Disagree about screen grids (g2) on 6p15p

Posted by JJ Triode (A) on July 22, 2013 at 11:45:22

In Reply to: RE: I'm with you brother! Also love them 6V6GT's posted by Eli Duttman on July 21, 2013 at 20:36:46:

Eli,
It is a myth that the 6π15π/SV83 has especially delicate screen grids. I have been using a set of the Russian milspec 6π15π-EB tubes (a matched quad from Decware) in an amp with switchable triode/ultralinear connection to reproduction Dyna ST35 OPTs. In about two years of regular use in both triode and UL modes, I have had ZERO problems with these tubes. B+ is about 300V.

If you look at the spec sheets via the Duncanamps portal, the typical operating point given is 300V a-k, 150V g2-k. This might be what you're going by. But the listed MAXIMUM Vg2-k is 330V (same as a-k). See http://www.tubes.ru/techinfo/HiFiAudio/6p15pev.html. Have you actually had failures with these tubes running at g2 voltages near 300V?

This tube does require an external g3 (suppressor grid, pins 1 and 6) to cathode (pin 3) connection, unlike the EL84.
Regards,
JJ

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Follow Ups Full Thread

Topic - After 13 years I still stick with EL84 - bcguitar 13:29:44 07/21/13 (19)

RE: After 13 years I still stick with EL84 - fstein 07:14:07 07/27/13 (0)

Agree..... - onemug 09:57:45 07/22/13 (2)

I equally love the 6AQ5 - bcguitar 10:31:44 07/22/13 (1)

RE: I equally love the 6AQ5 - Eli Duttman 17:51:15 07/22/13 (0)

I'm with you brother! Also love them 6V6GT's - Mossback 20:00:32 07/21/13 (6)

RE: I'm with you brother! Also love them 6V6GT's - fstein 07:15:47 07/27/13 (0)

RE: I'm with you brother! Also love them 6V6GT's - Eli Duttman 20:36:46 07/21/13 (4)

RE: I'm with you brother! Also love them 6V6GT's - Palustris 15:53:57 07/30/13 (0)

RE: I'm with you brother! Also love them 6V6GT's - Michael Samra 07:20:26 07/23/13 (0)

Disagree about screen grids (g2) on 6p15p - JJ Triode 11:45:22 07/22/13 (1)

RE: Disagree about screen grids (g2) on 6p15p - Palustris 15:49:54 07/30/13 (0)

RE: After 13 years I still stick with EL84 - Michael Samra 14:58:47 07/21/13 (7)

Michael... - onemug 10:04:53 07/22/13 (6)

RE: Michael... - Michael Samra 16:34:55 07/22/13 (1)

RE: Michael... - bcguitar 04:31:40 07/23/13 (0)

I also have a 399 but - bcguitar 10:30:17 07/22/13 (3)

RE: I also have a 399 but - Crazy Dave 14:06:05 07/22/13 (0)

RE: I also have a 399 but - onemug 10:39:39 07/22/13 (1)

I always use Mono FM - bcguitar 11:27:53 07/22/13 (0)

Follow Ups

Disagree about screen grids (g2) on 6p15p - JJ Triode 11:45:22 07/22/13 (1)

RE: Disagree about screen grids (g2) on 6p15p - Palustris 15:49:54 07/30/13 (0)

Disagree about screen grids (g2) on 6p15p

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