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Help re: inner groove sibilance on Nott. Spacedeck

Hello!

Recently bought a used Nottingham spacedeck with the older metal spacearm.

I am unable to get rid of inner groove sibilance/distortion. This is occuring on all my records - new ones and old ones. I am using a Denon 103R cartridge that I had mounted on a Rega 25. Phono stage is supratek Syrah. I had no problems with sibilance on the rega table. I have VTF set at 2.5 grams, and I have checked alignment several times with more than one protractor - it is spot on. VTA is roughly parallel, and I have tried antiskate in various increments. Always inner-groove sibilance and distortion on the dynamics.

Anyone have an idea of what the problem could be?

Also - do you think I could be damaging my records while playing them like this?

Thanks!

Todd
goatwuss

Showing 1 response by mar00

mar00
59 posts
 
I can think of two things to check on your spacearm.I have an Innerspace with similar arm and the nature of the Nottingham pivot shaft,bearing and wiring make it imperative that all the elements are working together.The wiring comes down through the armtube and down next to the slender armtube shaft,through a hole in back of the shaft into the base.If the arm hasn't been carefully handled the wiring can easily bind up inside at the pivot bearing causing every adjustment made to be way off as the arm moves accross a record .The arm should move freely.Also there's a set screw on top of the armtube that is used to adjust the clearence and amount of 'play' at the pivot bearing.With the armtube level and at rest ease the screw in untill it just stops,then back it off about an 1/8 turn.This should give the proper clearence.
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