I finally started to build my new-old project - 4 pi pro-like using Beyma 15M300, JBL 2426h & Eminence H290. I've two questions:

I saw that you've developed recently new crossovers, I'd like to ask if it fits also to my configuration - or I better stay with the old-one.

Is there any benefits (audiophile point of view) to add Deltas in mid-horns to this configuration ?

Could you resend me plans for this configuration please ?

Thank you in advance, Vlad.

The two-way matched-directivity configuration trades simplicity and fewer crossover points for higher bandwidth required of the midwoofer. The three-way cornerhorn configuration reduces bandwidth, in turn reducing IMD, while retaining matched directivity but it is a more complex system with one more crossover point.

Both designs offer controlled directivity that results in smooth response on and off axis over a wide 90 x 40 pattern. The two-way has collapsing directivity up to 1kHz, becoming constant by 2kHz or so. The three-way begins to become directional down around 300Hz, just above the room's modal region.