VPI 2nd Pivot for 3D

I apologize for being absent for a few days.  I live is South Florida and Irma has turned our lives upside down here.  Anyway, without power and no air-conditioner it is difficult to get excited about turntables.  I have no idea what you are trying to say in your post above Raul.  Perhaps someone else can interpret for me?  Just in case my last post was not entirely lucid, my point was that no matter how precise we try to be with TT setup, the medium is inherently imprecise and compromise is part of the game.  No matter how careful we try to be, the records we play are themselves not perfect:  not flat, holes not centered, equalization imprecise, etc..  Everything is a compromise.  We do the best we can.  And you know what?  Don't despair, our efforts are not in vain because as most of us know full well, a vinyl record very often sounds better than the digital equivalent for all it's claimed perfection.  And we also know that we can strive for further improvement through refinements in setup, experimentation, ever improving cartridges and pre-preamps etc.  And, in the process we can have a lot of fun.  

There was an article on cartridge/tonearm geometry and its relationship to distortion. As I recall if the geometry was off by as little as 1/10 degree in any direction the distortion would double. That's why the geometry should (ideally) be changed for almost every record. That issue all by itself is reason to go to CDs. Well, almost. 😀

Dear @billstevenson :  """  We do the best we can. And you know what? Don't despair, our efforts are not in vain.... """"

in those words you resume what I try to explain through my last post to you.

Now, the cartridge/tonearm geometry alignment it does not cares on all or any of the imperfect characteristics analog/LP has. Always we have to try that that set up been do it with high accuracy.


"""  a vinyl record very often sounds better than the digital equivalent for all it's claimed perfection.   ... """

Today that statement is so controversial for say the least. Today digital technology advanced " ligth years "  in the last 10 years and I think that today is way superior ( everything the same ) to analog/LP experience.
Digital is still growing up almost single day. I enjoy both formats but I know that digital outperforms analog. We can " close " the sun with one " finger ".
Analog is at's limits when digital still growing up and this characteristic is a welcomed for any music lover and audiophile.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

Dear @geoffkait  : """  That's why the geometry should (ideally) be changed for almost every record. """

Can you share with us a wider explanation about?, is interesting to know why we need to change the geometry at each record.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

Due to the variation in thickness of the LP the geometry of the cartridge/tonearm changes significantly, enough to produce 1/10 degree change in geometry in some cases. Don’t they have on-the-fly geometry adjustment gizmos?