• RE: AN Kit 1 : upgrade answers - GTCharlie 17:46:29 05/28/07 (3)
  In Reply to: RE: AN Kit 1 : upgrade answers posted by mbhcid on May 27, 2007 at 13:01:04

  I've been tinkering with my AN Kit One for sometime. Caps/resistors/etc... What I've been thinking of - but have yet to find the time to do mathematics (and look for funds) - is regulate the B+ to the final stage. I've been thinking of a series pass - maybe EL34-12AX7 kind of set-up. I wonder if anyone did this ? worth the effort?
  
  

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  • RE: AN Kit 1 : upgrade answers - richardcooper2k 15:28:20 06/02/07 (0)
    In Reply to: RE: AN Kit 1 : upgrade answers posted by GTCharlie on May 28, 2007 at 17:46:29

    if you look on thorsten's website at his 300b legacy power amp, it has valve regulated ht. i don't know enough to say wether you could use this power supply as it is in a kit one, or wether it would need modifying ?
    
    

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  • RE: AN Kit 1 : upgrade answers - limono 08:22:20 05/29/07 (1)
    In Reply to: RE: AN Kit 1 : upgrade answers posted by GTCharlie on May 28, 2007 at 17:46:29

    Did you look at AN P3 schematic. Same tubes a little different configuration
    May be worth to try.
    
    

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    • RE: AN Kit 1 : upgrade answers - GTCharlie 23:55:22 06/27/07 (0)
      In Reply to: RE: AN Kit 1 : upgrade answers posted by limono on May 29, 2007 at 08:22:20

      or you may want to divide the cathode resistors into the two legs. I would imagine this would make for a more uniform dissipation. So 1k8 on each leg to make 900R total. But you still need the same 15-18w power capability. Maybe two Mills 3k6/12w in parallel on each leg ... I used this in my 2A3.
      
      

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