When reading consumer and professional reviews of loudspeakers, I often hear terms such as "midbass," "uppermids," etc., etc. when describing the sound. My question is, are there some hard and fast points in the frequency range that corresponds to these and other terms? Is one persons "lowermids" the same Hrz range as someone else's? And what exactly is that range? Is there a link to a chart that sorts this out or does anyone here want to post one?