Spherical tweeter/mid diaphragm

There are many attempts to make a spherical radiator. It is not an easy physics problem. How do you make a spherical object inflate & deflate…

MBL likely the most prominant brand trying.

I always imagined a spherical source as a 4D sphere moving in and out of 3-space, somethign we have yet to get a handle on.

dave
 
You mean like the Magnat Magnasphere Delta?

3EA6B84F-18B4-4790-85D1-3194E4DD4EE6.jpeg
 
There are many attempts to make a spherical radiator. It is not an easy physics problem. How do you make a spherical object inflate & deflate…

MBL likely the most prominant brand trying.

I always imagined a spherical source as a 4D sphere moving in and out of 3-space, somethign we have yet to get a handle on.

dave
It only has to stretch enough to vibrate like a diaphragm. Some kind of soft closed cell foam molded into a sphere perhaps?