SET Asylum

Not even going to get an agreement on parts selection

23.125.73.217

PakProtector

In Reply to: RE: Agreed... posted by Ivan303 on February 13, 2022 at 07:06:45

then you can go worry about a 2A3 or one of the 2A3 with additional plate dissipation. And then...
cheers,
Douglas

Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

Follow Ups:

We don't need "an agreement" - just suggestions - andy evans 12:34:17 02/13/22 (10)
Ok, there's no best, we all know that argument.

But the OP is looking for suggestions, so what can we give him?
- My suggestion is to buy or download a few books... - Triode_Kingdom 22:37:56 02/13/22 (2)
  ... on modern amplifier design. Publications like those authored by Morgan Jones, Crowhurst, Rosenblit and many others are essential reading. Once that's been absorbed, and after the OP has searched and read the thousands of previously posted opinions about this on the major audio forums, he'll be in a position to ask a few remaining questions to help him on his way. Of course, if anyone here feels like writing a 500-page thesis on this subject, by all means...
  
  --------------------------
  Buy Chinese. Bury freedom.
  - OK - PakProtector 10:02:14 02/14/22 (1)
    So how long did it take you to get to a decision making point? and, making a prediction here, why is it so short compared to what you suggest to the OP?
    
    All that aside, before building an ultimate amp, one should build several practice amps, as a warm up and educational experience. If nothing else, to discover what you like. Whilst engaged on this task, go and compare the results of these builds to other amplifiers. As many as you can find... :)
    cheers,
    Douglas
    
    Learning to ignore the zealots that tell you that one particular way is best for you is something else to learn.
    
    Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
    - RE: OK - rage 15:35:17 02/23/22 (0)
      "Learning to ignore the zealots that tell you that one particular way is best for you is something else to learn."
      
      some of us take a while to figure this out! :)
- RE: We don't need "an agreement" - just suggestions - PakProtector 13:21:51 02/13/22 (6)
  That 'best parts' is way too deep a rabbit hole. Add to that no common listening experience... LOL
  
  But anyway...coupling caps ought to be Teflon dielectric, and foil electrode. Couple to choose from there. Plate load resistors; non-inductive wire wound. Mills come to mind in particular. Slightly different voicing would be the Kiwame carbon film. On that choice, who's to say one is better than the other?
  
  Assumes resistive load vs inductors( or interstage trans-es) of course.
  cheers,
  Douglas
  
  Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
  - RE: We don't need "an agreement" - just suggestions - Retsel 21:35:03 02/14/23 (0)
    Then there is series feed versus parallel feed....
  - Plate load resistors - andy evans 15:23:44 02/13/22 (4)
    You have my interest here! I was just today putting in a couple of plate load resistors, for which I used older Holco black 1W types.
    
    Is there anything very audible to gain from Mills or Kiwame?
    - RE: Plate load resistors - PakProtector 15:37:52 02/13/22 (3)
      They're bigger than the 1W Holco( which should be treated like 1/2W in order to keep 'em from getting noisy). Am not a fan of colourful components, there were super low L Mills, at perhaps 3W rating and 2x physical size of the 12W. Mike Percey had 'em loooong ago.
      cheers,
      Douglas
      Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
      - RE: Plate load resistors +1 - 91derlust 12:46:26 02/18/22 (2)
        
        In Reply to: RE: Plate load resistors posted by PakProtector on February 13, 2022 at 15:37:52
        
        I've had success with those Mills precision WW. They'd be my go to if they were available.
        Edit: they were the MR200 series.
        
        "Confusion of goals and perfection of means seems to characterise our age." Albert Einstein
        
        Edits: 02/19/22
        
        RE: Plate load resistors +1 - PakProtector 16:57:00 02/18/22 (1)
        
        In Reply to: RE: Plate load resistors +1 posted by 91derlust on February 18, 2022 at 12:46:26
        
        "if they were available"...yep, that is certainly about the size of it. Would love to be able to get 'em from Mouser.
        
        Douglas
        Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
        
        RE: Plate load resistors +1 - hottattoo 13:27:42 03/24/22 (0)
        
        In Reply to: RE: Plate load resistors +1 posted by PakProtector on February 18, 2022 at 15:57:00
        
        I think Ivan 303 hit the nail on the head---WHAT speakers will be used. room size, desired volume ??? These should be your first considerations before dropping any money on a 2A3 amplifier.
        
        IMHO, any speaker less then 100 db.sensitivity is out for any REALISTIC reproduction of most symphony and dynamic music. If you are bi or tri amping , that is a different story. Getting good woofer control is the main problem for low wattage SET amps. Using good 2A3 amps on horns can be fantastic !!
        
        Good luck,
        Joe

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