Feel the most famous single driver speakers would be the Bose 901. Yes they had multiple drivers but all to form a single driver in basic delivery. What was the quote “ no highs no lows must be Bose”. I did and still have a pair. Need an amp that had a power supply that could double as an arc welder to drive them properly. Sansui 9090 Them run through a eq to shape the sound by bending the wave form to an extreme level. Yes set up right and playing loud to an over served crowd they sounded good. Set up with a quality system in a listing room you keep struggling to try and hear what is in the music you know is there but you can’t hear it. I have never heard ZU speakers but they do have a good reputation and following——
