Old thread that I just came over. Hopefully I can demo the horn speaker system in 2021. At least in Bergen but probably other cities and when the time is ready also bring to an international hifi show. The focus lately has been on finishing amplifiers and a CBT speaker.Btw, I will probably audition the Danley SH50 any day now. That's another highly regarded horn construction. I've asked Bjørn for an audition of his system, but he's a busy man. But hopefully I'll be able to hear it in the not too distant future.
I had a pair of Klipsch K-402 for several years. They were sold quickly when we developed our own horn. The difference was bigger then I expected. Smoother, more relaxed, more natural sound with more energy in the highest frequencies. The off-axis measurement was improved. A large horn system with constant directivity is amazing IMO.