How to measure tonearm effective mass


Some of us who use high or low compliance cartridges fret about mating them with tonearms of low or high effective mass, respectively. Most of us rely upon data supplied by some manufacturers to specify the effective mass of their tonearms, but many manufacturers do not even supply such data. Does anyone know a simple and relatively accurate method for determining effective mass? We know what "effective mass" is; we want to know how to measure it.
lewm

Showing 3 responses by hifihvn

Google might make it easier if you find someone that explains it an easy way.[http://www.google.com/search?hl=&q=measure+tonearm+effective+mass&sourceid=navclient-ff&rlz=1B3MOZA_enUS325US326&ie=UTF-8][http://www.theanalogdept.com/cartridge___arm_matching.htm]
Since I put the link to the stylus, I should add that they look more like a rock instead of a nice looking gem(in 1st pic) for those that haven't seen one under a good microscope. This link shows a real one, if you scroll down about halfway. The second shows others, click on pic for close up. Sorry for going off subject.[http://www.bmpt1.com/][http://www.theanalogdept.com/cartridge_gallery.htm]