Help me understand cartridge alignment

Have a good " trip ".

R.

"  I was reporting a problem that arose when I used Baerwald with my 505, which requires twisting the cartridge with respect to the headshell.  "

Exactly, my memory is not faulty and here you are discussing about  that offset angle and TD not accuracy.

R.

@lewm  , no I'm not was wrong because that opinion you had it just when you set up your Dyna 505 where I questioned you not to use Stevenson but Löfgren and you said no because all that bla, bla, bla.

I was not wrong, things are that you have short memory and this issue is not the first time coming.

R.

Dear @lewm  : Were measured through the Löfgren A-B equations in reference to cartridge/tonearm alignment and under IEC, DIN or JIS standards.

This is not new and this is not the first time I posted.

" is that stylus overhang and headshell offset angle taken together are examples of the cure (for TAE) being worse than the disease. "  , probably you are rigth but where are those alignment equations that proved it, at least Löfgren did it.

I think in the last 15 years you are sticked to your opinion and nothing wrong with that but I wonder why after 15 years you just has a " wondering " instead to have the maths that proved.

R.

Dear @lewm  : "" except everyone equates tracking angle error (the degrees by which the cantilever is not tangent to the groove) with “distortion”.  ""

Everyone but you? then you are just wrong. Which's your take?

I give you these measured examples in a 250mm EL pivoted tonearm Löfgren A IEC where is clear that as tracking error goes down as traking distortion goes down too as the cartridge is aproaching a null point or goes higher as the cartridge goes away of a null point:

at 66mm groove radius tracking error is zero and tracking distortion is 0.0001%

at 70mm tracking error is -0.359 and tracking distortion is 0.256%

at 90mm tracking error is -1.014 and tracking distortion ism 0.563%

at 115mm tracking error is -0.310 and tracking distortion is 0.135%

The measures was made at each mm and has a linear relationship between both calculated parameters.

R.

Dear @dhcod  : The cartridge/pivotes tonearm alignment must be accurated for the cartridge can shows at its best.

It's not posible to have 100% accuracy but with your protractor you can stay near to that accuracy target. 

All over the LP grooves even if we " have " 100% accuracy we will listening different distortion levels but at the 2 null points, so we all the time are heraing distorted sounds. How much distorted? dpends of the accuracy of our aloignment efforts.

With aremovable headshell tonearm the change in the " color " of the reproduced sounds depends of the material of blend materials of the headshell and its build quality. There are several and different headshells that everything the same gives you different " color " no matters what. I don't like FR but that's  me, you have try and decide bit not only whith the FR but with other headshells out there.

You said that even with those 5mm out of the protractor grid the cartridge sound good and yes is very dificult ( everything the same ) that with a non-accurated alignment the sounds beeeen really bad and for this could happens the misalignment must be really high. So forgeret that you like rigth now what you are listening because you can listen it with higher quality performance when that cartridge/tonearm been " perfcetly aliggned " and remember that each headshell is part of the sounds reproduced " color ".

Regards and enjoy the MUSIC NOT DISTORTIONS,

R.