Uni-Protractor Set tonearm alignment

Dear Raul, I assume that I quoted from 'Das Ohr' in the thread about the FR-64 S. According to the reviewers the
geometry in the user manual was not optimal and they proposed 231.5 mm spindle-pivot distance and 146mm eff. lenght. Those are the 'FR numbers' you are refering to.BTW
Dertonarm was also reviewer by 'Das Ohr' in those time so
I thought wrongly that he must be of my age. No idea if those numbers are of any help but I used them for my FR-64
already in 1984.

Regards,

Dear Nandric: Thank you, yes are the same numbers we are talking about.

Regards and enjoy the music,
Raul.

Der T_bone: The same happen ( original with higher distortions. ) if the common data is EL ( 246mm ) instead PTS one in either IEC or DIN standards.

regards and enjoy the music,
Raul.

Dear Pryso: +++++ " I do continue now to wonder if Dennesen considered other alignment calculations and rejected them, or if he simple accepted Baerwald because it was the most well known? " +++++

IMHO the precise and true answer only Dennesen could have it but I think that this could been take it in count for that Dennesen designer:

Löfgren A/Baerwald is the solution that gives you the lowest possible amount of tracking error at the inner, centre and outer grooves while keeping this error equal at all 3 points. This seems to me a good overall compromise.

Regards and enjoy the music,
Raul.

Dear all, "that Dennesen designer" was Francis G. Dennesen himself, together with Richard Wilson, Roy D. Toulan Jr. and Peter Madnick.
Cheers,
D.