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

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   Message 51,922 of 52,877   
   Phil Allison to All   
   Re: SET amplifier Q   
   06 Nov 12 11:31:45   
   
   From: phil_a@tpg.com.au   
      
   "John L Stewart"   
      
   >   
   > Phil has shown us that the harmonic content of the amp he has for repair   
   > varies quite a bit as the power level is changed.   
      
   ** Duh  !!  The percentage goes up with output level.   
      
   You cannot stop paraphrasing a false characterising  -  can you  ?   
      
      
   > I would not depend on   
   > curvature correction as a cure for amp distortion.   
      
   ** Pompous bullshit and a classic " straw man " fallacy.   
      
      
   > The THD may go down   
   > but what about the higher order harmonics & IM?   
      
      
   ** Converting a lot of 2H into a small amount of 3H can only be good.   
      
      
   > It has been shown by many tests that these are the objectionable   
   > components in the reproduced   
   > sound.   
      
   ** Blah, blah, blah....   
      
   Another fuckwit "straw man" fallacy.   
      
   10% 2H distortion ( as seen with many SET amps) represents a  HUGE  amount   
   of IM  with a complex wave  -  maybe as much as 50%.   
      
   Reduces music to purest mud.   
      
      
   ....   Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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