I have a Graham Phantom arm, which comes with the cartridge set-up jig. While I dont have the jig in front of me, IIRC, there are 2 markings (for 2 different alignment curves) roughly around 1mm apart, which is a big difference considering the precision level members are talking about here.
Now, as John Gordon and Dertonarm pointed out in another thread (if I understand correctly), which alignment curve to choose really depends on the inner and outer radii of the groove area, as well as the music piece and, of course, the users preference.
So, I really fail to see the need for an ultra precision alignment protractor, as the best alignment is probably different for different LPs and individual users. Taking the Phantom arm, I suppose even if I misaligned the cartridge and placed it somewhere in between the 2 markings, I would just get slightly different null points than the 2 standard alignment curves. This might, or might not, be a good thing depends on the LP played.
Am I missing anything?
Now, as John Gordon and Dertonarm pointed out in another thread (if I understand correctly), which alignment curve to choose really depends on the inner and outer radii of the groove area, as well as the music piece and, of course, the users preference.
So, I really fail to see the need for an ultra precision alignment protractor, as the best alignment is probably different for different LPs and individual users. Taking the Phantom arm, I suppose even if I misaligned the cartridge and placed it somewhere in between the 2 markings, I would just get slightly different null points than the 2 standard alignment curves. This might, or might not, be a good thing depends on the LP played.
Am I missing anything?