Using a protractor like the Wally unit or the SmarTractor you can adjust almost any set up to a number of alignments by playing with overhang and offset so that the cantilever is tangent at the two null points.
What is you tonearm’s Maximum Distortion?
I’ve been playing around with different cartridge mounting, as a Grace arm the plinth of my Lenco cannot be mounted at the recommended pivot-to-spindle distance of 222mm (closest it can get is 225mm).
My best figures in theory seem to be:
Max. Tracking Error: 3.51 degrees
Max. Distortion: 1.21 %
Average RMS Distortion: 0.73 %
This is with: P-t-s 225mm; overhang 11mm; offset angle 19 degrees.
What are your figures for your setup?
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Dear @fusian : You need two additional parameters to make the tonearm/cartridge set up and achieve those figures of lower distortion levels and that I don't gave you and are the null points that are: 80mm. and 126mm. not the one you are using today. R. |
are the three quoted sets of numbers referring to the same setup? Like Lew, I am skeptical of the accuracy of the 'calculated' distortion numbers since the whole description is to vague. @nrenter posted a screen grab to John Ellison's Excel spreadsheet. which can be found on the Enjoy the Music site. This file has the description below of what the calculated percentage distortion refers to.
dave |
- 42 posts total