Dumb VTA Question


Sorry ... I have a dumb question about setting VTA. I own a VPI Classic TT which has "VTA on-the-fly" capability. My cartridge is the Lyra Kleos. When I mount the Kleos, the last adjustment is VTA. I start by setting VTA so that the tonearm appears horizontal. Then while I'm playing a record, I raise the tonearm and then lower it until I like what I hear.

Ok ... that's what I do. But here's the dumb question. Some vinyl buffs talk about setting VTA at 91.5 degrees, or 92.5 degrees, and the like. How the heck can someone know the degree of VTA adjustment with such precision?? Is there a tool or special protractor that permits such close adjustments?

Thanks for the education.

BIF
bifwynne

Showing 1 response by anovak

OK, I've read Michael Fremer's comments regarding SRA and VTA and am still confused about the difference. Perhaps someone here can put this in perspective for me (and maybe a bunch of other folks)!

As I understand it, you change the VTA by lowering or raising the pivot point of the tonearm, which also changes the SRA. I had always thought of it that way since making those changes alters the angle at which the stylus contacts the record surface, hence trying to immitate the angle at which the record was cut. So, what's the difference between the two???

VTA/SRA can also be changed by lengthening/shortening the effective tonearm length, also called overhang I believe, but it still affects both of these parameters so, again, what's the difference?

Raising or lowering tracking force also changes the angle in both cases. I'm missing something here and would sure like to know what? Anyone else confused by this?