P.S. I do simulate and measure power response / directivity in one way or another for every design. RE: DSP, yes I like to design both active and passive speakers, without and without DSP involved.
P.S. I've only done a little poking around so far, but VituixCAD seems like a dream come true. I am beyond impressed. And the documentation web page, wow. If I had a resource like that page when I was starting out I would have been at my current level in six months (not that I regret the time spent figuring it out, I loved it).