Posted by kmtang on May 20, 2009 at 05:34:37

Hello Kevin,

I am interested in building a EL34 PP power amp. I prefer to strap the EL34 in triode mode. I am wondering if you could recommend the appropriate type of OPT to be used.


Thanks,
Johnny Tang

• RE: Output transformer for EL34 PP - KevinC 05:43:49 05/20/09 (2)
  In Reply to: RE: Output transformer for EL34 PP posted by kmtang on May 20, 2009 at 05:34:37

  If you have 8 ohm speakers, you can use the LL1663/PP. With 4 ohm speakers, I recommend the LL1682/PP. If you want the flexibility for both, then the LL1679/PP is the best choice.
  
  Kevin Carter
  K&K Audio
  www.kandkaudio.com
  
  

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  • RE: Output transformer for EL34 PP - kmtang 09:00:56 05/24/09 (1)
    In Reply to: RE: Output transformer for EL34 PP posted by KevinC on May 20, 2009 at 05:43:49

    Hello Kevin,
    
    What about LL1623PP?? It should have better performance than LL1663.
    
    Johnny
    
    
    

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    • RE: Output transformer for EL34 PP - KevinC 15:05:05 05/24/09 (0)
      In Reply to: RE: Output transformer for EL34 PP posted by kmtang on May 24, 2009 at 09:00:56

      I wouldn't expect better perfromance from the LL!679AM unless you want more than 40 watts. The bigger transformer offers more flexibility with respect to loading, but the performance at less than 40 watss should be comparable to the LL1663AM.
      
      Kevin Carter
      K&K Audio
      www.kandkaudio.com
      
      

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