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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: Can someone tell me what is wrong with Abe's protractor posted by artemus on October 12, 2009 at 18:16:17:
With that grid, you're counting on this being the case, in order to get your offset angle correct, because you're aligning the cart body with the grid. My recent experience mounting my Ortofon 2M Blue, using the WallyTractor LousyTourist mentions below, was quite an eye opener.
This is because the cantilever was a little bit twisty, and off center, as they so often are, these days. The WallyTractor has you align the CANTILEVER of the cart with three parallel lines he's etched into the two null points, not the cartridge body. You then check it at two other places of maximum error...he wants you to SEE that the cantilever is deviating as it 'should', at these points. So, you have a total of 4 places to check, for offset angle. It is the most exhaustive, rigorous protractor I know for this parameter. When I had aligned the cantilever to be parallel at the the two null points, the cart body was a little 'off' ...noticably so.
I resisted the urge to 'fix' it, and there's no arguing with the results.
It is set correctly. Now I wish I had something like that for azimuth as well, because I set that with a bubble level. But since the cantilever is a bit twisted, that isn't correct, as confirmed by HiFi News Test Record track for azimuth. I'm afraid to dink with it, because I'm afraid I'll make it worse. Wally makes a widget for that too, but I don't have it, and knowing his casualness with orders, not likely I ever will now. And yes, LousyTourist is right. You HAVE to have at least 2 protractors and test records, the better to induce terminal audiophilia nervosa when they don't agree with each other, because they usually won't.
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Follow Ups
- As long as the cantilever is straight, and squarely situated in the cart body, nothing.... - Marc Bratton 19:11:24 10/12/09 (2)
- Why not use the grid to align the cantlever rather than the cart body? - artemus 20:31:18 10/12/09 (1)
- Nice idea....if I ever get a proper magnifying glass, I'll try it..... - Marc Bratton 18:27:05 10/13/09 (0)
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