I am probably restating what the others said above. It comes down to the protractor geometry in question, which as the others said, starts with spindle to pivot distance. It's just that simple.
If your VPI came with a protractor, you will know immediately if you can mount the cartridge so that the stylus touches the precise point on the protractor that is the optimal overhang setting. If you can't dial in the overhang point of contact, tracking distortion will be increased.
If you don't have a VPI protractor, you can buy one from VPI, or buy an adjustable protractor off eBay.
I can't give you precise information on the added distortion effects, but suffice to say, each protractor geometry is set up to "optimize" minimal distortion results based on the approach and theory of the particular geometry in question.
Good luck.
If your VPI came with a protractor, you will know immediately if you can mount the cartridge so that the stylus touches the precise point on the protractor that is the optimal overhang setting. If you can't dial in the overhang point of contact, tracking distortion will be increased.
If you don't have a VPI protractor, you can buy one from VPI, or buy an adjustable protractor off eBay.
I can't give you precise information on the added distortion effects, but suffice to say, each protractor geometry is set up to "optimize" minimal distortion results based on the approach and theory of the particular geometry in question.
Good luck.