Fidelity Research FR64s Headshell dilemma

''Simplicity and reality'', As Raul Kessler& Pisha start with
assumption of 3 ''simple equations'' needed for optimal
geometry. : 1. the determination of zero points, 2. the optimum
of offset angle and 3, optimum for overhang for a given eff.
length.
The reality, ''in the other side'' , as Raul is used to say,  is that
neither of 22  tonearms inspected has optimal construction.
All have sub-optimal results in the context of mentioned ''simple
equations '' . 

@chakster : " This is how anyone can change alignment from Stevenson to Baerwald without changing PS distance...""

yes, I’m not saying you can’t. The issue is that you are changing the EL with its implications and of course that with TT with integrated tonearm where we can’t move the tonearm position then we have no alternative, it’s clear.

"" At the same time i have tonearms in use aligned and designed with Baerwald method. ""

this is your real problem and total misunderstood because you are not a tonearm designer and you just can’t understand how that works: again the tonearm designer does not design his tonearm around an alignment type, through his design what he determines is the tonearm EL and when the tonearm is finished that tonearm can be used with any alignment geometry. Some designers like Löfgren A/Baerwald but this does not means in anyway that the tonearm was designed for use that geometry alignment, we can use any alignment we want.

VPI designed the tonearm as any designer but they choosed a combination of some alignments ( I think the Cotter one. ), for what lohanimal posteed Clearaudio did the same: a little different alignment, SAT too.

Almost all Japanese designers when they finished the manufacture of their tonearm choosed Stevenson alignment but we can choose a different one with any of their tonearms because Stevenson is an aberration and the worst alignment no matters what..
I think that Japanese tonearm designers never took their time to analize the charts/diagrams we can read/see in the vinylengine calculator were any one can see that Stevenson always has higher distortions(errors that any other alignment type no matters what ! ! but at the last 3mm of the LP recorded surface grooves but the LP’s that normally we own perhaps only the 1% are recorded at those very inner distance. As I said an aberration/worst and absurd along stupid to use Stevenson when we know those facts measured facts.

You can follow using Stevenson, is up to you but even if you can’t detect the higher distortions you are totally wrong and this speaks very clear you extremely low knowledge levels and your imposibility to learn to understand: that’s your brain, good for you.


R.

I do remember as story of SAEC then the first series was so condemned by alignment geometry specialists that they have changed into more normal one after 308 series. It's obvious that next series was more geometrical :)
So Japanese know about geometry for sure. 

The only German joke I  have ever heard and is curiously 
connected with my post about''simplicity'' and ''reality'' is
as follow:: ''If theory and practice coincide than both are
probably false''.
What Kessler and Pisha discovered is that by te most tonearms 
the offset angle and overhang were wrongly chosen . That is
to say not optimal according to the  3 mentioned equations. 

Dear @bukanona : I owned SAEC tonearms and it’s a disaster for say the least. The only model with an orthodox alignment is the WE-8000 that I owned and that uses Löfgren B wiith JIS standard not IEC one. I have to say that the 8000 model was thenlatest SAEC design.

All the  other models only SAEC knows what they did it  and why did it that way( exist a mix-up in the EL data.) . The other model I owned was the 506-30 that I used with Löfgren A ( IEC. ) alignment (with out any cartridges problems. ) because the SAEC specs are not near any normal alignment and cause problems to mount some cartridges on it.

Those both SAEC models I owned are really good looking tonearms with very high quality build skills, unfortunatelly SAEC is more resonant ( not very well damped ) that what I prefer.



R.