If im not mistaken,
I believe a plasma tweeter can achieve performance well beyond that of a super tweeter. They can achieve 150kHz range without the downsides.
I’ve been infatuated by plasma since I saw demo but the community will be restricted unfortunately as these speakers typically come with six figure price tags
no inductive voice coil, no inhomogeneous magnetic field, no resonance-bound membrane, no mass-spring system vibrating back and forth, and no non-linear suspension. All there is light and air.
also can be hazardous unless designed brilliantly