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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: The KR 2A3.... posted by Bryan F. on August 24, 1999 at 14:17:36:
what I read in the specs. I would refer you to Doc's comments about power ratinges and manufacturers claims in the archives.Ron has posted the KR spec sheet at his site which cites a 3.5W output at 300V, 55mA, meaning plate dissipation of 16.5W. Now if you look at the max operating conditions you will see plate dissipation max is 18W, which is obtained at either 90ma and 200V or 350V and slightly over 51mA. There are other conditions of course, but those represent the maixima in current and plate voltage respectively.
It's hard to get and extra 1.5W of power poutput with an incremental increase of the same 1.5 W in plate dissipation. It took 16.5W of dissipation to get the tube to put out 3.5W. I'm not going to say it absolutely impossible to squeez 5 big ones out of the tube, but of what quality and for how long. At $400 per pair, I don't want to run 'em pedal to the metal.
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Follow Ups
- I only know... - Phil Sieg 08/24/9915:07:36 08/24/99 (1)
- Re: I only know... - Doc B. 10:15:45 08/26/99 (0)
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