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In Reply to: RE: Favorite output transformers? posted by Triode_Kingdom on October 21, 2014 at 08:59:39
What I am saying is that if numbers are the only thing that matters we would all be listening to solid state gear. Obviously there is more to it than that and your ears are the only thing that can tell you when you finally have it right.
Follow Ups:
" if numbers are the only thing that matters"
No one said any such thing, nor is that what we've been talking about.
You've made it clear that in your opinion, the performance of the amplifier itself is of no importance except as you yourself are able to ascertain it by ear within the system (including environment) as a whole. That concept simply couldn't be more wrong or misguided. You will never assemble a truly high-end system until you've first ensured that each individual component can truly contribute the absolute best of which it is capable.
--------------------------
Buy Chinese. Bury freedom.
".... we would all be listening to solid state gear"
That's not true at all.
SS gear produces high ordered HD and even if it's at very low percentages, it's audible.
I think it's safe to say, if THD was the only thing that matters we would all be listening to solid state gear. But THD tells us almost nothing about how an amplifier will sound.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
"Norman Crowhurst wrote a fascinating analysis of feedback multiplying the order of harmonics, which has been reprinted in "Glass Audio," Vol 7-6, pp. 20 through 30. He starts with one [ideal] tube generating only 2nd harmonic, adds a second tube in series (resulting in 2nd, 3rd, and 4th), and then makes the whole thing push-pull (resulting in 3rd, 5th, 7th, and 9th), and last but not least, adds feedback to the circuit, which creates a series of harmonics out to the 81st. All of this complexity from "ideal" tubes that only create 2nd harmonic!""D.E.L. Shorter of the BBC Research Labs and Norman Crowhurst both proposed weighting harmonics by the square or cube of the order to [better] reflect audibility and annoyance-factor, and it's a shame their suggestions were never carried out. To this day, it's the 2nd harmonics that dominates THD device measurements, but it's the ones that are higher than that (even though they may be 20dB lower) that we hear. That's why a THD spec, without reference to the complete spectrogram, is essentially useless, and not only that, potentially quite misleading."
From Lynn Olson webpage.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Edits: 10/21/14
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