I wouldn't necessarily buy it either, but it's certainly interesting. And this ugliness at around 15 kHz can comparatively good be equalised with very few consequences, that's how it seems when you look at the other measurements. 😎yup, terrible measurement.
I had Cabasse Iroise some 25 years ago . Imported them from Paris to USA. They were great at imaging and sound stage but I couldn't stand their voicing at that time. I think I would appreciate them more now.
Rehdeko is around 96 dB . Driver' s FS is around 100Hz . In enclosure is pretty flat to 60 Hz m.
Those later white drivers sounded very clear, my brother had a Cabasse 3 ways with them but basic model without the sphere. I prefered much more the Cabasse sound before with the normal paper drivers. I liked a lot their 10", a friend asked me then purchased a Clipper II back then ! He always had it with a little NAD3020E, the Kenwood 1100 cd player collapsed though...
https://www.forumcabasse.org/wiki/Catalogue_1988 that year if my memory serves me well.
Notice how high the crossover cut off were for the mid....