From the Stereophile article previously linked:
But what Fulton was doing with his loudspeakers struck a responsive chord in many audiophiles. The 80 rapidly became one of the most popular small speaker systems among listeners who were aware of its existence and attuned to the sound of live music. Interestingly but not surprisingly, it had little appeal for listeners with no associations of live-music experience, but the reactions of those who did were positive and, eventually, fiercely loyal. The FMI 80 touched them in a way no other speaker system had, and when FMI announced other, costlier speakers, there was a ready-made market of 80 owners prepared to assume that the bigger FMIs would be just as musical as the 80 but with more highs and lows.
When we reviewed the 80, we did find a couple of relatively minor things to complain about. (Although one of them was not the 12kHz peak that another reviewer claimed to have heard.) And Mr. Fulton responded by redesigning the speaker. He is still redesigning it, on what now appears to be a 4-month cycle.
And when other FMI models started appearing, those too became subject to an endless series of modifications until it became obvious to us that, until we could go from typewriter to post office with the magazine in a month or less, it was virtually a waste of time to review FMI's speakers because they were changing faster than we were publishing. Thus, by the time a report got in print, the speaker reviewed had more often than not already been obsoleted by a later, "improved" version.
Read more at https://www.stereophile.com/content/fulton-musical-industries-model-80-j-modular-loudspeakers-fmi-cult#pmFAGhpBuQJ7FPkY.99
Just one mod away!