@phoenixengr Bill, I have to agree with you that some of the numbers are too high to be inaudible. Clearly either the listener was not paying attention or was deceiving him or herself on the basis of expectation.
How important is low W & F performance anyway?
I recently completed work on a direct drive motor controller for a turntable mfr with IMHO, rather impressive results (0.004% 2 sigma method, 0.002% RMS). In measuring other tables actual performance (vs published specs) I was shocked at the rave reviews two tables received that have rather lousy measured performance (but impressive specs). It made me wonder whether the goal of ultra low W&F performance was really necessary? I trust the measurements as they were verified by several methods and software tools and they correlated rather closely, yet the reviewers almost universally praise these tables. It made me wonder if the reviewers even know what they are hearing or listening for and not to put to fine a point on it, does it even matter?
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My friend has this horizontal Mitsubishi model, it's Linear Tracking, and QLDD (Quartz Locked Direct Drive). I had it here for a while, kept perfect speed and sounded terrific. I highly recommend the LT20, 22, 30
I have the Vertical Version LT V5 to fit on top of a bookcase
which is Belt Drive, and like my prior Thorens TD124, I need to let it warm up, check/refine it's speed prior to play, then if I hear the speed is off, I would check/adjust it, but only if I hear it. That has not happened, but I would prefer QLDD.
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Dear @phoenixengr : How important?, as a stand alone measure could means very little about quality performance TT as a whole audio item and that measure depends too of the standard protocol to do it as: DIN, IEC, JIS and the like. A TT is surrounded of several other important parameters as S/N, speed stability, arm board isolation, plhynth characteristics, footers, etc. Now, a question to you: can you be aware ( everythibg the same ) between 0.03% and 0.0018%? and how idenfify you that difference by ears? I can’t do it and for me is not important as a stand alone measure and as other member posted the final result during playing is what it matters when every parameter is involved. In the past/vintage specs of TTs in Japan was way important due to very hard competition in between manufaturers and audiophiles were looking and had atraction by overall specs/numbers in those TTs. Instead today almost no one cares or as @lewm posted not even understand its significance.
Btw, excelent achievement your results in that motor controller.
Regards and enjoy the MUSIC NOT DISTORTIONS, R.
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