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Old 2nd April 2003, 05:07 AM   #1
Jesse is offline Jesse  Taiwan
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Default 6H30Pi variants

Hi,

there are different suffix for this tube:

6H30Pi - EH
6H30Pi - EB
6H30Pi - DR

Is there any one knows the difference?

Thanks!

Jesse
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Old 2nd April 2003, 01:25 PM   #2
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Default RE:6H30Pi variants.

Hi,

6H30Pi - EH : normally EH is a suffix used by Electro Harmonix.

To the best of my knowledge they never carried it though so I wonder who's been rebranding those.

6H30Pi - EB : The EB suffix used on Russian tubes indicates special quality such as long life, extra ruggedized etc.

6H30Pi - DR : here's a datasheet:

TUBES.RU

Cheers,
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Old 2nd April 2003, 01:26 PM   #3
TG is offline TG  Ukraine
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Letters in suffixes of Soviet tubes:
E - long life
B - high reliability
D - extra long life
R - extra high reliability
(I, not H) - intended for pulse mode


Good Luck!!!
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Old 3rd April 2003, 12:11 AM   #4
Jesse is offline Jesse  Taiwan
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Thanks, Guys!
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Old 3rd April 2003, 01:20 AM   #5
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All types of 6H30 are <i>good things</i>
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Old 3rd April 2003, 07:26 AM   #6
TG is offline TG  Ukraine
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Quote:
Originally posted by Brett
All types of 6H30 are good things
Nope
Old (<1992) Saratov-made 6N30P-DR ARE good things...
New Sovtek tubes are not...
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Old 3rd April 2003, 08:24 AM   #7
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Default NJET.

Hi,


Quote:
Old (<1992) Saratov-made 6N30P-DR ARE good things...
Interesting...Do you mind telling us more?

Ta,
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Old 3rd April 2003, 10:28 AM   #8
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Quote:
Originally posted by TG


Nope
Old (&lt;1992) Saratov-made 6N30P-DR ARE good things...
New Sovtek tubes are not...
Most of the ones I've used are older, but they're getting harder to get. Do you have a source? I'd like a dozen or so.
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Old 3rd April 2003, 11:39 AM   #9
TG is offline TG  Ukraine
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Default Re: NJET.

Quote:
Originally posted by fdegrove
Interesting...Do you mind telling us more?
You're welcome
Old Soviet 6N30P-DRs were intended for military use ONLY. That's why they have much more rugged construction and closer tolerance than present "consumer" tubes... "Oldies" have lower Rp, higher linearity and can easily handle their 8W dissipation. They also sound much better ...
As for me, new Sovtek ones have somewhat "transistor-like" sound


Quote:
Originally posted by Brett
Most of the ones I've used are older, but they're getting harder to get. Do you have a source? I'd like a dozen or so.
I live in the country wich was a former Soviet republic, so sometimes I have a chance to get several tubes... To collect a dozen, one has to live here for about 5 years, I'm afraid
And I believe that original 6N30P-DRs are not available anywhere else in the world , even Balanced Audio Technology sells Sovtek ones.
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Old 4th April 2003, 07:32 AM   #10
TG is offline TG  Ukraine
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Quote:
Originally posted by TG
And I believe that original 6N30P-DRs are not available anywhere else in the world
Whoops... I was wrong ...
www.tubes.ru currently have some original 6N30P-DRs in stock at $18 each...

Good Luck!!!
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