
Tonearm and Cartridge Matching, Part I

Tonearm and Cartridge Matching, Part II

Tonearm and Cartridge Matching, Part III

Tonearm and Cartridge Matching, Part IV
So much so that I purchased a measurement system (mostly second hand from ebay) that could more or less duplicate their results, and I have tested various cartridge/arm combinations (including the VPI 3d/Madake combo that I use) for the various resonances with the intention of DSP correcting the response.
In particular note the comments on "modern" cartridges etc. and damping and the relationship of the excitation frequency to the "resonance".