If you’ve ever gone to a concert, you need to thank this guy.
Back in the 1960s when rock was young, PA systems were puny and awful. No one had given much thought on how to make live music loud and clear. Then there was the matter of miking and mixing. Concert sound was not just only an ad hoc affair but often an afterthought.
Enter Bob Heil. Starting in 1970, he began a run of innovations that revolutionized concert sound.
More here. (Via FYIMusicNews.ca)