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In Reply to: RE: Thank you for the history lesson posted by 1973shovel on April 13, 2014 at 14:02:41
> I look forward to cartridge alignment about as much as I do extensive dental work.
I know what you mean. Nobody looks forward to cartridge alignment. The best part about it is getting it right because once set, it lasts until you change the cartridge. I believe the fastest and easiest way to make sure you get it right is with an arc protractor. Although, I prefer a non-mirrored arc protractor.
With regard to Rega tonearms, they can be aligned to Löfgren "A" with any cartridge if you mount the tonearm at a distance of 219.5-mm from the spindle rather than 221.7-mm (or 222-mm). Of course, you would need an arc protractor designed for a mounting distance 219.5-mm, too. Wally used to make them.
Best regards,
John Elison
Follow Ups:
But buying a new armboard blank from Roksan is a rather expensive proposition. It's machined Delrin, the inverted top-hat shown at the bottom of the arm in the picture.
Hardly seems worth it for 0.3 mm. Buying Ken's protractor makes a lot more sense.
I've thought about a better arm a few times, and when the thought hits, I go listen to music until the urge goes away.
Thanks again for the information.
No, it's not worth it for 0.3-mm. What I said is if you move the tonearm mounting base toward the spindle by 2.2-mm, you can align any cartridge to a Löfgren "A" alignment with your Rega tonearm. That will provide enough overhang for all cartridges. If you do that, you need a new arc protractor designed for a mounting distance of 219.5-mm and Ken Willis can make one for you.
Good luck,
John Elison
I knew you meant relocating the arm to the 219.5 position, but I didn't make that clear.
There's a plastics place in my area, and one of our maintenance techs at work recommends them highly. I need to get over there at some point to ask them about making an armboard for my Technics SL-110. I'm hoping they will able to recreate the Roksan armboard too, but that's more complex than the Technics.
Finally, thanks for the link to Ken's site.
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