[tony s]

tony s here. i have several superex pro bv headphones which are decent units from the 70's which i used in my teen years. i currently started using them with a pono player straight in or trough a carver 4000t preamp which works fine for now (i am waiting on one of  the new audeze  press designed by bas com king due out in december)  i also just picked up a superex  bvi on e bay.does any one know the inductance value for the inductor in those units? or can anyone steer me in the right direction towards someone who does. i would like to tinker with the crossover and upgrade the cap/resister/wiring and replace the current iron core inductor  with an air core unit, otherwise i guess i will have to buy and inductance meter and learn from the ground up .any help would be appreciated.ts