@lewm - Just happened to catch your post, but for future posts directed to another user you should use @username so they'd be notified. I had to do some searching to find where I sourced that quote from Peter but got it. It's on the following page in the "There's More..." section. https://www.sound-smith.com/faq/how-do-i-adjust-anti-skating-my-cartridge He covers many of the important aspects of AS there.
Feel Silly Asking This Question Alignment Parameters
I feel silly asking this question, but here it goes. Most of the arms I have owned over the years have came with proprietary protractors, and certain ones like the SME are really just overhang gauges. For other ones I have bought custom generated arc protractors for the specific arm. I will probably do so again with this Origin Live arm. However in the mean time i decided to set up using their provided protractor.
When I went to install a cartridge on the table, I found I was not wild about using their protractor, so I decided to generate a Conrad H arc protractor till I made an order for an Accutrak one. What I found odd is that Lofgren A had the longest overhang at 16.8 mm and Lofgren B at 16.3mm. The Origin Live shows 17.5 mm. Is the Rega type alignment that much different than Lofgren or Stevenson? I also noticed with the OL alignment that cartridge offset in the headshell was noticeably greater.
What is also noticeable is the sonics of each alignment is different. To be honest, I like the overall sound of the OL alignment, but I also have this nagging feeling that it does not track as well.
I always felt at this stage of my audio journey I knew how to align a cartridge. I have been doing it since I was in my 20's! Now I have a large degree of uncertainty of which alignment to choose, and what the implications are if i choose wrong. This arm is a long term keeper for me, so its a matter of wanting to get this set up optimized.
Any insights you might pass along is greatly appreciated. Do have a good chuckle at my expense as it seems that I get into these moments of self doubt, and trying to find the way out of the forest of audio can be quite comical.
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FWIW, I wasn’t notified of your response. The gist of my response to PL is that yes, AS devices might increase the AS force as the stylus approaches innermost grooves, but no, in general AS devices don’t follow the skating force in magnitude. Or AS does not successfully cancel the skating force, to put it another way. I don’t think PL would make that claim. |
So I just watched the two videos that bill_k referenced, and I don't perceive any conflict between what Peter says and what I wrote, except for the fact I was technically incorrect to have written that the AS force is constant. Upon further thought, I see now that, at least for the conventional string and weight type of AS devices, the force pulling the tonearm would increase as the tonearm approaches the label, because the angle between the string and the arm wand is approaching 90 degrees, at which point all of the mass of the weight (force, F) would be pulling on the arm wand in the desired direction. |
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@lewm - Notifications when you're mentioned in the forums is I believe controlled by a setting in your AG profile. For the record (no pun intended) the only issue I raised from your earlier post was the claim that "AS is constant in magnitude". I'm also in agreement that the use of AS is an approximation and not an exact science. |
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