What defines a good tonearm


I'm in the market for a very good tonearm as an upgrade from an SME 345 (309). Most of the tonearms I have used in the past are fixed bearing except for my Grace 704 unipivot. I dont have a problem with the "wobble" of a unipivot, and they seem the simplest to build, so if they are generally at least as good as a fixed pivot, why wouldnt everyone use a unipivot and put their efforts into developing easier vta, azimuth and vtf adjustments, and better arm materials. Or is there some inherent benefit to fixed pivot that makes them worth the extra effort to design and manufacture
manitunc
Dear Mike: The subject with Dan is not if he is correct or not the point is that that is not what we are under discussion.

Anyway, every one can post whatever he want.

regards and enjoy the music,
Raul.
Dear friends: Well seems that there are not precise measures on an unipivot bearing friction level. I wonder from where came that " very low bearing friction ", I think we need this date.

In the mid-time could be interesting that we can think in a unipivot bearing characteristic as " similar " to a tip-toe/cone feet and what it happen around, here we can read about:

http://www.soundstage.com/maxdb/maxdb200207.htm

so seems that this kind of unipivot bearing is a distortion focus in many ways. I know that some of us like some kind of distortions but IMHO I think that lowering distortions or at least not adding more helps to be truer to the recording.

Of course that Lewm is not " buying " nothing but through his experiences he noted a " signature " that I call: distortions.

Yes, it is true that there is no perfect tonearm yet but if we follow analyzing unipivots IMHO this type of bearing design is " surrounded " by higher and more ( different ) distortions that a fix bearing design.

That some of us likes to live with those higher distortions means only that : that likes higher distortions but not that is a better bearing type design and some of us here are talking not on what we like ( as Mike. ) but what is wrong/worst or not through a bearing tonearm type design.

I wonder why some of you can't for a " second " try to be objective or think on objective terms? why can't take-off the subjective " cap " ?.

Regards and enjoy the music,
Raul.
i liked the Triplaner better overall than the Schroeder Ref SQ. simply more energetic and once optimized, more detailed...the Reed 2A came along and bettered the Triplaner head to head on a couple of different cartridges. more detail, more space, more solid images, more precision.... Dan_ed is right, whether he is a dealer or not.

Yeah, problem today in Audiophile life is, whatever someones likes, is good. Personally I have no problem with that, because I know, most Systems can't show any difference at all, lots of users have no idea from what a top analog System can really do and a lot save some lines from a "review" in the personal memory and repeat that as "knowledge" later. Tonearm Design is pure knowledge (Geometry, Material mix, what is responsible for what and so on). The Triplanar for example is a nice Arm, but not more. It can't work with vibrations coming from the cartridge properly, it has no holographic pressure like other Arms with dynamic classical music. I sold it too after I made my comparisons with other Arms I had. The Schroeder Arm...well, let's say, some believe, that wood on a string is the top of the Audiophile Reproduction, some prefer the MP3 Player instead or a cheap Well Tempered/Hadcock...
Every new Arm gets the attention, that is ok, but the real breakthrough is the time frame, what kind of user tries it with his System and with what kind of records (with Diana Krall for example it is not really easy to rate something). Same with Digital analog masterings (with some very, very few exceptions).
There are endless records out there which can show the differences, but this is depending on the quality of the System of course. Listeners like Mike who put the record onto the table and are curious what that one will tell him, are rare. Most want an Altar and aren't interested in the Time Trip at all. For those there are the "Best Lists".
Unfortunately they aren't the Best. Maybe best for Manufacturer, maybe Best for Dealer, maybe best for ads, maybe best for Profit, but best for Sound????
Let's go the other way, we could buy the really best Arm out there, no doubt about it, but it would cost only 1500$, what do you think, would happen?

the wrong decision...???
Mike and Dan, I assume that both of you have LPs that you recorded yourself and released commercially. What is the title of the LP? I'd like to get a copy.
Dear Hiho: Due that you stated: +++++ " A unipivot can do that easily with very little friction..... " ++++++

even that no one posted a number/figure/spec on that unipivot bearing friction I would like that you think if that's possible: when all the tonearm weight is concentrate at one point.

Regards and enjoy the music,
Raul.