2. analog
  3. 133216-2975

Mounting a Jelco Tonearm

This is from a good friend of mine who is having a dilemna mounting a Jelco Tonearm.  I hope someone is able to help:

" I've been trying to determine a foolproof method for accurately locating the hole for a tonearm in a plinth.   I think the pivot to spindle distance or the total effective length provided by Jelco is just wrong.    Everytime I mount this thing it seems like it's not quite in the position it should be so the cartridges sit 1) in the middle of the headshell and 2) line up nicely with the alignment grid.  I think one of the numbers is wrong. But which one, and by how much?


I actually have one of those Dennesen Soundtracktors.   Do you remember those?  They are basically an older, plastic version of the expensive, but very nice aluminum Dr. Feikert one.


There's got to be a simple, logical way to work this out.  


It's amazing I can't seem to find information on the Internet about this.  I wonder what audio shops do?"

Thanks in advance for your comments,

Louis


lou_setriodes

Showing 2 responses by islandmandan

islandmandan
1,260 posts
 
When I mounted my Dynavector 501 as per the specified pivot to spindle distance, the cartridge mounted so close to the back of the head shell, it made it difficult to connect the cartridge leads. I made a new arm board, moving the pivot to spindle distance ( I think it was about 5 mm). This allowed easier connection of the leads, and the cartridge overhang set up just as well on my Mint LP Best Tractor set up tool.

It sounds as good, or better than it ever did, so that leads me to believe pivot to spindle distance isn't as critical you may think, as long as overhang can be dialed in correctly. That's just my experience, someone else may have better information, and will set us both straight.

Regards,
Dan
islandmandan
1,260 posts
 
Schubert, I have a fairly broad range of musical interests, chamber music, symphonic, mostly mainstream jazz (Coltrane, Monk, Miles, Bill Evans, etc; blues and some R'nR.

I love good music, as long as it's what I consider good. Not big on rap or opera (although I do listen to Wagner's Ring Cycle on pristine vinyl on occasion). I'm guessing you have an affinity for Schubert?

Regards,
Dan 
More to discover