[Synchrodyne]

What often gets missed in all of this is that whilst you can make a ceramic or crystal cartridge essentially velocity responsive by feeding its output into a suitably low impedance, such as a typical magnetic cartridge input, it still does not simulate a magnetic cartridge because the inbuilt step equalizing gets in the way. That is why the makers of ceramic cartridges usually offered matching pad circuits that “undid” the inbuilt equalizing when they were so used, thus avoiding double equalization. It’s non-trivial, in that the step was of 12.5 dB. It’s hard to see that doing it this way – de-equalizing then equalizing – might be better than high impedance loading. But there was another approach – as advocated by Burrows – that used low impedance loading followed by simple integration (rather than RIAA equalization) matched to the combination of cartridge self-capacitance and amplifier input resistance.

Cheers,