Hi Since it's been so quiet .... It has been mentioned that iron makes a better material for sensor feedback coil transducers than steel. I have two questions which maybe someone can help. Do manufactured speaker coils have a better grade of material for use in feedback coils? I have looked around a little but can't seem to find a source of iron plate or round stock. Any thoughts? Regards Barry __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>