I remember an old buddy of mine using a pair in his band. I think they were used with the horn mikes. I think 802's were more often used that way, since they had 8 drivers, all front side. My wife and I sold T shirts at the Chicago fest in 1980 and they had a stage full of them. It was a big Bose push at the time, some ridiculous number of the Bose amps (1801's I think) and pairs of 802's. 32 pairs or so, might have even been double that. It was a helluva lot of speakers. Can't remember. It was kind of impressive but it did lack bass, compared to the other stages that used normal PA stacks and such. Still, it was kind of fun to see and hear.