Some speaker driver measurements...

With this simple circuit...
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...and the latest REW beta, the FSAF measurement method allows for one to run this measurement with real audio, and listen to the residual distortion produced. No microphone required, just a soundcard, a resistor and a patch cord. It's not exactly the same as an acoustic measurement, but still provides a lot of valuable insight into driver performance, and enables comparisons between drivers, and various filters or even cabinet arrangements.

For a simple example, a recording of a Wavecor WF120BD04 is attached, tested at 2.8V free air. You can hear easily the harmonics, intermodulation, and barkhousen snap,crackle, and pop.

If there's interest in further discussion, perhaps a new thread can be created instead of clogging up this one.
 

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The SB29SDNC-C000-4 fabric dome compact neo magnet tweeter measurements:

https://hificompass.com/en/speakers/measurements/sbacoustics/sb29sdnc-c000-4

Uh, looks bad >10 kHz to me; breakup peak, narrow dispersion. Distortion peak around 4 kHz looks also not so well. Only good thing is it can go loud.
In comparison with other neo fabric dome tweeters, Wavecor TW030WA13/14/23/24 or Scan Speak D3004/602200 show much better and nearly flawless behavior.

P.S.: Thanks for the measurements! 🙂
 
But Txtn is maybe also less colorfull than paper, or the strenghened ones like papyrus. Certainly a good trade off over metal ones surely... Some found the Perlisten loudspeakers full txtn to be a little boring ...
Devil advocate here as I didn't listen to a txtn. I am not sure it is more enjoyable than a SS 12MU, NE149W, Satori paper... but certainly more accurate for pro mixing ?
 
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Thank you for the review.

In that frequency range : how compare the sound of Textrene VS PP doped Mica à la Audiotechnology or Hivi, please ?

Also some testimonied textrene tweeter sounds a little similar to true ceramic tweeters, what is your listening experience about that?