Tonearm recommendation

Ain't it, though.  I like to pretend it isn't happening to me.
So, back to tonearms, in deference to Wrm:  I don't think the 7045 competes with an FR64S or 66S, except where the latter two may have too high an effective mass in relation to the (high) compliance of the desired cartridge, and except for those who are in Raul's camp vis a vis the FR tonearms. (I have formed no opinion yet, since my FR64S is to be used with my TT101.  Thus the FR64S is a lady in waiting.) I still plan to take a look at how various tonearms resonate, once I find appropriate software to do this on a Mac.  Apparently there are several good choices for spectrum analysis programs, if one is using a PC.

Dear fleib: Not really. Let that I try to explain all that. As you I 'm talking of standards alignments as both Loefgren A and B solutions ( Baerwald/Loefgren. ):

in the midel of the 20's a gentleman named Wilson was ( I think. ) the one that for the first time " touched " the overall tonearm alignment importance, that's all I know about Mr. Wilson and I don't know if he gaves any mathematic solutions.
In 1938 Loefgren was who goes in deep about and who gaves those both solutions/equations ( Baerwald solution comes latter and " even " the Loefgren A solution. ).
In those Loefgren equations the main target is to find out the precise offset angle and overhang with foundation/knowing the tonearm effective lenght ( L in the equtions. ) and radius of the Lp grooved  surface ( most inner and outer LP groove recorded area. ). For difference between that L and the overhang the Loefgren solutions achieve the distance between tonearm pivot to TT spindle. The L does not change in those Loefgren standard solutions, what changed is the offset angle, pivot to spindle and overhang values.

Now, we can do whatever we want with those equations but this is not the subject. Even we can have " hundred " of additional alignment solutions using Excel and other mahematics tools ( we can change the effective lenght in a tonearm through several kind of solutions and we can have different offset angles, overhang and null points too but is useless to do it. ) but again this is not the subject here.

My point explained through the example I posted with two different alignment solution for the same tonearm where does not change the effective lenght, I don't want that the effective lenght changed.
What I said is that if with the same tonearm we use two diferent alignment set up and in both alignments we have a " perfect " accuracy no one can detect the diferences in distortion levels because are so tiny and changing groove after groove that makes even tiny those distortion levels. Imposible to detect it.

So, for me is futile/useless try to make changes where those distortions happen in the recorded LP surface becaus we can't detect it and as I posted maybe we can " imagine " that hear the differences it because we " want " to hear differences when in reality we can't.
Just think how can you detect 0.15% of that kind of distortion and through each single LP groove that 0.15% goes down to 0.04%  and up to 0.21%.  Can you?

IMHO we don't have to worry about with tonearm alignment solution choosed the tonearm manufacturer or any one of us what we must worried is that the manufacturer gaves us his tonearm with a " perfect accurate " JIG to make with extremely precision/cero tolerance the tonearm set up in these 3 parameters:

- accurate set up distance from our each one TT spindle to Tonearm pivot. If this distance has not 100% of accuracy then it does not matters the accuracy level in the other set up parameters.

- accurate cartridge offset angle and

- accurate cartridge set up overhang.


That's all. No one needs or has to invent the " black thread ".


Regards and enjoy the music,
R.

fleib: Don't try to create some kind of confusion in the people for what I posted here ( what I posted in other thread has additional explanation that because you are so dogmatic can't turn your " face " and only stay staright. ).

In reference to what I posted here my advise is that you read again the original Löfgren  works/solutions on tonearm/cartridge alignment. It's useless to follow the analysis with you till you read that original white papers where you could find out that the effective lenght does not change because is one of the fixed numbers/value in the equations solution ( we can change it if we want it but this is not the main subject. )  As I said what Löfgren equations solutions ( and Baerwald/Bauer/Pisha/Stevenson/et. ) gives are: offset angle, overhang, pivot to spindle distance ( by diference. ) and null points not effective lenght.

We can manipulate those equations to achieve a tonearm effective lenght  but that again is not the subject on what I'm refering to. I'm talking of the Löfgren original work.

Enough for now.

Regards and enjoy the music,
R.