Difference between today and yesterday.

One of the big differences between today and yesterday is that speakers of yesterday were designed around analog sound and equipment. Whereas today, they're designed around digital sound and equipment which is a more cold sterile sound. That is why it would be hard to compare, even given the newer technology.
Any of the old Bozak speakers have stood the test of time.
Rudy Bozak was way ahead of his time!

Well Rodman, I do and that is why I stuck with my Quad 57 and later the 63s for such a long time and when I was younger and wilder, to get a bit more SPL I stacked and even quadrupled the 63s and combined them with Maggie Bass panels. It was a weird setup but it worked quite nicely. I almost liked the a-Capella horn speakers, but I could not get the livelyless, the P.R A.T. I was used to, so I only took the plasma-tweeters and integrated them with the 63s, suddenly getting much more tranparency. I've now settled with the big Sound-Labs after a life time of Quads. I am happy, but I've decided to keep the plasma tweeters. so I've gone from conservative old to new, but it took me practically half a lifetime, not counting my being unfaithful to the stacked 57s.

Eldartford confuses technique with technological advancement.

Douglas_schroeder...How so?

Detlof- Was that the IONOFANE Plasma Tweeter? The technology on that piece goes back all the way to 1951!! Of course- improvements have been made since then. How I wish my present listening room could justify some large (new technology)stats like the Majestics. The longevity of the Quad units(and modding) in your systems speaks to your taste for reality in your listening, your update- to your striving for musical truth. KUDOS!!