Distortion looks to be excellent/low. I've heard good things about this driver and I'm interested in a build with it. The on-axis frequency response can be a bit scary at first but I think it will even out really well with the proper crossover and understanding of how a coax behaves. Plus, the benefits of a coax are going to outweigh the cons here. Satori is doing some good work.
@planet10 Looking for a coax? It is the coax to go ... Not a toy
Also test in these place :
https://www.justdiyit.com/sb-acoustics-satori-mt19cp-8-r1-coax/
https://hificompass.com/en/reviews/satori-mt19cp-8-75-coaxial-speaker-review
Also test in these place :
https://www.justdiyit.com/sb-acoustics-satori-mt19cp-8-r1-coax/
https://hificompass.com/en/reviews/satori-mt19cp-8-75-coaxial-speaker-review
From Dickason: on-axis trough 7-12khz bottom -8dB at 9.5khz; trough gone 30° off-axis. How would you use this driver's VHF response properly? (Not asking about XO.)
I did the KEF LS50 meta 1793 3rd-order/2nd-order and the VHF region was a challenge to get ruler flat (too).
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Here is a starting point, https://sbacoustics.com/wp-content/uploads/2025/01/Satori-Coax-Crossover.pdf
Here is the on-axis response (at about 2 V/1.25 m). The crossover point is at 2.4 kHz (slightly high, maybe, but this is where it all added up).
I'm not exactly sure what I would do because I would have to have one and measure it myself in a cabinet. But I am not worried about the 9.5Khz dip because it evens out off-axis. So, I would just ignore that dip on axis and get everything else to be as flat as possible then use off-axis measurements to see what my in-room response would be. The in-room response is going to be the most important for me.