Why the obsession with the lowest octave


From what is written in these forums and elsewhere see the following for instance.

Scroll down to the chart showing the even lowest instruments in this example recording rolling off very steeply at 40 Hz.

http://www.homerecordingconnection.com/news.php?action=view_story&id=154

It would appear that there is really very little to be heard between 20 and 40 Hz. Yet having true "full range" speakers is often the test of a great speaker. Does anyone beside me think that there is little to be gained by stretching the speakers bass performance below 30-40 cycles?
My own speakers make no apologies for going down to only 28 Hz and they are big floor standers JM Lab Electra 936s.
mechans

Showing 3 responses by kijanki

Mechans - Quality of the bass is more important than extension IMHO. My current speakers have larger drivers and more volume than my old speakers but extension is slightly worse. Dynamics, attack and decay of the bass, on the other hand, are much better. It has to do with tuning for the lowest distortion and not for the extension. Of course it is the best to have both but it also costs both - an arm and a leg.
"Having a tweeter than goes well above the audible frequency range just allows a better reproduction in the range that you can hear"

Not necessarily - it might distort more at few kHz range.
Mixing two different tones is another story but the lowest frequency is called root and the rest are overtones that are higher. When you play instrument with complex harmonic structure (typical for percussion instruments) like piano - each key produces tone and overtones. There is no sub-overtones. The same is with guitar and many other instruments. Some things like bells produce subharmonics but for the rest of the instruments it is not common. You can obtain subharmonics with violins using special techniques (not very common) but you won't get it from the piano's individual keys.