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Old 27th May 2006, 04:17 PM   #1
Rispoli is offline Rispoli  United States
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Default unfamiliar tube brand

Not sure what brand of tube this is that I have. I may want to replace these tubes with the same brand. If anyone knows what brand, I would appreciate it. thanks in advance.....
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Old 27th May 2006, 06:05 PM   #2
cd813 is offline cd813  China
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It's brand is "FUNKWERK",The east Germany makes
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Old 28th May 2006, 12:57 AM   #3
Rispoli is offline Rispoli  United States
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thanks for the info. I searched quite a few tube supplier web-sites and could not locate what brand this was....
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Old 28th May 2006, 03:06 AM   #4
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I have 3 russians 6sn7GT who have a "CCCP" on the case. Is this a good valve?

Thanks,
Felipe
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Old 28th May 2006, 05:07 AM   #5
cd813 is offline cd813  China
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the "cccp"not brand ,it's russia simple form
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Old 28th May 2006, 05:11 AM   #6
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What manufactures make this valve with this case? A friend called me who is CCCP is Union of Soviet Socialist Republics...

But the question isn't the manufacture, is if this is good or isn't good.

Thanks,
Felipe Navarro
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Old 28th May 2006, 05:31 AM   #7
cd813 is offline cd813  China
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Quote:
Originally posted by mod_evil
What manufactures make this valve with this case? A friend called me who is CCCP is Union of Soviet Socialist Republics...

But the question isn't the manufacture, is if this is good or isn't good.

Thanks,
Felipe Navarro

What is the good standard?Manufacture craft aspect,Soviet Union's tube is rigorous also is excellent.

But,Its music flavor is not very splendid.
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Old 28th May 2006, 05:53 AM   #8
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Quote:
Originally posted by mod_evil
What manufactures make this valve with this case? A friend called me who is CCCP is Union of Soviet Socialist Republics...

But the question isn't the manufacture, is if this is good or isn't good.

Thanks,
Felipe Navarro
It's probably a Sovtek. I used the Sovtek 6SN7 in a recent project as a cathode follower driver. Works just great: the characteristic seems quite close to the plate characteristics of the RCA 6SN7 (measured gain and Q point were quite close to the design nominal values) the Sovtek includes grid radiators that other brands don't include, the tube isn't at all microphonic in that sharp rapping on the envelope didn't cause any disturbances when o'scoping the output. A lot of US produced 6SN7s seem to be horribly microphonic.

No complaints here.
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Old 28th May 2006, 06:13 AM   #9
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In this photo you can see 2 of mine 3 CCCP colection... I will mount a SRPP pre-amp with these tubes. :-)

Click the image to open in full size.

Thanks for these coments,
Felipe Navarro a 15 yrs old audiophile boy.
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Old 28th May 2006, 06:33 AM   #10
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Quote:
Originally posted by mod_evil
[B]In this photo you can see 2 of mine 3 CCCP colection...
Do you have a pic with the other text on the box?

dave
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