I collect Hi-Fi advertising as well as gear. I came across this sign sometime ago at a garage sale, I figured it had to be for infinity speakers but am not 100% sure. Anybody ever see one? I'm guessing late 80's early 90's as to age of it. I also think it may be supposed to change colors.
I thought the same thing about the symbol. It is a commercial made sign so unlikely they forgot it. Also strange is that I see almost every brand of speakers made in my area but almost never Infinity.