VPI 2nd Pivot for 3D

Dear @moonglum : If I remember the latest information about was by Dr. A:J Van denHul who measured 160° celcius between the stylus tip and groove.

In the other side the best confirmation  on the critical importance for tonearm true stability bearings to " avoid " all those huge developed forces are the listen experiences by @stringreen and @dodgealum whom owns the true unipivots and compared against the quasi-unipivot ( stringreen. ) and the gimballed one VPI model. Both very precise in the improvement levels.

That's the same experiences audiophiles had when changed from the original Graham tonearm ( similar design to the unipivot AC 3000. ) design to the Phantom ( I think you own this model. ) or from the DP-4 ( similar unipivot design to Highphonic. ) to de DP-6/8 or even the Cobra.

Good that after so long time some tonearm designers took in count the terrible unipivot disadvantage due to that unstability because this is what the cartridge does not needs and is not asking for. We always have to understand the cartridge needs at microscopic levels because almost all comes from there.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

Dear @moonglum : FS. is a great designer and I forgot his tonearm designs.

I experienced the Kuzma 4-point and is very good design and can understand why MF use it. In the other side: can any one justify against quality level performance a 28K on tag for a " simple " tonearm?

Well, maybe I don't know.  Coming from a professional reviewer puts me ore doubts than certainty about.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.

"If I remember the latest information about was by Dr. A:J Van denHul who measured 160° celcius between the stylus tip and groove"

This is another "funny fact" from Raul that is like his claim that VTF is "infinite" because the contact area of a stylus is "infinitely small" it sure must be a funny world Raul lives in with these "theories" that are "fantasies" that he insists are "facts." Such confusion about such basic things really makes me wonder whether Raul is aware of this confusion he loves to share as "facts" or whether Raul's problems are really much deeper than that in which case we should be feeling very sorry for Raul!

Dear Raul,
Perhaps the moderator should step in at this point...  ;)

Yes, I've only heard the SAT tone arm via 320kbps needle drops versus CDs etc but it presents a persuasive argument even if unattainable for the many. If there are hidden distortions in there I like them! ;) :)

BTW before I took early retirement, our thermal engineers constantly used thermal imaging cameras to analyse circuit boards and develop thermal maps. It's probably what VDH used to get an approximation of the stylus interface? They could be quite handy for troubleshooting too.

I recall an EMI chemist commenting on one forum that the melting point of some vinyl formulations was as low as 112C (I know, a bit nerve wracking for the steam cleaning brigade;)
Best regards,
Bill