Why not UNI-DIN alignment?

[aussievintage]

Because I have been stuffing around with protractors, new styluses, etc, I was reading some stuff, and playing around with optimising (for my priorities and pivot to spindle distance) the null points.  I was using this tool https://alignmentprotractor.com/alignment-error-calculator    and read somewhere about UNI-DIN.

 

I wonder why it doesn't get mentioned when people discuss alignment geometries?

 

As you'll see below, it changes things quite a bit.  UNI-DIN suits me, because I want the error on inner grooves, and mid-record grooves to be smaller, as error on outer grooves is much less audible, provided it isn't ridiculous.  So, I get 0.93 instead of 1.3 at the and of the record where the tight grooves and orchestral climax are stressing things out.  The middle grooves are slightly better, and the outer grooves are worse, but still way less than the inner groove error of Baerwald (1.134 on the outer under UNI-DIN, and 1.3 on the inner under Baerwald.

 

These are graphs of  "Maximum distortion when misaligned within specified error range"

 

Baerwald

 

 

UNI-DIN

 

 

 

 

An article where UNI-DIN is compared

 

 

https://www.analogplanet.com/content/uni-din-versus-löfgren-b-just-clarify

 

 

[marcusD]

You need to buy a Smartractor if you want uni- din

i think they invented it 

[aussievintage]

2 minutes ago, marcusD said:

You need to buy a Smartractor if you want uni- din

i think they invented it 

 

Nah, just generate your own at the specified null points

 

e.g.