Dear Raul,
Löfgren has not "detected" anything. Neither did Baerwald nor Stevenson nor any of the other persons which did calculations regarding the tracking arc and where to set the 2 tangential zero error points. You are missing one of a few vital pints here.
This is simply applied mathematic - geometry to be precise.
The last facts in known geometry of relevance to our small world which were "detected", were so many many centuries ago.
It is not just about average, peak weighted and/or maximum distortion and comparing those figures.
We have that way to evaluate things in all kinds of statistic everyday life and they are widely used to generalize issues by politicians worldwide with known intent and effect.
Is there a better tangential calculation with better distortion figures for a FR-64s possible - better than Baerwald ( Löfgren A), Löfgren (B) or Stevenson ?
Yes - of course.
Same for a good dozen great tonearms out there.
Why so ?
This is kind of generalizing arithmetical average vs detailed INDIVIDUAL calculation focused on an individual topic.
And maybe taking a few tiny issues into account which shouldn't be neglected.
Funny thing here is, that for the last month it seemed not to trouble you too much that I have designed the UNI-Protractor.
But now you seemed to change your mind and fall back to - very .. - old positions and habits of yours.
"False Prophets" who supported that LOMC-subject and forced a poor man to spent thousands of big dollars for those cartridges.
O.k. - message received.....
I believe that we all soon will see the decline of LOMCs into the mist of history - at least that's the prophecy.
Cheers,
D.