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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

Showing 2 responses by lharasim

lharasim
130 posts
 
You Guys kill me..Fighting over flawed(pivoted) tonearms is beyond me...

Where is all the NEW Thinking?! lets see some real R&D and invest some money in some real tonearm engineering...I have seen enough of the pretty wood arms...

Any pivoted arm new or old is flawed from the get go besides being only tangent on 2 points of a record other parts = (distortions)......the mechanical bias on any of these arms are not totally linear/calibrated across the entire record so you have torsions/distortions etc... if that is what you like so be it..

I guess I will just stick with my graphite composite Linear motor...tangent arm.....
lharasim
130 posts
 
Hello Lewm....I must agree on the air bearing linear arms...they sound funny to me never liked them much...Now the old rabco (when working correctly) and the much newer pioneer's pl l1000a's arm is fabulous...uses a linear motor for arm movement the arm also uses a graphite composite arm tube and dissipates cartridge energy via high mass structure now that was engineering IMMHO
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