To experiment with variations in vertical inertial mass I added dual counterweights to the wand of a Trans-Fi linear tonearm. This is the high-mass version for medium-to-low compliance cartridges:
http://cgim.audiogon.com/cgi-bin/vs.pl?vaslt&1140494870&viewitem&o11
I also made a low-mass version for medium- and high- compliance cartridges. This version uses 7-20 gm counterweights.
The optimal adjustment resolves tracking problems such as edginess and sibilance. Too much inertial mass takes the life out of the music. My experience suggests that the Mapleshade weights would be too heavy-- particularly on a long moment arm.
It's great to be done with the math and to resolve each situation empirically.
http://cgim.audiogon.com/cgi-bin/vs.pl?vaslt&1140494870&viewitem&o11
I also made a low-mass version for medium- and high- compliance cartridges. This version uses 7-20 gm counterweights.
The optimal adjustment resolves tracking problems such as edginess and sibilance. Too much inertial mass takes the life out of the music. My experience suggests that the Mapleshade weights would be too heavy-- particularly on a long moment arm.
It's great to be done with the math and to resolve each situation empirically.