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?

I love it..Rollin' on the ground...

I use a SVS Sound Cylinder (round tall sub) for my home theater room. It hits pretty hard and tight, but then again I’ve not heard the best in class, etc.

It beats a poke in the eye with a sharp stick, as we say in these parts!
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