After reading this in on the TNT website quite a while ago, I thought it made quite a compelling argument as to why VTA simply cannot change the character of sound to any great extent. The article is an old one, but as it’s really just about angles it shouldn’t really date.
And yet I find that after making tiny changes, really quite profound differences can be heard. Putting aside, but not discounting the usual reasons (1, you’re pissed up; 2, expectation bias), is there more to this than meets the angle?
The arm is well up at the back and this does indeed seem to be it’s recommended position. I have a Shindo cart and it does sound better with the arse up on the arm. I’ve never quite got my head around why? The styli is elliptical so this may have a bearing or is it due to cart damping or cantilever / pole piece angle? With the arse up the styli in the groove does appear to be OTT
Whenever I try to think about the why, my brain starts to hurt. Sure, if VTA is spot on then you’re playing the right bit of sound at the right time, and if it’s not then you have some influence of other sounds. But what effect would that actually have? And surely the profile of the diamond has more of an effect?
I would be interested in seeing the results of a number of test tones and music extracts played with different VTA, both measured and subjective. But not so interested that I’d partake in such an experiment.
I’d always thought of it as changing the angle of the cantilever itself, thus affecting the vertical vectors of the spring rate and damping force applied by the cantilever’s compliance as well as the vertical movement of the cantilever given the input from the cut groove… I always thought this would have a greater effect on the sound compared to the changing angle on the stylus itself. Only a theory mind and the calcs/experimentation required to see which has the greater effect would boarder on tedious.
I had a Micro Seki that could alter the rear height by 10mm (ish) on the fly and the differences in sound were easy to hear.