I was in college, and instead of chasing women and drinking beer, I hung out at Woodland Stereo. My first system was a Hadley 621 preamp, a Sony TA-3120 amp, probably a Dual record player, and a pair of Rectilinear III speakers. Just about the same time, this dude Arnie Nudell was also hanging out at Woodland Stereo. He had just started Infinity, and Woodland Stereo was the first Infinity dealer, selling the first Infinity product, the Servo Statik I to doctors, lawyers, and movie producers. The SS1 at the time was far and away the best speaker in the world. The KLH 9 was the only thing close.
I became friends with Arnie (and John Ulrich), and started hanging out at the factory where I learned a lot in the design/listening room. I saw enough of the Servo Statik production and tweaking that I have considered buying an old set and restoring them (but I’ve always come to my senses). The second Infinity product was the 2000 (no ’A’) which was the same as the 2000A, but with two RTR tweeters instead of four. Infinity made me a deal on a set of these, and I sold my Rectilinears, replacing them with the 2000s (which I still had until last summer).
I remember the development of the early Infinity speakers, the 1001, the POS, and the WTLC, and the Servo Statik 1A. About then I graduated from college and gradually lost touch. I remember Arnie prototyping a speaker with the AMT, but nothing ever came of it.
Last summer, I bought a pair of 2000As with non-working tweeters. Using parts from my 2000s (which is why I don’t have them any longer) some spares I had, and some eBay purchases, I pretty much restored the 2000As to better than new (better capacitors). And about 18 months ago, I found a local pair of RS1b speakers which I didn’t have the room or money for when they were new. I’m now restoring and playing with those.
P.S. Other old stuff - I have a pair of Chartwell LS3/5As and I built a pair of transmission line cabinets based on the Bailey Wireless World article with KEF B200 woofers to use in a bi-amped configuration to get more bass and power-handling capability. I also bought some KEF T21, B110, and B139 drivers. I recently sold the pair of B110s, and have one T21 and one B139 left, the others having disappeared over the last 50 years.