On paper the 9000 and 9601 look similar. Same power, Fs, similar Qt, slightly different Vas but the Voice Coil construction is quite different and I suspect the 9601 will behave better when you drive them hard.
Have you compared them in any detail?
No hands on only theory ~~:smile:
If split winding technology of 18sound does the same as B&Cs SW technology , then yes this driver might be something, dont know if there is a Voice Coil mag test already.
The 9601 also has demodulation ring like both SWs from B&C, but the 9601 is the most expensive driver between the three ( at least for me ).
Another argument for B&C is, that they seem to get it right with the first attempt ~~:smile: .
Overall the better the motor the more useful are standard ( not LEAP 5 ) simulation programs IMO.
Uwe