Good point, JohnB, but I think they DO know the difference. They just don't know why. In other words, they know that they either liked the show, or didn't, but they don't realize that a big part of their reaction is due to the quality of the sound that came out of the speakers.

Willie-O, I stand corrected -- the gender-neutral term "sound tech" is the best one to use. I also agree with the rest of what you said (and PeteBoom as well -- good idea on sharing sound tech responsibilities with other musicians).