What does the Diamond Butterfly Speakers do?
There is no vertical dispersion. Furthermore, doing deep-knee in the room would have no effect on perceived sound. Since the sound is dispersed only in the horizontal plane, the Diamond Butterfly Speakers has another interesting and useful characteristic. As one walks toward the Diamond Butterfly Speakers, psycho-acoustically the sound does not seem to get louder. Now, without going into further technical detail let's consider what this all means to the perceived sound in your listening room.

If you were given permission to wander around a concert hall while an orchestra was playing, you would find that as you were nearer to one side of the hall you would still be able to hear the full orchestra, but the "image" of the orchestra would have a different perspective than if you sat dead-center. In beholding this skewed image, the nearer instruments would appear louder than the more distant ones, but they would not mask the latter. You would still hear them.

Now, let's consider the Diamond Butterfly Speakers in the sound room. Remember, its characteristics? As you walk toward it, it doesn't appear to get louder. Stand near one of the Diamond Butterfly Speakers and it doesn't drown out its mate. In fact, you get the same type of perspective that you heard in the concert hall, where each instrument is in its proper place regardless of where you are. This is staging. The Diamond Butterfly Speakers emulates the staging you heard in the hall. The so called "sweet spot" (the position in your sound room where reproduction is the best) is therefore virtually your entire sound room. No "head-vices" are required to secure your ears to the optimum spot. Get up, move around, and enjoy the full glory of your sound system without penalty. This is the Diamond Butterfly Speakers.
For the sake of making a complete statement, at the opposite end of the spectrum is the point source. Most other loudspeakers are point sources. Their characteristics are just the opposite of a line source. As you move toward the point source, it gets dramatically louder. When you are near a point source speaker in a stereo system, you will no longer hear the other speaker because of acoustical masking. Also, energy is radiated vertically, which now opens up another bag of worms: The problem of "taming" floor and ceiling reflections.