The turntables were evaluated in their entirety, which was the point. All were equipped with DL103 as cartridges and played through the same amplifier from Audio Research.
I think the principle problem is that there are many elements that contribute to pitch instability in turntables and these interact. One of the primary elements is the record itself, as the spindle hole is typically off-center, so it will have an unstable pitch no matter what drive mechanism is used. Wow from record centering issues is probably the cause of the large ~0.7Hz peaks shown in the graphs posted by @Balle Clorin. But then you get wow at higher frequencies from the drive and from the tonearm resonance which are shown in this graph from the excellent B&K paper he linked:
??? Performance vibrato generally modulates at 6Hz, which is very close to the common tonearm resonance. There's nothing magical about this frequency, it's a result of deliberate unmasking of the essential tremor that is intrinsic to the human neuromuscular system. It's entirely possible that the 'more musical' effect some people ascribe to turntables may be related to wow occurring at lower or higher frequencies (or indeed to an interaction of different pitch instabilities).
Completely fatuous then just an affectation.The turntables were evaluated in their entirety, which was the point. All were equipped with DL103 as cartridges and played through the same amplifier from Audio Research.
Frank Schröder's turntable, however, had a DL103 that he had modified with a lighter boron needle carrier - perhaps that's why it scored best.
View attachment 290543
You weren't there, and maybe that's just as well.
www.semanticscholar.org
you are mistaken in essence the vibrato of human origin is not regular..View attachment 290547
It's possible to tease out small variations in modulation rate depending on pitch and loudness, but as shown the means are well within 2SD of each other, and vibrato modulation is generally very regular. The only truly significant differences here happen between different performers. These vibrato rates are well within the range of wow exhibited by turntables.[PDF] Measurements of vibrato parameters in long sustained crescendo notes as sung by ten sopranos. | Semantic Scholar
Two high-pitched and long sustained notes, F5 and A5, were selected from an aria found in ten commercial recordings of G Verdi's opera Aida by ten different sopranos and reveal that vibrato rate differed significantly between the tones in most of the singers and confirm Prame's observations that...
Oblivion is probably the best place for that particular TT.
Well, I find off-the-shelf products less interesting. I could just open any seller's catalog.
Well, that is true.
korfaudio.com
@computer-audiophile I did not know Holger Barske had a blog! Thank you for mentioning this.
I can read German -- or, at least, I could.
It will, indeed, be good for my increasingly age-addled brain to do so (or, at least, to give it a go)!
No record is involved in my plots. They are generated by an accelerometer. Record centering wow is not an issue.,
Yeah, yeah -- it's better to read pretty much anything in the original.
Sold my SME 10 last year and could not be happier with a fully streaming based solution. But, each to their own - I fully understand the tactile, emotional connection to vinyl and precision engineered mechanical devices. There is real beauty in such things for sure.
