More than that it does the job. The vacuum caps are only for the tweeter and the upper-mid beryllium. Still they are bridged with micas as they wont do much alone. Adding vacuum caps smoothens the transitions and sounds very neutral while doing it, at least to my ears.
The room is not yet integrated with the speakers. I am positioning them (thanks to the wheels) and the acoustic panels, then listening for some time. It looks like it would take months for me to be really satisfied with the setting up. This is no problem though, this is the case with such a complex system. The glass windows disappear when I press a button and my cinema screen comes down. It is not acoustically transparent, so it subdues the glass reflections...
What I can say for the sound. I can say this is a subject I don't like! Still I can say, there are not many problems with the horns. I have aligned them yesterday more precisely and they integrated better. As I am about 470 centimeters away from them, alignment is not a big issue. 200 hz horn is about 3,3cm closer to than the fostex, the 475 is about 0,2 and the bass horn about 5,92cm closer.
I took the 200hz horn 5 centimeters higher and it really helped with the reflections of 1400 hz jmlc. I found out, every driver needs a bit more space than I assumed. So the system is now about 13 centimeters higher. When I cut the wheels out after I am happy with their positions in the room, it will bring it down 8 centimeters. Overall height will be close to my first approximation with the drivers being more apart.
It seems I will have to fix some feet to the bass units, they do not like to sit on the carpet. It makes them a little sluggish. I have some at hand, so I plan to do it on weekend.
Also the back chamber of the basshorn can take more filling it seems, this is on my weekend to do list as well...
I also tried my tapped horn working below the bass units, from about 20 hz to 40-50 hz and it integrated better than I expected. I may continue to use it. Strauss convinced me at the beginning of the piece "Also sprach Zarathustra" with that sustained low C on the organ
Yes, the crossover looks fancy