If you google the white paper for the Thiel CS6 speaker, you will find that Jim Thiel was addressing time and phase coherence and energy storage decades ago. All of the things that have been mentioned here is not new. I’ve had my CS6 speakers for 16 years now. They still thrill me, especially with my new monos and digital front end (vinyl is still king). Occasionally I get to hear some newer speakers but nothing good enough to drive me to change. The new Sasha DAW sounds good- nice bass. Still, I just can’t see them moving into my listening room. Oh, if they had thrilled me I would have tapped my 401 for them. I would like to hear the Magico’s sometime. 6 hour drive for me but why not? I’m retired and I got my 2nd shot yesterday.
Sound quality of Newer versus Older speakers
From a sound quality perspective, is there anything that newer speakers are doing better than older speakers. For reference, I have a pair of Monitor Audio Silver 300s which are amazing me with their ability to balance detail retrieval with an ability to avoid harshness (with the right ancillaries). My subjective perception is that this type of balance between resolution and refinement was more difficult to find in speakers from 20-30 years ago.