Fidelity Research cartridges

Yes, it’s unforgivable to divert attention away from the FR-7, isn’t it? 😉

Getting back on the right - uh - track, changing the P2S distance of the FR-64S (or FX for that matter) when using the FR-7 is not a very good idea.

With P2S distance at 230mm you get perfect Stevenson alignment (the stylus ’hits’ all three ’o’ points on the Feickert protractor). This is clearly what Ikeda had intended. Changing to 231.5mm changes the geometry of the tonearm to Baerwald, but it will not be possible to align the FR-7 to this geometry. At least not according to the Feickert protractor. With the fixed headshell arrangement of the FR-7 there’s no way to adjust this.

I did try the Baerwald geometry with other (adjustable) cartridges, but I don’t hear the sonic benefits compared to Stevenson, so I decided to stick with Ikeda’s original specifications in all cases.

Dear chakster, I am not as patient as you are . So I can't wait till I
find whatever about this ''mysterious''  Takeda '' Ivory'' cart. Next
to your impressive cart collection you also have many carts pictures
so I hope  also Ivory? 

edgewear, Being dogmatic is only ''allowed'' if you are strong
believer in whatever religion . There are not many carts with
fast headshells. The most can be adjusted in their headshell  
to whatever geometry ( aka eff. length). Even Dertonarm used
his FR-7fz with Bearwald geometry. But I am not sure about
Syntax about whom I don't dear to guess. 

So I can't wait till I find whatever about this ''mysterious'' Takeda '' Ivory'' cart. Next to your impressive cart collection you also have many carts pictures so I hope also Ivory?

@nandric this is the only Miyabi Ivory picture i can find. Art Dudley has mentioned this model in his review from the late 90’s.

BTW The Miyabi MCA looks completely different.

@edgewear

I did try the Baerwald geometry with other (adjustable) cartridges, but I don’t hear the sonic benefits compared to Stevenson, so I decided to stick with Ikeda’s original specifications in all cases.

right, me too

I don't believe Ikeda himself was as dogmatic as our friends
chakster and edgewear. I am not sure about other FR- 7kinds
but I owned this ''rare''  FR-702. According to Syntax this one
is made for European market. I am also not sure about that but
well that this one has shorter cantilever than the rest.  In one
of my contribution I even guessed that this was his ''evolution''
to cantileverless series 9 C. The number 702 is mysterious but
not its looks. This cart looks exactly the same as other FR-7
kinds.