I did not know Bruce T was responsible for the SOTA vac hold down system….
Thx for sharing that.
Thx for sharing that.
3 New UBER Decks - Is this Turntable's SwanSong? 🦢
Michael Fremer has recently reviewed three new turntables designed to be the 'Last Word', 'Cost no Object' STATEMENTS!!!!........Do I recall hearing this claim before??
I love Mikey and have followed (and trusted) him for decades.
He has been the longest and foremost published 'champion' of the superiority of vinyl (uber alles) in the world.
I am thus ecstatic that he has been able to listen and compare these decks in his own room, with his own equipment virtually side-by-side
It's almost a 'given' that he will be the ONLY person on earth given that privilege....
So what Mikey HEARS.....is indisputable
Given his 'character' and desire for accuracy and honesty.....years ago, Mikey started including some 'objective' measurements in his turntable reviews.
These measurements were done utilising the Dr Feikert PlatterSpeed App which has since been discontinued.
As the App only worked with the Mac iOS of many variations ago.....Mikey has kept an old iPhone which can still operate the App.
The PlatterSpeed App had a few technical limitations.....
Foremost amongst these, was its dependence on a 7" record with an embedded 3150 Hz Frequency track to produce a test-tone which the App could process through its algorithm to produce the graphs and all the corresponding numbers.
To stamp hundreds of 7" discs with perfectly 'centred' HOLES is a nigh impossibility.
It's almost impossible to do it with a 12" disc!!!
This means that ALL the figures produced in their Chart Info are dubious and mostly UNREPEATABLE!!!!
I have Chart Infos for the same turntable/arm combination but with the 7" disc moved slightly producing different figures.
I even have Chart Infos produced with the same turntable but different arms ALL with different figures (the arms are in different positions surrounding my TURNTABLE).
So what is my point......?
The GRAPH produced with the PlatterSpeed App is accurate and USEABLE when looking at the 'Green' Lowpass-Filtered Frequency.
If the hole was PERFECTLY centred.....this 'Green' line would be perfectly STRAIGHT......but only if the turntable was maintaining its speed PERFECTLY.
The wobbles in the 'Green' line are due to the hole's eccentricity as well as any speed aberrations.
So the best performing turntables are those with the most constant and even wobbles approaching as closely as possible a STRAIGHT LINE.
It appears that SAT have corrupted what is a very good DD Motor unit....🥴
Mikey says that the OMA-K3 produced the best PlatterApp figures of any turntable he has tested 👏
Does this mean that the OMA-K3 is the most accurate turntable of these three decks.....or maybe of ALL turntables?
Mikey can't (and won't) test and review products from the past which are no longer produced because that's not his job!
But wouldn't it be great if someone WOULD review products from the past against the modern equivalent?
Classic turntables with reputations....gravitas...like the legendary EMT 927 and Micro Seiki SX-5000 and SX-8000.
And what about the NOW lauded Japanese DD Turntables from the '80s...the 'Golden Age' of Analogue?
Here endeth the Sermon for today 🤗
I love Mikey and have followed (and trusted) him for decades.
He has been the longest and foremost published 'champion' of the superiority of vinyl (uber alles) in the world.
I am thus ecstatic that he has been able to listen and compare these decks in his own room, with his own equipment virtually side-by-side
It's almost a 'given' that he will be the ONLY person on earth given that privilege....
So what Mikey HEARS.....is indisputable
Given his 'character' and desire for accuracy and honesty.....years ago, Mikey started including some 'objective' measurements in his turntable reviews.
These measurements were done utilising the Dr Feikert PlatterSpeed App which has since been discontinued.
As the App only worked with the Mac iOS of many variations ago.....Mikey has kept an old iPhone which can still operate the App.
The PlatterSpeed App had a few technical limitations.....
Foremost amongst these, was its dependence on a 7" record with an embedded 3150 Hz Frequency track to produce a test-tone which the App could process through its algorithm to produce the graphs and all the corresponding numbers.
To stamp hundreds of 7" discs with perfectly 'centred' HOLES is a nigh impossibility.
It's almost impossible to do it with a 12" disc!!!
This means that ALL the figures produced in their Chart Info are dubious and mostly UNREPEATABLE!!!!
I have Chart Infos for the same turntable/arm combination but with the 7" disc moved slightly producing different figures.
I even have Chart Infos produced with the same turntable but different arms ALL with different figures (the arms are in different positions surrounding my TURNTABLE).
So what is my point......?
The GRAPH produced with the PlatterSpeed App is accurate and USEABLE when looking at the 'Green' Lowpass-Filtered Frequency.
If the hole was PERFECTLY centred.....this 'Green' line would be perfectly STRAIGHT......but only if the turntable was maintaining its speed PERFECTLY.
The wobbles in the 'Green' line are due to the hole's eccentricity as well as any speed aberrations.
So the best performing turntables are those with the most constant and even wobbles approaching as closely as possible a STRAIGHT LINE.
- Frequency Chart AIRFORCE ZERO Note significant aberrations highlighted with red arrows
- Frequency Chart SAT XD-1 Not bad...
- Frequency Chart OMA-K3 Pretty, pretty, pretty good......
It appears that SAT have corrupted what is a very good DD Motor unit....🥴
Mikey says that the OMA-K3 produced the best PlatterApp figures of any turntable he has tested 👏
Does this mean that the OMA-K3 is the most accurate turntable of these three decks.....or maybe of ALL turntables?
Mikey can't (and won't) test and review products from the past which are no longer produced because that's not his job!
But wouldn't it be great if someone WOULD review products from the past against the modern equivalent?
Classic turntables with reputations....gravitas...like the legendary EMT 927 and Micro Seiki SX-5000 and SX-8000.
And what about the NOW lauded Japanese DD Turntables from the '80s...the 'Golden Age' of Analogue?
- Technics SP-10Mk3
- Kenwood L-07D
- Pioneer P3
- Victor TT-101
- Yamaha GT-2000
- Frequency Chart VICTOR TT-101 Hmmmm 🤯
- Frequency Chart TW RAVEN AC-2 Hmmmm....
We can do things today that were only dreamt of even 10 years agoExcept learn from history, harvest experience, expertise and craftsmanship......
Here endeth the Sermon for today 🤗
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- 132 posts total
@richardkrebs That said, within its limitations, the platter speed app does give a reasonable snap shot of what the platter is doing and is thus useful in differentiating between TT’s, as I have been trying to demonstrate.I dont agree - too many variables. My nephew has a double PHD in Maths and Physics, specialises in predictive modelling, and even with the firepower at his disposal ( heads up a team for one the worlds largest banks ) I doubt that any conclusions could be drawn even if you had a database of 1000’s of tests - by conclusions I mean anything statistically and scientifically relevant. We are measuring well in excess of 1 million directly read samples per revolution. GP Monaco made similar claims, and then they came out with a Mark 1.5, then a Mark 2 and so on. Of course there are now electrical components capable of switching at a trillionth of a second, so a million every 1.8 seconds might impress the pundits, but what does it mean really - your TT almost as good as digital ?? |
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Dear @richardkrebs : "" within its limitations, the platter speed app does give a reasonable snap shot of what the platter is doing and is thus useful in differentiating between TT's "" I remember that about 15-20 years ago in this same forum we were in a thread making some comparisons between TTs specs and w&f was one " critical " parameter on that comparisons. Some one there that I can't remember for sure ( I think was T-bone. ) posted that w&f can't tell us the whole true about because we don't know which test record/tonearm/cartridge were used to achieve that w&f figure. Now, TT Japanese manufacturers ( I think ) knew this " trouble " that could impedes that the spec all of us can be take it as a " reference " but that's what we all have from last 50 years. Does not exist other " standard " for that measures spec and we audiophiles needs " something " as reference. All de " bibles " on audio items characteristics/specs came in that way either the japanese bible as the information that came from years in magazynes as Audio and Stereo Review and I think High Fidelity too !!! What BT posted is only useful for each individual system owner with the lab to do it and this just can't happen. So it's not that reviewers are wrong because that's what they have on hand. Your wide explanation of the yellow raw frequency is really an eye open and truly welcomed. It's really easy: we can't do what BT did it to prove that his LT is " superior " and why is that way and his explanation is welcomed too but impractical for us mere mortals. Try to be scientific in extreme as dover likes is interesting but in this specific regards useless. Yes I learned today from all of you and thank's for that. R. @dover "" It is not possible to measure wow & flutter using a test record. "" It's what we have, so no real alternative but to read the raw frequency in the app like it or not. |
- 132 posts total