Uni-Protractor Set tonearm alignment

Dear Nandric, any tonearms performance is always in the ear of the subjective beholder. Furthermore it is dependent on a lot of periphery components which do have effects and (hopefully) synergies. An objective judgement in audio is impossible.
What is possible however is a geometrical alignment which strives for perfection. It is a matter of technical gear and precision.
As not all tonearms feature the very same design, nor do all 12" records feature the same grooved area, we have some tonearms which do gain in their performance (here: level of distortion and locations of peaks) from certain alignments which do take into account their individual parameters.
Furthermore - and often missed - when Löfgren and Baerwald made their calculations and did "choose" the arcs they did, it was many years before Robert Fine packed tremendous dynamics into the last 1/2" before the paper label of a Mercury SR-90313 or DECCA decided that the entire Daphnis & Chloe can be cut on 1 single 12" record.
Track a SR-90313 with a FR-64s aligned to Löfgren B and it will match the worst experiences you ever had at the dentist.

Precise alignment is the one - single - topic in analog audio, which is objective. It is simple geometry.
Apply it with a minimum of care and precision and it will give any cartridge and any tonearm the basic chance to shows it's best.
Honestly - there is no problem at all here.
The only one maybe that I do not like to generalize - and I know why and have found good reason.
If Löfgren (A or B ) or Baerwald suits best on all tonearms and records for some audiophiles - fine with me.
But thanks to secularisation, neither I nor anyone else has to follow Galileo's path of pain and revocation against better knowledge.
Cheers,
D.

Raul, I don't think lofgren is the solution to all tonearm alignment. That's why other geometries exist. Dertonarm is giving us other options. If you are happy with lofgren them fine by me. If you are happy with the $20 protractor and mm cartridges fine but for those who choose to buy this tool, fine with me why argue and step all over something Were all different and we have a choice. Not everyone likes hamburgers and fries. You preach distortion so why not use a Japanese pioneer?

Nothing agianst the Dertonarm protractor it's looks like a wonderful tool but think I would probably wait and spend my money on this or down the road get both and don't look back.

http://www.sound-smith.com/cartright/index.html

Brad

Dertonarm, how did I miss this thread.

I guess I was doing more listening than reading.

It took me a bit to go threw reading all posts but I will say thanks for taking the time and designing such a tool, if it truely works the way you mention well what can anyone say but hats off to you and thanks.

Time will tell for sure.

I sure would like to get one to try and compare.

My current arms;

REED 2A 12 inch
TW 10.5

Dear Genesis168: IMHO maybe you don't understand very well the overall subject and what I posted in this thread about.

The main subject is not " if you don't think lofgren is the solution to all tonearm alignment " or what I think or what any other person/people think the fact is that those two Löfgren ( A/B ) solutions are the ones that exist and all the other " solutions ", including the solution you prefer ( it does not matters which one ), are only a copy/clon of those Löfgren equations.

In my last post before the one I sended to you I explain the Stevenson approach as an example on how we can manipulate/change the input data to achieve a different set up parameters but even in those cases the solution is still Löfgren, A or B but Löfgren.

Why is so complicated for you can understand something so simple?: there are no other solutions than Löfgren, what there are are different input data for the set up calculations.

Genesis168, examples: you go to a movie theatre named " Six Flags " to watch Avatar movie and next week you return to the same movie theatre to watch Black Swan, do you think that the name on that movie theatre ( everything the same ) changed or still named " Six Flags " ?, of course has the same name but different input.
You own a Honda Accord that comes with Bridgestone tires and today you decide to change those tires for Michelin: can this car tires change the model of your Honda from Accord to City/Civic?, no you still own a Honda Accord.

The same happen with Löfgren two solutions and like it or not like it to me or not like it to DT or not today we have to stay inside Löfgren A or Löfgren B solutions, that's all. There are no other solutions that gives you overall lower distortions.

As I posted: DT tryed in the past to prove exist a better solution for FR tonearms and when he posted the " new " set up parameters ( that he gives ) only showed higher distortions. What he is talking about again and again he never proved because he can't, what he made is only change the yesterday Avatar picture for today Black Swan one and that's all.

Any changes from Löfgren IEC/DIN only gives you overall higher distortions: it does not matter what you DT or I have to say about and this is with any pivoted tonearm and any stand alone cartridge. As DT said is simple geometry.

Genesis and DT: I'm not against the DT protractor or other protractors I'm only trying to help for what take me a lot of research and time to understand and learned it ( I'M a little " slow ". ) and that this proccess be more easy to any one of you in favor to improve your knowledge level on the subject.

+++++ " Were all different and we have a choice. Not everyone likes hamburgers and fries. " +++++

agree/yes, Löfgren A or Löfgren B are today our only choices. Easy, if you don't beleive this then ask DT that show you the " new " equations ( not input data. ) different from Löfgren ones that outperform it. If he shows that then we could have a third choice and certainly all of us shall win in favor of music sound reproduction at home!

DT, could you? at the end is you who proclam about. I'm sure that everyone would like to see Avatar in 4-D new pictures technology.

Regards and enjoy the music,
Raul.