dover
A 50 percent deviation from ideal VTF would cause serious mistracking with many cartridges.
I do agree that the deviation in VTF with dynamically balanced arms will be less than statically balanced arms on warps, but don't agree that VTF can be precisely maintained over a warp even with dynamic balancing, unless of course you consider +- 50% precise.Don't be silly. The effectiveness of dynamic balancing in achieving relatively constant VTF over warps can easily be observed by watching the deflection of the cartridge cantilever.
A 50 percent deviation from ideal VTF would cause serious mistracking with many cartridges.