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In Reply to: RE: no evidence that the two versions should sound the same posted by Bob_C on April 17, 2014 at 13:30:24:
"Just curious, what actually is your definition of tweaking?"
Tweaking is making changes on a purely experimental basis without any substantive underlying theory. In other words, trial and error. It may involve listening, measurement or some combination thereof.
This is how I started. My uncle had a Dynaco mono block tube amplifier and it didn't sound good. We got a bunch to test equipment and noticed that the square wave response was poor. We then changed various components in the feedback path for ones with different values and observed what we saw on the scope. Eventually by trial and error we thought we had fixed the amplifier as the square wave response was now good and the distortion and power measurements were unchanged. We hooked it up to the speaker and before long we observed that the plates of the output tubes were now becoming brighter and brighter red. Fortunately, we didn't damage the tubes or burn out the speaker. Back to the drawing boards and we tried again, this time after a little investigation of why were were getting oscillations. A proper engineering approach would have included an understanding of poles and zeros and other aspects of electrical engineering. My Uncle was an artist, textile designer, and former art professor. I was a 13 year old kid. Years later I understood what had happened.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
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Follow Ups
- RE: no evidence that the two versions should sound the same - Tony Lauck 13:51:00 04/17/14 (3)
- RE: no evidence that the two versions should sound the same - Bob_C 14:09:14 04/17/14 (2)
- RE: no evidence that the two versions should sound the same - Tony Lauck 17:18:48 04/17/14 (1)
- RE: no evidence that the two versions should sound the same - Bob_C 17:27:17 04/17/14 (0)
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