I was reading a collection of interviews of guitarists in an old book I’d gotten from eBay or some place. Steve Morse was being interviewed. He was asked the following question in 1982!
Why do you turn your slant-front cabinet on its side?
“Instead of having the slant-front focused at your head I turn it sideways so the speakers are pointed out two different ways for a little bit more dispersement. This is one of my beefs about life in the music business: Why can’t they make a cabinet with speakers pointed in four different directions? Why just kill three people in the front row, while nobody else can hear? And what makes it worse is taking a cabinet that kills three people in the front row, and then adding four more exactly in line with that on top. You might as well just have a death ray.”
How cool is that. 
Yessss, that’s it, Igor! We will rule the world with this Death Ray (and this Eb augmented chord)!!!