2P, a replacement for 6.3V heater wired ECC83/12AX7. It is not fully compatible though (its heater is hardwired in parallel). Some other tubes not only differ in exact pinout but also have different basing (9-pin noval instead of 7-pin mini for example).

So do remember to always check the datasheet

I had a quick look at the abovementioned PDF and it seems to be accurate for all russian tube types I could remember off the top of my head - it doesn't even list said "semi-compatibles" such as 6N2P/ECC83.
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