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Compliance is the stiffness of the suspension. The moving system of the tonearm/cartridge can be modeled as a weight on top of a spring. The weight being the effective mass of the moving system and the stiffness of the spring being the compliance of the cartridge suspension. Both the stifness of the suspension and the effective mass yielding the primary resonance of the moving system. A cursory examination will reveal the the stiffness of the spring can be increased, or decreased, independently of the moving mass of the tonearm/cartridge system. The two parameters being uncorrelated and the tracking force being only very broadly correlated with compliance. If you look at the published specs here: https://www.lpgear.com/product/NAGAOKAMP150.html and click on the “specs” tab here: https://www.audio-technica.com/cms/cartridges/e7a3d4bc8b248b64/index.html You will see see the difference. Of equal interest, is that the AT uses a radical stylus profile, while the Nagaoka is a nude mounted elliptical. If all dimensional parameters can be adjusted to correctly align the stylus with the groove, the much larger contact area of the radical stylus will distribute the tracking force over a larger contact area increasing stylus life as well as decreasing groove wear. Of course, none of this will tell you which cartridge you will prefer; only an audition will do that. |
