VTF: About 35 years ago I worked a Shure cartridge clinic with a engineer from the Shure factory. Folks could bring in any turntable and cartridge and we would inspect for stylus wear and set up their cartridges using a test record and oscilloscope.The engineer would always ask me for the maximum tracking force for that cartridge (regardless of manufacturer) and set the Tracking force for that. I finally asked him why the max every time - his response " Minimums are set by the marketing dept - max's by the engineering dept - believe whichever one you want". He then waited until the next V-15-II came up ( top of their line at that time) - set the VTF and antiskate for 1 gram -put it on the test record and the waveform distorted on a much lower velocity band of the test record - increased VTF and antiskate to 1.5 grams - it tracked cleanly every band on the record.
I have installed and set up several thousand cartridges since then - always have set to max.This was one of the things ( along with the outrageous performance to price ratio - always a best buy) that I liked about Grado carts - VTF 1.5 grams -period. Most of these were relatively modest tables that in the pre-CD era folks used a LOT.
YMMV - but max VTF works for me.
I have installed and set up several thousand cartridges since then - always have set to max.This was one of the things ( along with the outrageous performance to price ratio - always a best buy) that I liked about Grado carts - VTF 1.5 grams -period. Most of these were relatively modest tables that in the pre-CD era folks used a LOT.
YMMV - but max VTF works for me.