Might have been Geithain speakers. Everything I've read about them they are incredible speakers, cartoid down into the bass. You don't hear much about them outside of Europe. I believe they sell direct in the US but you get no support.
https://www.me-geithain.de/en/rl-901k2.html
https://www.me-geithain.de/en/rl-901k2.html