Try Vinylengine.com They have a plethoria of info. Here is one page that is really cool for different cartridges. http://www.vinylengine.com/cartridge_database.php -John
Dear Hiendmuse: The first hand information to load a cartridge is the cartridge manufacturer specs.
Load impedance in a LOMC cartridge depends on the cartridge design and on the phono stage design. Changing load impedance values affect the frequency response and resonance frequency on the cartridge ( high frequencies. ) but affect to the output level(volume we will hear: lower load impedance values means lower SPL ( tiny differences but affect what we perceive it as cartridge sounds. ) especialy at low impedance values.
Things goes a little more " complicated " with MM cartridges because we have to " match " it not only with the load impedance but with the load capacitance too.
How to know everything is fine with that load impedance ?, well you will know when hear different values. Of course you need to have some " reference " to compare against it.
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