Thanks. Can you share this reliable experimental data with us? IMHO debating these issues in qualitative terms is meaningless. Turntables are first of all a technical subject and can be debated in technical terms with associated numbers.
What I wanted to focus is simply accuracy, nothing else. Trying to mix it with very short term variations will not help to debate it. .
Fwiw, the quote mechanism here does not include quotes of others within itself, so you may need to back to msg #337 for the full quote (above.)
Micro, please note my mention of having
experiential data, not experimental data. So you may be dissappointed in this reply. I can give you the data given me by GPA about the two tables I directly compared (same armboard, arm, cartridge.) Some of this is in my threads on the Monaco 1.5 and 2.0. Their measurement equipment goes out to seventh decimal place.
v1.5: Peak error from 33-1/3 is 0.0007% (7ppm). Read of platter encoding track is >10,500 times per second. Controller software is v. sophisticated with predictive capability, not just reading error but able to calculate how far an error may extend.
v2.0: Peak error from 33-1/3 is 0.0001% (1ppm.) - actual platter motion. Read of encoding track is 166,289 times per second (15X the 1.5.) Controller can activate >1000 motor updates per second. (Actually the numbers are much better than these; with my NDA I can give only published specs.) Depending on many variables, optimal is one correction per side.) Modern digital technology in the service of analog accuracy.
We see the numbers, go okay, and glaze over. The aural reality is significant and easily heard.
It would be interesting to learn about the motor and controller and see specs for the AF0.
My question concerning digital was simple - do you think that your comment
also applies to a digital playback system. It is extremely simple to emulate such differences of speed in digital.
If the analog of a spinning vinyl record is a spinnging disc, I cannot see why the comments on speed accuracy would not apply. But I know little about the mechanical technologies. I would guess a CD itself has encoding to assist gauging how it is spun. I read that timing and timing variations in digital technology (jitter?) are critical issues.
Music occurs in time. In music reproduction, he who controls time controls the source and he who controls the source controls the reproduction.