What is one to do when the two approaches listed above push you in opposite directions? Menno Van Der Veen acknowledged this and noted that after the proper secondary termination is determined, the load the cartridge sees can be further increased by placing resistance across the primary (ie to the cartridge directly).
@intactaudio I am in disagreement with Mr. Der Veen on this topic. My tests of LOMC cartridges has show that their inductance is so low that they simply do not ring at audio frequencies; they can pass a 10KHz squarewave quite nicely. This suggests that they are not in need of a 'load'. Thus the only load required is really at the output of the transformer, which will (as you point out) will need to be loaded differently depending on the cartridge used.
It is for this reason that Jensen has published a pdf of all the loading networks needed for all the cartridges known on their website. To my knowledge there are no loading values suggested for the primary side of the transformer.
Of course it should be kept in mind that the tonearm interconnect cable and the interconnect on the secondary side be as low capacitance as possible for best results.
