Thank you all for the answers, but so far no one have answered directly my question: If I adjusted the VTA by 1 degree, will the SRA change with the same 1 degree?
Thanks
Thanks
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- 38 posts total
dangcaonguyen If I adjusted the VTA by 1 degree, will the SRA change with the same 1 degree?It will be very, very, very close, but it’s not exactly a 1:1 relationship. That’s because VTA is the angle between the surface of the record and that of the stylus tip in the groove and a line drawn through the cantilever to its pivot point. SRA is that the vertical center line of the stylus contact patches make with the groove ridges. The groundbreaking and still-definitive work on this was by Risch & Meier. See the March, ’81 issue of Audio magazine. It is online here. The illustrations will make this more clear. |
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petg60 1mm change in VTA will affect 0,19 degrees of SRA, so no it will be less than 1 degree.VTA is measured in degrees, not millimeters. VTA is an angle, not a distance. But even if you intend to say that a 1mm change in pickup arm height results in a .19 degree change in SRA, you can’t state that as an absolute. The correlation between change in arm height and change in VTA/SRA is contingent on the length of the pickup arm. That’s one of the advantages of a longer pickup arm. In any event, I’d like to see the math that supports your claim. |
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