Awesome article.
My first system back in the late 80s had the Coustic 360 on my MTX terminators and a Coustic 260 on my Boston RX67 coaxials with the Coustic 3 way crossover: Those were the days. Lots of great products on the list.
I couldn’t afford the MB Quart and the Phoenix Gold stuff yet.... had to get a better job before I could upgrade. Very nostalgic list....