The resolution of Lorentz transducer (loudspeaker)

[DSJR]

I realize I came into this from a strange position, but my view was that of an operator of a coil. In other words, how many effective number of bits to I need before it doesn't matter because of errors.

As you said, it is probably not one number for all frequencies or types of drivers. But maybe one could say that the only limit is in the accuracy of the voltage feed to the coil? Or the uniform magnet quality set the terms for the amplitude error.


I am a horrible AI operator.

I'm not technical enough here, but do please realise that (especially) a voice coil that's given an impulse, may well overshoot initially, albeit fractionally, making distinct start stop increments at the resolution magnification discussed here almost impossible to determine. Maybe in a tweeter coil where movements are miniscule, but the same thing may apply there. Maybe this can be measured at microscopic level, but as said above, very few people who could definitively answer that I feel.

 

[livinon2wheels]

this discussion probes a line of thinking I never explored. Thanks for asking the questions and I have enjoyed reading replies. I have a few thoughts on this without doing any research at all just based on my own understanding of how coils and magnets interact and having heard so many different speaker systems in my life. Some great, others not so much. It seems to me that the strength of the magnet and the uniformity of its Gauss weigh heavily on how well a speaker might perform. The magnetic field must be uniform over a given voicecoil travel distance and it must be strong in order to have tight control of the cone and voice coil. non-uniformity leads to non linearity in magetic field voice coil interaction which would measure as distortion at worst and a colorization of the sound at best. A question that comes to mind is would an electromagnet be better at allowing long cone travel while maintaining linearity? This assumes the surround for the cone and the spider assembly has sufficient linearity as well.