What are the specs of a full range speaker?

My experience with with sub 30 Hz in music is limited to just two audio systems, and our piano. When my wife is pounding out Grieg there is a lot more surfaces involved than the vibration of coiled wires.

I have a friend who is a conductor. I helped her find a house in Sacramento years ago. She had two requests. The house had to have a room big enough for her baby grand, and it had to have a wood floor.

If you want to hold a grand piano concert in your house, then you better have the real thing or speakers that can put out the power, and range of that piano.

Muralman1, I agree, and then some.

The real thing is the only thing! No audio system will ever come close, not by a great margin, to ever reproducing the dynamics and power of a grand piano. Anyone who thinks otherwise hasn't been listening to much live piano music, in the home or concert halls. And it ain't just the sub 30's either. JMHO of course. :-)

DC to daylight.

Newbee, Don't be so sure. I have both. It was an Apogee Scintilla in a large stiff listening room that fooled me into believing I was listening to a pianist playing a grand. It did appear to be somewhere in the distance, as down the hall. I was awestruck. My present system takes my Scintillas to far beyond what was possible when they were made. It may be lunacy, but my goal is to duplicate the piano.

I wouldn't be the first. An Apogee enthusiast conductor use to give Mozart lectures at the Smithsonian's display containing the composer's piano. For fun, he would run a blind test on the audience. Alternating between the real deal and an Apogee Diva system. He asked the audience which they thought was real.

The Scintilla is even more convincing with the piano.

Muralman1, I can't dispute what you've heard. Certainly I've not duplicated your experience. FWIW, and not a real comparison, but I'm sure you've heard a stereo system playing 'upstairs'. For those of us who have lived in flats or apartments/condo's etc, that would be common. Well when I lived in a flat in SF the upstairs unit had a grand piano - it never, ever, sounded like a stereo system. Especially transmitted thru the floor above. You knew what it was instantly - there is a whole lot of 'vibrations' going on with a live piano at all frequencies that just seem to elude (most?) audio systems abilities to reproduce with the same degree of dynamics as a live piano.
BTW I assume you meant by 'in the distance' that the sound seemed a bit compressed as compared to 'live' and that certainly would be one of my points of comparison. :-)