Elinor, By each cart manufacturer provide specifications among
which recommended VTF and tracking ability expressed in microns.
Say my Benz LP S claims 80 microns by 2g. My Ortofon Windfeld
even 100 microns with 2,6g. On the other side my Ikeda 9 c does
not claim anything but can't track more than 50 microns. As I wrote
in my previous post 50 microns is sufficient for ''normal records''.
But there are records which are more demanding like those
Tchaikovski's cannon shots. Raul use this record to judge carts.
The most cart/tonearms combos will skip the third shot. The same
will happen with cart/tonearm combos by 60 microns if the combo
is not able to track more than 50 microns. I see that nobody care
to test his own combos but trust their hearing or intuition. Well I
check all my (new) carts with my test records first. That is before
listening to them. I was not able to confirm Windfeld but well
LPS . To be more specific I never got 100 microns ''pure'' nor
90 microns but well 80 microns with 2 g by LPS. I do those
tests with my FR-64 because this arm has removable headshell
such that changing carts is much more easy then by Triplanar
and other tonearms with fast headshells. So I was very much
surprised when my Triplanar ''refused'' to track 60 microns and
skipped the groove. This btw does no imply that the arm is defective
because there are many low complience carts wich can't track
more than 50 microns. But if whatever cart can track, say 70
microns , with my FR-64 but the same cart is not able to track
70 microns on my Triplanar I was curious to know why. That is
why I posted my specific question. To my surprise nobody
try the same experiment but invented all kinds of answers which
are irrelevant for my question.