Warm and Detailed S.S. Amp?

Upper bass, lower mid, upper mid, lower treble...

Sometimes, I wonder if we're all discussing the same frequencies when we write about these things.

Specifically what frequency ranges define these terms?

OK lets see if we can reach an agreement on that 'simple' request. :-)

I nominate 100 to 300 hz for upper bass/lower mid range and 1500 to 4000 hz for upper mid-range lower treble.

Are you keeping score Tvad? :-)

No. It is 114 to 354 Hz and 1257 to 3643 Hz with 14dB per octave rolloffs.

My question is genuine. I don't believe we can have a discussion about upper bass, lower mid, etc if we all are talking about different frequency ranges (or even worse, if we don't know what frequency ranges are involved, which is a scenario more common then we might like to admit).

Robert Harley, in " The Complete Guide to High End Audio" defines them thusly:
16Hz-40Hz Deep Bass
40Hz-100Hz Midbass
100Hz-250Hz Upper Bass
250Hz-500Hz Lower Midrange
500Hz-1000Hz Middle Midrange
1000Hz-2000Hz Upper Midrange
2000Hz-3500Hz Lower Treble
3500Hz-6000Hz Middle Treble
6000Hz-10,000Hz Upper Treble
10,000Hz-20,000Hz Top Octave

OK I vote for Harleys definitions! Now just tell me when I'm listening to the fat lady sing how i know when the high note is 1500 or 2500 hz.

Maybe in addition to Harleys breakdown, we also need one of those charts that show the range of all of the musical instruments etc so when I describe low bass coming from a flute you can look at the chart and tell me I'm FOS because a flute don't go that low!

Tvad, I'm kidding!!!!!!!!!!