Most of the advances in the last 60 years have been to make speakers more compact rather than to improve sound.
Like everything else these days design has to be market led. I recall a well known designer explaining how a new design begins with whatever the market seems to demand. In his case it was a slim compact floorstander. So right from the bat there were serious sonic compromises involved (thankfully his company do produce a larger more substantial model as well).
Therefore it's good to see that Andrew Jones is able to finally cut loose a little on a design such as the MoFi SourcePoint 10. I guess their feeling is that there is room in the market for a direct challenge to the likes of Tannoy etc.
It's certainly going to be interesting to see what Jones/MoFi offer next.
Earlier speakers that were all out assaults on sound quality were gigantic in size.
The advent of stereo made them even more impractical.
Shrinking the size became even more sensible when the transistor made higher powered amps needed for smaller speakers (lower in efficiency) cheaper to produce.
Good points, especially the first one.
Whatever people think of speakers like the Klipsch La Scala, there's no denying the fact that they make most other loudspeakers sound positively anemic and puny.