frequency response - B&W vs. Monitor Audio

The lowest note on a standard piano is A1 @27.5hz, and if you double that to 55hz that is the next A up (A2), you IMHO
are missing a lot of musical sounds from below 50hz ie some low notes on a bass guitar,synths,organs etc and that last octave again IMHO is vitally important for depth, unless of course you only listen to the Triangle, Flute or solo Violin music.

Magfan you are indeed correct, the Bosendorfer mental amount of $$$ Imperial (best piano on the world by a long stretch)goes down to C (additional 9 notes) to give a full 8 octaves, so A below A1 (if there was one) would have a Hz of 13.75 add a few (can't remember the multiplyer to give a semi-tone increase (been a long time since I was at musical instrument technology college), and it is still
rather lowdown Hz wise.I've only ever played on the Bosendorfer 7'+? model daily (way back), what an instrument that was! Having only tuned piano's (back in the day also) with the Standard A1 27.5hz(that is/was hard enough to do) the big fella must be a piano tuners nightmare all those additional notes in the bass, if you have a cold, forget it pack up your tuning crank, go home, you ain't gonna hear the 'beats' that low.

Dylanhenry-, there must be a reason why speakers (tweeters) go way beyond the human ear for defining a positive musical note and ampfliers to take the Musical Fidelity amp the 'Titan'(just as an example as I sure all amps go way beyond 20khz) can hit nearly 100khz, now the human ear because we do not have the hearing of a dolphin, or even an elephant, we hear very high khz 'Harmonics' way above 20khz, which is what every musical note has, which is and I quote;

'Any of a series of musical tones whose frequencies are integral multiples of the frequency of a fundamental tone'.

So although one may hit the middle C key on a piano we actually hear the harmonics of that note way up into the stratosphere of khz.How high up? who knows?

Apols to the OP, sorry my posts are off your subject.