@rauliruegas 

Sp-10s were designed for broadcasting: they needed fast star up and fast stop too, speed stability, etc. but they did not needs a special plinth to avoid resonances/vibrations as we need in a home system.

I wonder about your own learning curve, Raul
Several years ago you'be been fighting with a'gon members regarding your idea that "naked fashion" (no plinth at all) SP-10mkII is better than any plinth. Do you remember? 

You goal was to add AT-616 pneumatic insulators under the Sp-10mkII, just like i did last month on this photo of SAEC mat (if anyone would like to see what i'm talking about). 

Now you're talking about "a special plinth to avoid resonances/vibrations", could you explain? The AT-616 pneumatic insulators is there to avoid vibrations and to level turntable in its "naked fashion" style. 

In many cases on this forum you're controversial to yourself, your own statements (from 5 year ago for example) regarding cartridges, tonearms, plinth etc is often completely different to your current statements. Which make me think that all your current statements about vintage analog equipmentn will mean nothing in the next 5 years.  
Just to add that SP10s used in broadcasting were usually seated into a very massive counter-top (for want of a better word to describe a broadcast booth).  They weren't just sitting on top.

Raul and I had this argument long ago.  I believe DDs need a massive plinth in order to counter the torque exerted during platter rotation. What the plinth needs to be made of is yet another bone of contention. Raul had one experience with a granite plinth.  I don't care for granite, and apparently neither did he. We agreed to disagree on this subject (or at least I agreed to disagree), and I don't mean to stir the pot again.
@chakster : Even that's useless to " talk " with you I want to comment:

"  My Sony PUA-7 has its own alignment and its own SONY protractor. "

followed by:

"  And yes, i want to learn things and i have time to learn things in this hobby, i am 41. "

that you w"ant to learn " does not imply that you will learn because you showed not one time but several times that you just did not.

First than all we have to have the rigth mind/attitude to learn where common sense on each one of us plays the main critical role. You have not neither the rigth attitude and your common sense is far away to be a true " decent " common sense.

I gave you enough evidencefacts why that Sony protractor is not for the stand alone tonearm and you insist in using it as  the Stevenson A alignment because you need more evidences coming from opinions . Are you waiting for a post by Mr. Stevenson?

You are not ready to learn and because you are not and even that you are 41 old I can tell you that 100 years can't be enough for a gentleman like you.

As I said: you are a losted case. Nothing to do for help you. Remmeber that " stupidity border ", please stop your self and don't cross-over. You still are in time to return.

R.
Dear @lewm : You know that I'm a proponent od DD TTs but this not means that I can't say that BD designs are not really bad because works fine. As a fact I still use my Acoustic Signature BDs.

Now, the SME 30 is a serious BD design and I think way better that what you could think. I had experiences with both the 20 and 30, very good units.

What I totally disagree with invictus is that the SME V is the best tonearm out there because certainly it's not, I owned and compare it against the best of the best. Yes, can beats the SAECs but this does not means is a " formidable " tonearm, is a good one and that's all. Now, this is what he like it more and from this fact he is rigth: is the best for him but not for other audiophiles with different experiences about.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.


Dear rudeliruegas @rauliruegas

Wow, you have apparently no shame when insulting anyone who questions, or has an alternate viewpoint to your own.

It would seem that you are once again regressing to a position of "absolute" knowledge when it comes to all things tone arms. And that, once again, we, who enjoy music, are incapable of listening to a device and make our own assertions as to what we find pleasing. There is an inherent, and immeasurable complexity to the rather magical process of moving music from a vinyl platter to the listeners ears.

Apparently, according to you (aside from your historical contradictions which have been outlined here @chakster - someone you seem to take pleasure in berating) you have an absolute knowledge and understanding of all things vinyl related, including mathematics. These things are the foundation upon which all of your beliefs and thoughts are built. Given the history of your posts, a more than valid case could be made to back this up.

Couple of newsflashes for you.

Thoughts are not facts, and beliefs are not truths.

(Especially when it comes down to your "holier than though" lambasting of anyone who might suggest that something other than the Holy Grails of information translation from a vinyl record have anything to offer or contribute to the conversation at all)

Here is the thing, a VERY primary thing that I fear may have passed you by in all of your dissertations.

Music, live or reproduced, is not about math. It is about ART...

The translation of, in its most basic form, a straight line to a curve is at all levels a mathematical problem. Calculus and Algebra at their finest.

I will say it again, this is not about math, its about ART. This is not about the changing of a straight line to a curve, its about the emotional resonance of a systems ability to convey a response from the listener.

This is where I paraphrase you - taking some creative license here - "I have neither the time nor interest in trying to educate someone who clearly is lacking in some very basic fundamental understanding of a medium..."

I am not writing this to try to educate you, as that is obviously a lost cause. Rather, it is an attempt to cleanse myself of the disgust I feel when reading your vitriol.

But I digress...

As you have outlined to @invictus005 as to the validity of his beliefs surrounding the SME V, you are once again the harbinger of all knowledge - which is in your "mind" math based. You know, what works and what doesn’t. What sounds good and what doesn’t. Math is the solution to this.

Wasn’t there something called... what was it again??? Oh, right, the Inquisition!!! That’s it! Where there was a dogmatic system forced onto a public. I know, based in religion, not "math", but the thing is, dogma is dogma...

You have, in a previous post, made you myopic attitudes quite clear as you have lambasted the SAT tonearm because it doesn’t facilitate your "math". And, you have done so without having ever heard it.

That is, as close to a definition of narrow-mindedness that I think I could ever reference. Commenting as to the function of something without ever having tried it.

"I don’t like eggs"

"Have you ever tried them?"

"No, but I don’t like eggs because they are yucky"

Dumb right?

So, in closing, I shall quote British Prime Minister Benjamin Disreali responding to Sir William Gladstone.

"A sophistical rhetorician, inebriated with the exuberance of his own verbosity, and gifted with an egotistical imagination that who can at all times command an interminable and inconsistent series of arguments to malign an opponent and glorify himself"

You can swap out "verbosity" (as this is something you clearly lack and I wouldn’t want to be chastised for unfairly, or inaccurately criticizing you) with "Mathematical Knowledge"...

P

PS - Did you read your own signature? "Regards and enjoy the MUSIC NOT DISTORTIONS" Do you actually know what that means?