"The pivoted offset arm makes one huge compromise for the sake of simplicity and that is it is not tangential." I would add there is a price to pay for the headshell offset, and that is very high skating force, because of the headshell offset angle. And that has resulted in another compromise: poorly designed and implemented anti-skate devices (in an attempt to correct for the enhanced skating force) that are only partially or momentarily effective.
Mijostyn, You have often written that magnetic AS is superior to the string and weight type of AS device, because of reduced friction, I guess associated with the string passing over a support structure. But this has puzzled me, because if you adjust a string and weight for optimal effect, that process per se accounts for any frictional losses at the fulcum. With the string and weight, I would guess the AS force is fairly constant over the surface of the LP. Whereas, with a magnetic design, though I have never looked inside at how they are built, I would imagine that the AS force varies with the distance between the magnet(s) and the ferrous part that is attracted to the magnet, according to an equation where F is inversely proportional to the square of the distance between the two attractive elements. (It's complicated but the take home message is that the force would increase as the two elements of an AS corrector based on magnets approach each other.) I don't honestly know how magnetic AS is built but I have wondered about that.
