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Old 27th November 2002, 12:16 AM   #1
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Default WTB: 6922 tubes

NOS or used good stuff like Telefunken, etc.
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Old 27th November 2002, 12:48 AM   #2
PassFan is offline PassFan  United States
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Is'nt that a 6DJ8?
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Old 27th November 2002, 01:22 AM   #3
JoeBob is offline JoeBob  Canada
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Seems to me the 6922 and 6DJ8 are slightly different (not very much).
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Old 27th November 2002, 01:26 AM   #4
halojoy is offline halojoy  Sweden
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Question Made in Russia

What I have understood, 6DJ8 is a very good replacement for 6922.
6922 is mostly made in the East, Russia...

But we wait some few minutes,
fdegrove will tell us!
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Old 27th November 2002, 01:44 PM   #5
halojoy is offline halojoy  Sweden
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Default fdegrove

some info please
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Old 27th November 2002, 01:49 PM   #6
dhaen is offline dhaen  Europe
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Wake up Frank
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Old 27th November 2002, 01:52 PM   #7
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Default 6922 source

Hi Halojoy,
You are probably right. All the 6922's that I have ( about 18 ) are all Sovtek from Russia. Maybe these are also made elsewhere with the same number but I think the 6922 originated in Russia.
I read somewhere that Russians were better at tube design because they stayed with it much after the rest of the world switched to transistors. In addition tubes are supposed to be better for defence applications due to its resistance to radiation.
At least they were. I do not know the present situation.
Does anyone else out there have more details?
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Old 27th November 2002, 09:18 PM   #8
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Amperex 6922 is one of the best 6922 around, Mullard and Telefunken also has 6922 but they are less popular. It's a bit different than the 6N1P. I'm not sure about the 6DJ8.
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Old 27th November 2002, 09:40 PM   #9
halojoy is offline halojoy  Sweden
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Default 6922/E88CC - 6DJ8/ECC88

These tubes belong to a similar group.
Called 6DJ8.

Here is some reading:

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Old 27th November 2002, 10:24 PM   #10
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Default Uh,Oh...


Sorry guys I hadn't subscribed to this thread....
if one of you would have pushe my e-mail button.


So,what to buy?

The russian 6922 when selected for low noise are to my ears amongst the best 6DJ8s currently produced.
the 6922 reference is an industrial/pro one that is to same spec as the European E88CC.

If you prefer to go for NOS tubes:any Telefunken tube is worth the money BUT be ware there are some fakes going around even in TFK boxes or TFK tubes manufactured by or major players for them in the early seventies.
I could spill the beans on this but it's worth a story on its own.

The only way to be 100% sure you're getting the real MCoy is :

Buy them in original boxes preferably sealed in the typical cellophane.
Or ask for a certification that they do have the typical TFK diamond shape between the pins before you hand over the hard earned cash.
Test them asap so you're sure they're unused.

Better still then the E88CC/6922 are the hard to come by E188CC/7308 which are very hard to get in reasonable quantities.
They differ mainly in being even less noisy.
This is what I use in a tube MC headamp and they are tightly matched too.

Another one very rare as well is the Cca by Siemens developped for medical purposes (it won't cure tinnitus though).

Yet another little known marvel is the ~ com[atible E288CC/8255
which has smaller mu but is an excellent line stage candidate.

The russian 6N1P is NOT the same tube and will not always work as a substitute for a 6DJ8 and not only because of its' higher heater current requirements.

Other good ones are the US Amperex,the Euro Valvo,Mullard and the Philips SQ range.

Sorry for the late waking up,
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