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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: Is the era in which a record is produced a critical factor in cartridge alignment? posted by Plinko on April 20, 2007 at 06:14:26:
Hi,It is correct that determining the null radii depends on the choice of inner and outer groove radii.
In fact, the DIN standard allows modulated grooves to be cut to an inner groove radius of 57.5 mm and I have a handful of DG records with a 57.5 mm inner groove radius. However, as a percentage of my total collection this number is very small.
If you look through your record collection, you'll find that it is rare for the inner groove radius to fall even as low as 60.325 mm. Based on this, I've seem it argued that the inner groove radius should be chosen as some value greater than 60.325 mm in order to produce less 2nd order harmonic distortion on the majority of LPs.
Either argument has some validity, but the debate falls into the category of hair splitting.
Using 60.325 mm as the inner groove radius and 147.05 mm as the outer groove radius has the benefit of giving the well accepted standard null radii of 66.0 mm and 120.9 mm if you opt for an alignment to minimise the peak distortion between the inner and outer groove radii.
Best regards,
BK
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Follow Ups
- Not really - B.K. 06:18:12 04/21/07 (0)
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