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   rec.audio.tubes      Tube-based amplifiers... that go to 11      52,877 messages   

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   Message 52,627 of 52,877   
   electronix4747@gmail.com to Kurt Steffensen   
   Re: 2E22 - "300B Pentode"   
   05 Sep 17 12:41:52   
   
   On Friday, July 31, 1998 at 3:00:00 AM UTC-4, Kurt Steffensen wrote:   
   > Gent´s.   
   >2E22 is a DHT tube and has a maximum 40 watts (plate + screen) dissipation    
   > I think the mystery is solved.   
   >    
   > 2E22 IS a genuie PENTODE.!   
   >    
   > I am 100% posetive about that.   
   > I have carefully excamined the ones I have got.   
   >    
   > I also now understands why it is refered to as the 300B,   
   > pentode.   
   > The similarity is remarkable.   
   > This can´t hardly be any "accident".   
   >    
   > Even the grid, and the filament, are the same structure.   
   > The five weird WE300B, rings on the plate are even on   
   > the 2E22 plate!   
   > The electrode assembly in the 2E22, are however a higher   
   > quality,simply because it is a modern tube.   
   > (The 300B, being developed in 1928-33)   
   >    
   > 2E22 has smaller bottle than, the 300B.   
   > Also the plate are not as tall, as the 300B.   
   > But as the 2E22 is a 30Watt tube, it all makes sence.   
   >    
   > The NEOTRON,made in France, is certainly a pentode.   
   > (Nothing to form any beams are inside)   
   > The other US, TUNGSOL, I can´t prove. (The micas are not   
   > transparent)   
   > But it is unlikely to me that it should be a beam-pentode.   
   > The 2E24, and 2E26 are also reel pentodes...   
   >    
   > Now, there is the possibility, that the ones made in US are   
   > with beam-plates , and only the European ones are without...    
   >    
   > The arguments for this could be the fact that US-manufacterers    
   > did favour the beam-tubes, and that the EU-manufacterers mainly   
   > produced pentodes.   
   > But it is more likely, to me , that all the 2E22´s are simply   
   > pentodes.    
   >    
   > The nickname "300B pentode" has allways sounded wrong,   
   > in my ears.   
   > But now, after having both of them in front of me, at    
   > the same time, I find myself accepting the name.   
   >    
   > It is certainly a tube to go for.   
   > (I can´t wait to I have the time to design an amp. with it.)   
   >    
   > Halfin in Belgium, and James Whitehouse in Denmark are having    
   > a stock of them. (I do not know their exact prices)   
   > Michael Wiams at Halfin has told me that they sell a lot to   
   > the Japaneese !   
   > I am also pretty sure that Ned Carlsson, can manage to supply   
   > you with 2E22, if needed.(Am I right, Ned ?)   
   >    
   > Anyway, compared to the the KT66,KT77,KT88,6L6 , etc.    
   > - the 2E22 seems a better choice, and at a fraction   
   > of the price, charged for these beam´s.........   
   >    
   > - sincerely Kurt Steffensen   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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