I would really like a pair of AMT 1’s from 1974, sealed box woofer. ESS used cheap woofers in well-designed heavy boxes. The woofers were of the rolled pleated edge surround system, unlike todays cheesy foam surrounds. Rolled edge speaker surrounds do not rot or turn to dust. I currently have a pair of Electro Voice EV7 in the garage. I would bring them in, except the vinyl clad exterior is peeling in a crappy way leaving a speaker covered in aluminum foil that is glued to the plywood. 1960s technology that delaminates.
Buying used vs new speakers from a technology perspective
Do you believe a speaker's components like drivers and crossovers can become "outdated" for lack of a better word? For instance say someone is selling a pair of speakers that cost $10k in 2008 for $5k now. Comparing that speaker to a modern day $5k new speaker only looking at driver design/drivers, cabinet construction, crossover components/layout and other materials what kind of technology gap are we looking at?
Have there been technologies or designs that have come out in the past few years that you couldn't live without after hearing?