Field coil dava cartridge

and I said 0° because near and in between both null points the difference is so negligible that is useless to take it in count.

R.

high tracking error in 12" is 1.4° at 146mm ( outer groove) and from 120mm. to 66mm is 0°and at most inner groove ( 60mm ) is 0.56°

in the 10" is 1.65° at most outer groove and 0° from 119mm to 66mm and at most inner groove is 0.57°

All those with 100% accuracy in the alignment but any tiny inaccuracy in the alignment makes that the 12" error gone way higher than in a short tonearm.

Nothing justify a longer tonearm other that the " no sense ": " I like it " or just ignorance. In the other side a longer tonearm develops higher resonances/vibrations/self distortions ( everything the same. ).

Thats what my chooks use to say when we had the chook house in the back garden. Cluck, cluck, cluck cluck...

They were good layers though. 

@mijostyn  : Maximum distortion difference between null points is only 0.1% if alignment accuracy is 100%: zero tolerance.

R.

Maximum distortion difference between null points is only 0.1% if alignment accuracy is 100%: zero tolerance.

If one only has one eye this can be difficult to achieve

@rauliruegas 

 you are rigth, the 12" against a 10" EL tonearm in reality makes almost insignificant " improve " in tracking error. Using Löfgren A alignment IEC:

for someone who insists on 0.1dB riaa accuracy for hi-fi, you sure seem to have a very loose definition of the word "significant"

All those with 100% accuracy in the alignment but any tiny inaccuracy in the alignment makes that the 12" error gone way higher than in a short tonearm.

I believe you have gotten that backwards.  The shorter the arm, the quicker things get ugly with any misalignment.  This is assuming an advanced profile that has a very small window of "acceptable" angular error to begin with.

I guess this thread is about a cartridge with a conical profile but that doesn't change the general pattern of behavior.

and finally.....

 Maximum distortion difference between null points is only 0.1% if alignment accuracy is 100%: zero tolerance.

I do not believe the "weighted" distortion measurements derived from the formulas is actually representative of the sonic penalty angular mistracking error can cause.  It may serve as a great technical cudjoe to beat people with  but I generally trust arguments formulated from the listening chair rather than from behind a computer screen.

dave