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In Reply to: RE: I agree the plain 6p14p are less rugged... posted by Steve O on March 11, 2014 at 16:22:55
Steve
What about the 6p14p-ER and EV series? Would those be 7189s? The 6p15p I know are EL84s but I haven't got any.
Honest amplification is better than excessive 2nd order distortion anytime.
Follow Ups:
As JJ states, to best of my knowledge and experience the 6p14p-ER and EV are essentially 7189s, maybe even a bit more rugged in the long run. Note that 6p14p is the pretty much the arabic form of cyrillic 6π14π. This Russian designation and transliteration stuff gets so confusing....
It doesn't have the internal connection of the suppressor grid (g3) to the cathode so this has to be applied inside the amp, and there are some differences in the parameters. Decware uses the 6p15p-EV version in some of their smaller amps, and I use them (in PP) in one of mine. The 6p14p with various suffixes is a true member of the EL84 family, and based on what Steve writes and the data sheets, the -EV and -ER are at least pretty comparable to a 7189.
I have been using the 6P14P-EV and ER series as 7189s but I wanted to double check to be sure and you guys confirmed it.I don't pay any attention to the Russian military specs on the tubes because they are application rated and not actual rated.We know this from the 6P3Se saying those tubes have 350v max plate rating which we know is not right because I run them in Mac Mc240s all day long and in VTA ST70s.
Honest amplification is better than excessive 2nd order distortion anytime.
Edits: 03/12/14
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