To avoid this argument gaining further momentum, perhaps someone in authority at Mark Levinson or VPI would care to address the Forum and explain what the "offending" frames in the video represent, if only as an exercise in damage limitation? ;^)
VPI 2nd Pivot for 3D
I just installed mine and discovering my old records anew. I thought I knew everything there was to know on the original pressing of Fleetwood Mac's Rumers......but no - there's more. You immediately hear a more solid bass, but then the dynamics hit hard. It sounds like my amp is on steroids. More cleanliness, - everything is better. Very highly recommended.
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Here's the link to the video in situ. http://www.marklevinson.com/productdetail/~/product/no515.html @moonglum may be correct as the video of the needle drop is of an Ortofon 2M Bronze (I think) whereas the 515 ships with (and is seen later in the video) with a Cadenza Bronze which looks quite different all in all this is coming off like amateur hour by Mark Levinson and VPI |
Dear @folkfreak : It's obvious that the tonearm in that you tube video is an unipivot design or a gimball one with a severe extreme bearing damages. The video is a " dramatization " that helps to understand what is happening in continuious way at microscopic stylus tip during play of any cartridge in any unipivot tonearm design and in little lower way in quai-unipivot ones. Forces are so huge that gravity alone can't correct it. Regards and enjoy the MUSIC NOT DISTORTIONS, R. |
My guess is the artistic director decided on substituting with a unipivot because it looked less boring than a gimballed one ;^) Is it possible though, Raul, that even gimballed arms aren’t entirely "torsionally stable"? The movements may be small but real due to a necessary amount of bearing "play". I remember, decades ago, Syrinx used offset bearings to try to improve this and resonance behaviour. In fact I used to own a Syrinx PU2... ;^) Not surprisingly the LF performance really was something to write home about :) |
"It has been experimentally shown that with such high pressures and
forces of friction between stylus and the vinyl, that the outer skin
layer of the record material melts as the tip slides over the plastic
and then refreezes almost as fast as it melted. It has been suggested
that since the melting temperature of vinyl is about 480 °F (248 °C)
that the same temperature exists in the contact area.”
Thank you again very much Raul for supplying the biggest laughs I am getting this week this claim is absolutely astoundingly extraordinary and it is obviously intended NOT to be taken seriously perhaps as a lesson that we should not believe everything we read or perhaps as a lesson that "fake news" is not a new phenomenon! It should be patently obvious to anyone with even a limited understanding of thermodynamics or who even knows how to operate a common household thermostat that a record does not go from room temperature to melting to freezing (!!!!) all in an instant simply because a stylus passes over it. While I suppose a conjecture could be made and it is only a conjecture that a stylus may heat a record due to friction but to suggest that it will melt the vinyl and then FREEZE It is beyond silly it is so funny thank you, Raul! What would be really great is if we could capture those FREEZING temperatures and conduct them in such a way to offset the heat produced by our tube amplifiers! That would be great especially in the summer months Raul will you please use Google to see if that can be done and then cut and paste cut and paste and cut and paste and cut and paste cut and paste and cut and paste and cut and paste and cut and paste some more and share that with us??? Thank you and thanks again for the big laughs you made my day your stuff gets funnier and funnier. |
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