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RE: Fidelity Research FR64S

I think it's that your cartridge lines up square in the headshell if you mount the FR64S at 231.5 mm P2S and align for Baerward. Versus having to twist/toe in the cartridge against the headshell if you're at 230 mm and want to hit Baerwald. Yes, my understanding is that it's because the FR64S's headshell offset angle (combined with the published P2S) reflects a different geometry, perhaps Stevenson. None of my other arms are like this (including my FR64fx - and on that arm I've also verified that the SMARTractor's Baerwald matches up to my GeoDisc) - they line up square in the headshell for Baerwald at their recommended P2S distance. I use a SMARTractor for setting P2S (pivotable arm boards on my Clearaudio Innovation) and then align to its Baerwald. The slight toe-in doesn't bother me - I'm aligning to the protractor grid, not the headshell. And it sounds great.

Also as it stands, my Koetsu runs up to near the most forward point on my Ikeda headshell slots. If I further increase P2S I doubt I'd be able to hit Baerwald since I'd run out of room. I think the cool kids running 231.5 mm more often use those fancy Arche headshells - maybe they have more range.

Edits: 06/30/20 06/30/20 06/30/20 06/30/20 06/30/20 06/30/20

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