Vinyl Asylum: RE: Precision of alignment by p.taylor

Vinyl Asylum: RE: Precision of alignment by p.taylor

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RE: Precision of alignment

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In Reply to: Precision of alignment posted by Paul Tobin on May 1, 2011 at 17:59:25:

I have had very good results with the Conrad Hoffman protractor by printing it onto a self-adhesive (matt) transparency and sticking this to a white vinyl LP. Attaching it to an LP helped to minimise inacuracy at the spindle, while the white background facilitated the job of adjusting the tonearm till it traced the arc.
The Conrad Hoffman protractor can be used in conjunction with a pivot to spindle trammel like the one supplied with the Feickert Protractor. This can be placed over the spindle to pivot lines printed on the protractor, thus killing two birds with one stone: (i) it allows you to set the exact pivot to spindle distance (assuming that you are using an arm - like an SME - that allows adjustment of this), and (ii) it ensures that your protractor is correctly placed for alignment at the null points.
The arm which I use is the SME V and I had the problem of accommodating a cartridge with a non-standard mounting point to stylus tip distance (Benz Ruby). Using Conrad Hoffman's template I was able to generate a protractor for the specfic effective length of the SME + Benz combination as measured.

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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 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 05/2/11 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)