flavio81 wrote:alfonso wrote:flavio81 wrote:Werner wrote:FWIW I have repeatedly measured an SL-1200 against a GyroDec.
The Technics has less wow (<4Hz).
Flutter (4..10Hz) is roughly the same on both.
But if you look at higher modulation frequencues, you see
that the Technics has a bulge from 100 to 300Hz or so,
which is totally absent on the Michell.
This is the flutter band that normally doesn't get measured on
TTs (especially not when weighted), but in a tape machine it
would coincide with scrape flutter, which is known to add
aggression to the sound.
Aha! So this is what i heard as a smoothness difference between a Lenco and the typical Technics DD.
Do you have a graph?
OneyedK, i have the same question as you, but i'm guessing that this is a motor/drive circuit issue, not a plinth or bearing-related issue.
So...you stated that under 0,06% wow and flutter are inaudible..and now you're saying that you were able to listen with you OWN EARS some flutters not visible NEITHER by looking at the strobe?! Is that possible?! Also,that a lenco l75 sounds smoother than a sl1200 has yet to be proven for what we know..tough there's no doubt that can be preferred
Alfonso, "0.06% wow and flutter" is shorthand for saying "0.06% wow and flutter considered at only certain frequencies, measured by the manufacturer and weighted using a weighting curve that may not represent the ears' real sensitivity to speed variations".
Werner's post above is clear: You can measure little wow (<4Hz), little flutter (4-10Hz) but some other things can be happening at higher frequencies, where the ear is more sensitive.
Yes,of course but all tt's are weighted at certain frequencies that not represent all the frequencies that our ears can handle! So,probably,all tt's have way more speed instability than those measured by the manufacturer! Even Lencos...and thorens.Of course the michell is in another level cause is way more expensive. Anyway everybody's happy with sl1200 speed stability wich is considered to be outstanding in that price range..even those who can stand how it sounds appreciate its accuracy! So we can't all be deaf! Lenco's l75/78 have never been more accurate in terms of speed stability than a technics sl1200/sp25...that doesn't mean they can't sound as good...and if you think about it,if what you say was true,then means that everybody has believed with their minds and ears something totally wrong in the last 40 years!!! Is that possible?! And i obviously consider lencos l75/78 as great sounding decks