dlaloum wrote:Hmm so presumably non linearities due to eddy current could be reduced by lamination of the MC magnetic circuit components (which effectively form a core!) - same as for MM's
You miss the point, that materials selected for being magnetically 'hard' for strong permanent magnets generally have high hysterisis, and other poor properties to make cores. Notwithstanding whether the permanent magnets are laminated to reduce induced eddy-losses, which is a totally seperate non-ideal effect. I'd guess generally not.
dlaloum wrote:My reading also indicates that there would also be a hysteresis effect generated by the cartridge suspension - and presumably the higher the damping on the cantilever, the higher the hysteresis....
Another reason for high compliance (low damping) cartridges?
No, that's total nonsense. 'Hysteresis' in a totally different (mechanical) context. Off topic, and highly disputable anyway. Suggest start another thread, DL.
dlaloum wrote:I'm still trying to grasp what components of a transformer / cartridge design reduce hysteresis effects.
Mostly, it's a material property. Varies significantly between high permeability materials. But also depends on 'bias', or where one is on the B-H curve.