low QMS dynamic cone transducers?

[thadman]

It would seem to me that a low Qms (<.5) dynamic cone transducer driven by a current source would solve a lot of the associated linearity and compression issues of loudspeakers.

Other than custom ribbons, are there any commercial drivers with such a Qms?

Thanks,
Thadman

 

[el`Ol]

The JA8008 is an excellent driver with Qms < 2, but I don't remember ever having seen something below 1.

 

[Flaesh]

short [with resistor] one coil of 2coils driver..
let google "rdo operation"..
I hope I'm not mistaken 🙂
p.s. see attachment