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JMW-9/Cartridge Problem

I'm trying to get 1.5 grams on my grado sonata
cartridge, and can't seem to get more than 1-1.25
grams of weight out of the jmw-9 arm mounted
on a scoutmaster. Is their anything i'm missing or do I need a different counterweight?
russe41

Showing 2 responses by yagbol2

yagbol2
66 posts
 
What is the total weight of the Grado Sonata? If it is below 5 grams you will need a lead speacer to increase tracking force. It's very simple. or fabricate a lead spacer or even put blu-takon the headshell. VPI doesn't make a lighter counterweight than that supplie with the Scout
yagbol2
66 posts
 
I just installed a Clearaudio Sigma (4.5gms) on a JMW9 the other day. Clearaudio supplies a lead shim to add in case the counterweight is not light enough for the cart. I don;t know if VPI makes a counterweight smaller then what is supplied with the JMW9. I know they have heavier but not lighter counterweights
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