Hello Troels,
I dreamed about this speaker and this loudspeaker  ja8008 for many years and finally took the plunge and made it, after the Audiophonics website was restocked. I use it in my studio every day to work on my mixes and my modular synthesizer, and it never lets me down.
I used red ZCAPs for the tweeter, but standard blue ones for the JA8008 circuit. I think I'll upgrade to better ones in the near future.
The JA8008 lives up to my expectations; for me, it's the speaker of all speakers.
Thanks for this great design.best regards
Jérôme from France
NB : i used deepl to traduce my words.