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In Reply to: RE: Not even going to get an agreement on parts selection posted by PakProtector on February 13, 2022 at 11:11:42
Ok, there's no best, we all know that argument.
But the OP is looking for suggestions, so what can we give him?
Follow Ups:
... 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.
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.
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.
Then there is series feed versus parallel feed....
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?
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.
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
"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.
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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