Tonearms longer than 12 inches

Dear noslepums: Audio world is full of many non-sense " things ". Tonearms is no exception.

12"-14"-16" or whatever pivot tonearm is, IMHO, a terrible mistake supported by the tonearm designers/manufacturers and an additional marketing " hype " and nothing more. They take advantage of each one of us ignorance level ( including me ) we music lovers/audiophiles.

Exist many reasons why a pivot tonearm has to be close to 10"-10.5" and no more.
First reason can be the tonearm/cartridge set up it self: different geometry alignments to choose like Baerwald, Löfgren, Stevenson and many more. Almost all audiophiles use Baerwald or Löfgren ( many of us because that was choosed by the tonearm manufacturer. ) because are the ones every one knows about.
These two different kind of alignment set up are very close in between and its real difference is the overhang calculated for each alignment to make the " right " cartridge/tonearm set up. In both cases the cartridge/tonearm offset angle and pivot to center of spindle distance is the same.
That overhang difference that is lower than 0.4 mm makes serious difference on the distortion levels and where/how ( in the LP recorded area/surface. ) those distortions changes its position ( in the LP surface area. ).
Distortions that we can hear it.

What means all that?: think what  that that small distance difference in overhang of 0.4mm does it ( distortion levels. ) and think who of us can mount the tonearm it self and the cartridge with and accuracy no longer than say 0.05mm, this is a hard task for any one of us. Normally we make the overall set up with " error " over 0.1- 0.2 mmm and up. So always the level of distortions are higher that the theretical distortions numbers and that's what at the end we are hearing: higher distortions.

Well, in longer tonearms those small " errors "  during tonearm/cartridge set up the distortions levels goes higher than with shorter arms. In both tonearm cases we have other issue to solve because during set up we changed the effective length and for this set up the offset angle has to be changed and normally no one do that.

In theory with a longer arm the tracking error goes down against a shorter arm and this is the advantage that has the long arms but this advantage is only in static way and things are that the tonearm/cartridge are not static but always in movement during LP play and has to deal with several dynamic critical issues.

The carrtridge needs to ride the LP grooves in " freely " fashion where the tonearm has to respond very fast to the requirements movements for the cartridge stylus/cantilever can follow with accuracy the information recorded on that grooves. A longer arm response to that cartridge stylus needs is way slower that in a shorter arm, this could means different recovery information from those grooves, loosing information becvause the LP does not stop waiting for the tonearm bearing response but goes on and on.

The same happen with the waves in every LP, non LP is absolutely flat but full of micro and macro waves in the surface.
Each time the cartridge stylus is against those waves the cantilever/suspension deflected and VTF/VTA/SRA change ( it does not matters if the arm is static or dynamically balanced. ) changing the quality level of what we are hearing during those waves ( higher distortions. ). In longer arms the problem is accentend because the arm bearing response to come back to orinal VTA is slower than in shorter arms that are faster.

Through the all LP excentricities/off-center the horizontal movements in the longer arms is accented because are longer and all these means additional distortions at micro levels that has influence in what we are listening where in shorter arms thigs are better.

Other issue is that the effective mass of longer arms can makes more dificult to match with some cartridges. Now, we have to remember that this static effective mass during play change to a dynamic mass that impose stress to the cartridge it self during its ridding LP surface, in shorter arms that dynamic mass effect is smaller and with lower influence.

In the other side, a longer tonearms means additional resonances than in a shorter one. In a larger arm those additional resonances/vibrations ( means higher distortions. ) comes through the longer arm wand, arm bearings ( that resist higher arm torsion effects and has to deal with the higher inertia effects too. ) and the longer internal wiring with the very delicated audio signal.

There are other issues against the use of longer arms and in favor of a shorter one.

So, exist no real advantage but ( normally ) higher distortions with longer arms.
Now, that you like it more those higher distortions is not the subject here. Yes, a longer arm sound different but ( everything the same ) not better than the shorter arm that has overall way lower distortions.
Yes, we have to be a TEA to discern exactly what we are listening through both kind of tonearms.

That's my music lover/audiophile opinion but the best judge always be each one of you.

Regards and enjoy the music,
R.


PD. What's incredible is that already exist a 14" unipivot tonearm where unipivots ( IMHO ) is the worst kind of bearing for a tonearm because is totally micro-unstability !

Dear hwsworkshop: Obviously is your privilege to agree or disagree and always is easy to disagree when we don't need to say why. Nothing wrong with that, is each one privilege to do it.

For many years I had the idea that longest tonearms always sounds the better. I learned this mainly from japanese tonearm builders. So I bought some of the best japanese long tonearms and " die for it " against whom tell anything against it.
All that learning process was reinforced by the " nderground " audio magazine reviewers that swered for those long tonearms.

Through my very long learning process " suddenly " I learned that those statements on the long tonearm quality high performance levels ( against the shorter ones. ) was ( IMHO. ) totally wrong ( as many other audio " myths ". ).

How my mind changed about?. First I developed a repetitive and almost bullet proff evaluation/comparison process and through the time I learned what to looking for in that evaluation/comparison process of almost any audio item and of course making time to time check-ups to always have my audio system fine-tunned. I learned to identify real musical information  and the added ( every kind. ) listening distortions.
Second, I was and am having constant training through that evaluation process not only in my system ( " thousands of tests. ) but in other dozens of  different audio systems.

Things are that after I " learned " ( I'm still learning. ) I made several comparisons in my system with the same " everything " ( including cartridge. ) with all my long tonearms against each one shorter brother.
I made the deep and very hard evaluation between my MS MAX 282 and the MAX 237 and I did it too with my Audiocraft tonearm with its long arm wand and its shorter counterpart and too with my SAEC tonearms against SAEC short ones ( btw, i remember why decided to buy the SAEC's over the MS, because I bought first the SAEC's, that's was because a japanese report said theat in Japan people likes SAEC over MS tonearms because the SAEC were more " alive " that the MS " dark " sound. Years later when I learn on the whole subject that " alive " was not better quality performance but just higher SAEC distortions. ) and I did it too with Grace tonearms and other tonearms and in all deep evaluations the short arms gaves ( to my ears knowledge levels. ) me better quality performance with more clear and precise musical information and lower distortions where the longest arms always put tiny veils/bluring ( if you know what to look for. ) on the LP performance.

Of course that all what I learned about can be totally wrong but some of the gentlemans that I know personally in USA where I was listening to his great audio systems can attest what level of that " wrong " I have. Some of them are real TEA and Agoner's too.

All of us are accustomed to different kind of distortions and that's what we like it with out take in count not only the kind of those distortions but its very high levels and the problem is that many of us can't discern about and think that what we are listening is musical information. Far away from that.

Good that for you the alignment issue is no problem because for me and the 99% of the normal people always is a problem. Many of us when make changes on VTA we just do that with out any other change that we have to do it. When the VTA/SRA change we have to re-align to met the effective length on the cartridge/tonearm set up and check that offset angle, same when we make VTF changes: everything change.
Sometimes I think that I can't live any more with my analog be-loved hobby and runnaway to digital but I'm a music lover so I stay here learning everyday to improve my daily music enjoyment.


Regards and enjoy the music,
R.

so....Raul and Harry seem to agree n'es pas?

Geoffrey Owens offers his Helius arms in 9", 10", and 12" versions. He feels 10" is the best compromise, and is the length he recommends.