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 slipknot1

Did your Grado come with a metal weight designed to fit between the top of the cart and the headshell? If so, that can add the needed weight to the front end to offset the counterweight.

Another option is to contact VPI and get a smaller counterweight for the arm. The last thing you want with the JMW9 arm is to have the counterweight so far forward that it makes contact with the rear portion of the pivot point.
The Scoutmaster comes with a large(ish) counterweight standard. There IS a smaller one available from VPI. I got one from them myself in order to get a satisfactory VTF with the Dynavector 17D which is lighter than than the Grado in question. Blutak will work as a temporary solution. But, unless you are very accurate with its application, it will effect the azimuth of the arm in a negative manner.