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


Since I have a slight grasp on the history or loudspeaker design. And what is possible with modern. I do wonder if we have really made that much progress. I have access to some of the most modern transducers and design equipment. I also have  large collection of vintage.  I tend to spend the most time listening to my 1930 Shearer horns. For they do most things a good bit better than even the most advanced loudspeakers available. And I am not the only one to think so I have had a good num of designers retailers etc give them a listen. Sure weak points of the past are audible. These designs were meant to cover frequency ranges at the time. So adding a tweeter moves them up to modern performance. To me the tweeter has shown the most advancement in transducers but not so much the rest. Sure things are smaller but they really do not sound close to the Shearer.  http://www.audioheritage.org/html/profiles/lmco/shearer.htm
128x128johnk
Atmasphere Capacitors have existed in some form since the 1740s silver and gold are not advancements just evolution of early design. Your TAD drivers all based on early 1920s designs,the horn of the CAR is just a evolution of a 1940s design. OTL amplifier is from the 1950s sure you improved but you didn't create invent. Thus my point about real progress progress in orignal design and thoughts. This to me seems missing today.

Perhaps there cannot be any more breakthroughs for a very long time, who knows? When all you really want to do is sell sell sell, you will create nothing except more ways to sell.
One does have to take a financial risk when working with or bringing out new innovations could be a bit of corporate repression of design in favor of safe bets thus more profit? Could be that reproduction of sound for human use can only be effectively generated by a limited num of combinations thus replication? Maybe humanity copies and improves more than invents and innovates? Maybe my perceived biases do not allow me to see or hear all the massive innovations in audio reproduction?  
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