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?
Most of us understand that measurement is the only way to actually know what is going on. Which is a theoretical argument in itself, seeing as probably no one who uses this site with any frequency has the equipment to do such measurements. I am just interested in others’ numbers, in the vinylengine calculator. Has no one here used it, or is it rather that no one feels obliged to post their numbers? Just curious. |
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Dear @fusian : Around 90% of tonearm manufacturers used and use one of the 3 best knowed alignments: Löfgren A or B and Stevenson. Those same tonearm manufacturers choose between different but " standard " tonearm efective lengths: 9", 10", 10.5", 11" and 12".
So run 5 times the VE calculator and you will know how measures the 90% of audiophiles tonearms. That's it. R. |
@fusian : Forgot that if you want lower distotion figures then and using Löfgren A alignments its tonearm parameters set up are:overhang 21.58mm and offset angle 24.8°. Where the maximum error 0.94° maximum distortion 0.33% and average distortion 0.22%. All these for your P2S 225mm. Please don't ask how I found out those numbers because I have no time to explain you ( using VE calculator. ) or to any other gentleman, but that's it.
R.
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