In the late 70s I had a friend who's father was in the Marine Corps, and was stationed overseas for two years. When he came home, he had a full system of Sansui and Pioneer electronics and some killer Yamaha speakers that I think were NS???? Played the grooves off of so much southern rock, Eagles, Stones, CSN, etc.
When I got my first real job, bought an amazing pair of Infinity Kappa 9 speakers and a lightly used Pioneer SX-???? Still have the Kappas, they need to be have the crossovers redone, and the cones refoamed.....which I will do next year