If one would use low carbon steel as poles and for return path.. it would require some work to get them into shape, which means they will be work hardened.
Does anyone one know if basic annealing is enough to restore the high saturation point?
Or does it need to be done in a hydrogen environment?
Things like mu-metal are done in hydrogen environment to have a high permeability, but in this case I do not care about a very high magnetic permeability.. I just want a high saturation point
The BBC Engineering Monograph was pretty interesting in explaining several items that need to be taken into account..
I'm beginning to think that make something "nice" yourselves might be not so easy. Not sure if if its worth to put some money into something that might not even work..
One could always buy one of those DIY ribbon motors, with a +-14mm path, but then you get up to 12khz flat, and 15.17khz as -DB point, 18.22khz as -6DB.. not really wow.
Some resonator plates could get that response a bit better maybe, but the waffle plates ones on those chinese mics, like RB500/apex 205 don't seem really great, so it seems all about finding good ones..
