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Calculation of effective mass of JMW10 tonearm?

Does anyone know how to calculate the "effective mass" of the JMW10 tonearm? Or better yet, can someone just tell me the number in grams? I am reading "How to Set Up and Tune Your Turntable and Tonearm" by George Merrill. In the booklet he recommends a tonearm resonance frequency between 8 and 16 Hz, 11 being ideal. I have already been told my just purchased ZYX R100FS (Fuji Silver high output) is a good match for the tonearm. But in trying to optimize the sound I need to know the tonearm resonance frequency which requires knowing the effective mass of the tonearm.

Help please. Thanks,
Jon
jonathanochi

Showing 1 response by brrgrr

brrgrr
163 posts
 
Jon, I have a Yatra cartridge, and spoke to mike just a wweek ago about the same situation. He is sending me both the headshell weight and lightweight drop counterweight, for $60, and his recommendation was exactly as Kehut stated.
I'm sure he'll do the same for you, just contact him .Very pleasent guy to deal with.
Carl
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