Loudspeakers have we really made that much progress since the 1930s?

Wouldn't Eric Alexander's patented speaker array on the Double Impact qualify as an advancement in speaker design? It hasn't been done that way previously, it is revolutionary, it works extremely well, and those particular speakers are seamless top to bottom. 

So i just noticed this thread but wanted to mention listening to a friends Shindo Field Coil  speakers some months back, the bigger model can't remember if that's Lafond or Lafite. They had just been shipped to him and one of them wasn't functioning properly, turned out to be an easily fixed loose connection, so we literally spent the evening listening to just one speaker. The system was all Shindo with a Luxman DAC. Far and away the closest sound I've heard to real musicians being in the room. Not just music but intent if that makes any sense. After a while we hooked back up his previous speakers, Devore Orangutans and they just sounded "broken" to me. And that's with just one channel versus two! Downsides the Shindo's are crushingly expensive and each box is the size of a large refrigerator. My friend ended up buying a house in the country to house the monsters.

@greg22lz    

Multiple driver designs are actually old school designs that have been tried and were not successful. Even Macintosh built a speaker just like Eric's. Bose tried this too.

so the concept of speaker array isn't new but his execution of it is, correct?

Also, Eric's design and execution is successful.