A point source speaker implies a perfectly uniform spherical dispersion. No instruments have such output. No microphones can record it, either.
Stan, above, started with the idea of the size of a radiator being related to its directivity but didn't finish the thought. I wonder if a radiator beams more as the wavelength approaches the size of the driver.....
I also wonder how various linear designs work into this. A ribbon tweeter is a point, but stretched up/down for a distance.
I like the way Mapman was headed with this.....as a practical solution for speakers....a point source, which may never exist as a practical driver.
Maybe someone will come up with a solution using that new carbon material....Graphene?
Stan, above, started with the idea of the size of a radiator being related to its directivity but didn't finish the thought. I wonder if a radiator beams more as the wavelength approaches the size of the driver.....
I also wonder how various linear designs work into this. A ribbon tweeter is a point, but stretched up/down for a distance.
I like the way Mapman was headed with this.....as a practical solution for speakers....a point source, which may never exist as a practical driver.
Maybe someone will come up with a solution using that new carbon material....Graphene?