Dertonarm,
As you say DT, thankfully we can stick to Euclid and don't have to concern ourselves with Riemann. Re primacy, I believe it was Percy Wilson who published the first analysis of offset tonearm geometry and Loefgren accounted for the factor of decreasing radius as a contribution to distortion. As you say, "every analog audiophile should be grateful for his attempt."
I agree when you say
My point was simply that the weightings for skewing the tracking error equations
haven't changed. What has happened, as you are well aware, is that we can now easily change the input parameters to the same good old equations and find, as you have done, an alignment that is preferable, and then specify appropriate nulls. But these nulls are not related to the actual inner radius of the records, that is, there is no formula that I have seen published, where I can enter an actual inner and outer radius and come up with say, Uni IEC, or any other null based alignment.
John
.
Löfgren just used euclidean geometry.... He was however unquestioned the first to muse and care about giving phono playback an optimized geometric solid basis.
As you say DT, thankfully we can stick to Euclid and don't have to concern ourselves with Riemann. Re primacy, I believe it was Percy Wilson who published the first analysis of offset tonearm geometry and Loefgren accounted for the factor of decreasing radius as a contribution to distortion. As you say, "every analog audiophile should be grateful for his attempt."
I agree when you say
his preferences and weightings aren't as universal applicable as they were in 1934/38.
My point was simply that the weightings for skewing the tracking error equations
haven't changed. What has happened, as you are well aware, is that we can now easily change the input parameters to the same good old equations and find, as you have done, an alignment that is preferable, and then specify appropriate nulls. But these nulls are not related to the actual inner radius of the records, that is, there is no formula that I have seen published, where I can enter an actual inner and outer radius and come up with say, Uni IEC, or any other null based alignment.
John
.