Magnepan Mods
Often thought to myself, if I ever came across another pair of Maggie Tympanies cheap, I would like to do a mod on them and change the old Ferrite bar magnets for some new Neodymium bar magnets now that they are not too expensive to buy, this should radically lift the low efficiency of the Tympanies to great heights.
https://aussiemagnets.com.au/magnets/Rare-Earth-%28Neodymium%29/Blocks/
Cheers George