Correct alignment for Fidelity Research 64fx/SPU?


Hello,

I've recently paired SPU Spirit with FR64fx (& additional counterweight).

FR64fx is mounted at 230mm pivot to spindle distance on my Garrard 301.

I currently experience a light distortion and mistracking. As I tried the SPU before on almost ad hoc mounted 3012 and that sounded technically correct (though not as convincing as with FR64fx in terms of emotional performance), I'm pretty convinced I will need to realign the tonearm.

I would appreciate any info related to an experience of 64/SPU users here, which would differ from a usual 230m PTS alignment. Also, I keep on reading that Stevenson alignment would be preferred, is there any explanation why so?

Basically I need to make a good decision as I have no armboard - whatever decision I make I will need to get a new top board with a new hole for a new alignment.

Many thanks!
anubisgrau

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The SME 3012 is inferior to any FR Arm. This has nothing to do with "personal taste", it is technical fact. The SME was made for the ultra soft Shure System and is not able to handle the energy from cartridges which guide their energy into the Arm (that is the reason why you can sometimes the comment "dancing bearing"). The fx can't be compared to a regular FR with the steel tube, maybe it is a mismatch with the SPU, maybe it is wrong alignment, maybe it is stiff grease inside...but anyway, a Garrard has so many internal vibrations that is very hard to rate something correctly.