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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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In Reply to: Gimbal vs unipivot vs air bearing tonearm posted by mondial on June 23, 2015 at 20:10:06:
...but not yet mentioned: a pivoting tonearm utilizing a magnetic bearing.
aka Shroeder tonearm. Its disadvantage is that it is composed of a magnet hanging off a piece of thin cord. The magnet that hangs is held in place by the magnetic attraction of another magnet just a fraction of a millimeter beneath it. Invariably, the cord will wear out and require replacement.
Its advantage is significant, however. No friction. No physical contact between the bearing halves. In the case of the Shroeder tonearm, it is universally agreed between owners of this arm that it does deliver excellent sound quality.
air bearing tonearms, that I'm aware of, tend to be linear tracking arms.
I know of no air bearing in use on a pivoting tonearm.
The unipivot design has an advantage in that it focuses all motion about a single cone/cup interface. Typically this design handles vibrational energies very well because so much mass gets focus at a single point.
gimbal bearing arms can be very good or they can be not so good. It just depends on quality of design and build. Quality of the pivot bearings. (invariably cones/cups or cones/balls in a cup.
I confess to liking gimbal arms that employ a frame work looking rather like a gyroscope. Very space-age appearance in the 1960s and 1970s. Still in use to this day.
-Steve
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Follow Ups
- RE: another bearing type worth consideration... - user510 16:08:48 06/24/15 (2)
- The cord will wear out? - Penguin 06:33:15 06/25/15 (1)
- RE: The cord will wear out? - user510 08:05:23 06/25/15 (0)
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