Arrays have got to be one of the most interesting types of loudspeakers. In fact, it shouldn't even be thought of as one "type" because there are so many, and they each do such different things. Line arrays, Bessel arrays, Cardioids, Cubes, Spheres, Hemispheres and the list goes on and on.Dr. Jim, if you're still checking in from time to time, how 'bout giving everyone a quick introduction to the various types, what you think works best in various situations and why.
I'm having a hard time understanding why this fascinating field of study isn't more popular here. Maybe it's just the newness of this place, but I'm left thinking "where's the beef?"