HOLOGRAM,
Appreciate the site link. Really good info. Had not seen it before. Again, as I stated (and I do not want to start an argument here) different folks have different definitions or opinions about this. The Recording Institute of Detroit has a different take on what frequencies the midranges are - and you can visit their glossery site here: http://recordingeq.com/reflib.html

Personally I am confused as to why frequencies so low would ever be considered "mid-range". When you consider the (so called) normal spectrum of human hearing 20 - 20,000hz, the middle would be 10,000hz. And even if you consider that most prime music frequencies (not harmonics or transients) are created below 10,000 (and we use that number as the top end) then the mids would be at 5,000hz.

To me it doesn't really matter too much what they are called as much as how we percieve them. But a common language (with understood definitions) for communication is beneficial for all and we should strive for that - so I have no problem with using the one from "Stereophile"