Vinyl Asylum: RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms by Mel

Vinyl Asylum: RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms by Mel

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RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms

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In Reply to: REVIEW: UNI-Protractor UNI-Protractor Tone Arms posted by Stitch on April 30, 2011 at 07:20:07:

You have given a fine explanation of the workings of this luxury product. Whether a $799 protractor is worth the cost over far less expensive ones that, with care, can accomplish the same goals is a decision each person can make for themselves.

However I take issue with a few of your propositions where you state:

"But that is not enough, there are also Design differences in tonearm Geometry. Not all are the same. Some Japanese ones are made for tracking the most demanding tracks (closer to spindle), more modern Arms do a good job with reissues and are more or less calculated for that. And can show some problems."

"Not all Arms have the same Geometry and the Owner can choose now to order a Plate with the original specs for his Arm and / or additional ones."

"Some Arms (EMT, some Japanes ones...) don‘t follow modern alignments, they have a own Geometry. For these is also an alignment available (Manufacturer). Or a ,personalized‘ Plate for that Arm with a new, modern calculation to reduce distortion across the whole record."

Rather, the geometry of any standard pivoted arm is uniquely determined by the distance from the record center to the arm's pivot point. It's as simple as that. Any competently designed arm should be capable of supporting a cartridge aligned to any of the reasonable alignment standards about which you have written so clearly. So the ability to be better aligned to play innermost grooves, for example, is an alignment issue; it is not an arm geometry issue.

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Amplified Parts

Topic - REVIEW: UNI-Protractor UNI-Protractor Tone Arms - Stitch 07:20:07 04/30/11 ( 26)

* NEW * UNI-P2S Precise Adjustment Pivot to Spindle - Stitch 10:58:14 08/19/11 ( 0)
RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - Mel 05/1/11 09:37:44 05/1/11 ( 15)
- RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - John Elison 11:54:53 05/1/11 ( 14)
  - RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - Mel 13:28:10 05/1/11 ( 1)
    - RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - John Elison 14:23:28 05/1/11 ( 0)
  - RE: I like the magnifier - user510 12:45:21 05/1/11 ( 11)
    - RE: I like the magnifier - John Elison 14:15:35 05/1/11 ( 10)
      - Precision of alignment - Paul Tobin 17:59:25 05/1/11 ( 2)
        
        RE: Precision of alignment - p.taylor 00:06:14 05/2/11 ( 0)
        
        RE: Precision of alignment - John Elison 23:25:15 05/1/11 ( 0)
      - For you, would there be any reason to prefer lower distortion OUTSIDE the nulls - travisty 17:13:19 05/1/11 ( 4)
        
        RE: For you, would there be any reason to prefer lower distortion OUTSIDE the nulls - John Elison 18:31:15 05/1/11 ( 3)
        
        I agree with Baerwald being mathematically attractive, but... - travisty 03:16:58 05/2/11 ( 2)
        
        RE: I agree with Baerwald being mathematically attractive, but... - John Elison 10:56:44 05/2/11 ( 1)
        
        Thanks for correcting me on Stevenson - travisty 17:35:45 05/2/11 ( 0)
      - RE: one thing about null points.... - user510 15:15:38 05/1/11 ( 1)
        
        You can also move null-points without altering effective length or mounting distance by changing offset angle. /nt\ - John Elison 16:50:53 05/1/11 ( 0)
RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - JCF 06:36:55 05/1/11 ( 0)
RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - Halcroman 22:39:04 04/30/11 ( 0)
RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - FolkFreak 13:50:47 04/30/11 ( 0)
nice post, thanks - beach cruiser 13:48:35 04/30/11 ( 0)
Kudos for your photography! - Muzikmike 10:40:10 04/30/11 ( 0)
RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - bjh 09:48:36 04/30/11 ( 1)
- He produced a limited edition about 20yrs ago called the Apolyt - travisty 10:02:08 04/30/11 ( 0)
Thanks for that informative review! - user510 09:05:37 04/30/11 ( 1)
- The origin is apparently a 1984 article from German magazine 'Das Ohr' - travisty 09:59:32 04/30/11 ( 0)
RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms - mosin 08:41:51 04/30/11 ( 0)