All,
This whole question about why people are tracking this cartridge at 2.5 g. has been puzzling me for quite some time.
I have one possible explanation.
Raul and I have been harping for quite some time about how many phono stages with high aspirations suffer from being too slow - having a slew rate which cannot keep up with fast transients. This is a fascinating phenomenon, as the resulting sound can fool you into thinking that you are mistracking the inner groove. It can have you puzzling over your setup geometry, azimuth, anti-skate ... as well as tracking force.
Think back to Doug's comments on tracking just above the threshold of mistracking for best dynamics (also applies to having a delicate hand with anti-skate setting).
Let's put the two concepts together ...
The XV-1s has extraordinary dynamics. I can see where some (perhaps not all), are loading down their cartridges with some .6 grams extra force in order to constrain dynamics which overchallenge their phono stages. I have not heard every phono stage out there, and certainly can't comment without inspecting the setup of these rigs. I'd certainly love to see one of these systems and plug in a known "fast" phono stage (after optimizing setup) to hear what results.
I'm sure there are other reasons for many of you tracking at such a high force - including your turntable's architecture, stand, and the floor everything is sitting on, but in piecing all of this together in the context of an unrelated discussion with a customer, I felt compelled to relate these thoughts for your consideration.
I don't get to check in here much these days, but will try to follow this thread as best as I can.
Cheers,
Thom @ Galibier