Interesting -21st century B&O with a twist.These guys seem to be doing exactly that: https://iko.sonible.com/en.html
Is there any other reason than waste of power for not using a power resistor instead of the 12th speaker? 12 nominal 8 ohm units can be wired to 6 ohms total.
That's cool Dave, thanks.
I wonder if the larger drivers, 5 and 6" make it possible to have enough direct sound, that they can contribute sufficiently when individually steered.
And i like how they kept the face size down by going with 20 sides...like i think you did.