BTW, I've previously built a successful three-way speaker using Soundeasy, IMO. This three-way uses a Satori 6" woofer, two Audience A3 drivers as midrange, and a small RAAL 70-10 ribbon tweeter. Maybe I was lucky.
This time, the drivers of the three-way speaker are already mounted in a 1/2 cu ft cabinet -- doesn't look bad, although had to do some serious driver-flange cutting and cabinet mods to fit all the drivers on the front baffle. So, mounting the drivers wasn't easy.
This pair of new three-way speakers use the Seas W18, two A3s as midrange, and the big RAAL 15-140D ribbon tweeter. Yes, this project is a challenge. Like climbing Mount Everest, it cannot be easily justified.
However, I'm sure that this speaker build will be successful --- if only I can solve the Soundeasy problem with the crossover design that I mentioned.
Bill