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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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In Reply to: Thanks, Kurt... posted by Lew on August 30, 2011 at 13:29:50:
It is possible to resistively inject a small signal to extract the small signal output impedance (with some error) as that will not disrupt everything.It is not possible to obtain impedance information by messing up the output stage's normal operation by jamming into it a very large signal. The fact that it takes it is a good thing. But that's ruining the amp's own efforts and it is as if, for an analogy, in particle physics he has the worst heaviest probe to measure position while that completely ruins any knowledge of it's velocity.
But this whole thing about all the old claims would never have been an issue if the claims were 100% in line with classic definition, accurate study, and world class measurement techniques including having guardband.
Ralph would never yield to those who already knew what they had in an M60 amp, and so that is a problem with the people who know test and measurement. It makes us want to scream that someone gets to claim something others will not due to better adherence to old definitions and careful factual argument.
There was no personal issue until Ralph saw people who don't like his sloppy methods as some kind of troublemaker. No, they do want accurate information spoken. John Broskie wrote that sarcastic article after losing it when encountered with no yielding to the facts of electrical engineering.
But we CAN as consumers brush it all aside and not give a hoot! The amp is a fantastic performer. It's real measure is how it sounds, and how reliable it is. I can recommend M60 amps like the one I had.
Edits: 08/30/11
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Follow Ups
- Paul Speltz did the wrong thing - kurt s 18:10:04 08/30/11 (5)
- RE: Paul Speltz did the wrong thing - Lew 07:08:04 08/31/11 (4)
- Here is Paul Speltz' post on circlotron output Z... - Lew 07:40:22 08/31/11 (3)
- I see that really Paul almost did the wrong thing. - kurt s 20:02:04 08/31/11 (2)
- Output Z of cathode follower... - Lew 20:51:46 09/01/11 (1)
- RE: Output Z of cathode follower... - kurt s 00:42:47 09/02/11 (0)
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