What Do You Think . . . and How Does It Work?


While watching vids on YouTube, I came across this pipe speaker design from a Dr. Linkwitz (see below).   The sound of this speaker is said to be impressive.  I was wondering if you know about this, how it works and what you think of this speaker design.  Also, what do you think would be the best room placement for such a speaker, and would you be tempted to build them?

https://www.linkwitzlab.com/Pluto/intro.htm
bob540
@gregm:  I’m don’t really have the room for them, especially since they need space to sound their best.  But for the price, they are interesting.  If my patio were covered or enclosed, that might be an application worth considering.

I wondered what the two drivers at the top, one facing up and then one facing forward right above it, do for the sound?  
Linkwitz was one of the contemporary gurus of speaker design (think LINKWITZ-Riley crossover, etc). His site is full of invaluable info
i dont know any speakers made by him. The crossovers bear his name but they were WRONG.