@treepmeyer posted, quoting from Theoretica’s website:
"An ongoing investigation of speaker directivity at Princeton University’s 3D3A Lab, has shown that dipole speaker designs, electrostatic speakers, as well as speakers with horns and waveguides offer significant advantages in 3D imaging with BACCH® 3D Sound in highly reflective rooms..."
Very interesting. These are pretty much the same conclusions I arrived at in my own explorations of loudspeaker design and room interaction (for unprocessed two-channel stereo). I like some of the attributes of dipoles and some of the attributes of horn/waveguide type speakers.
Duke