http://en.wikipedia.org/wiki/Double_bass
http://en.wikipedia.org/wiki/Bass_guitar
The above links have no real relevance, just brief histories. As I get older I am disliking hearing bass more and more, especially amplified electric bass guitar which has evolved as a necessity to be heard over louder horn instruments and other amplified guitars. My listening room is about 12' by 18' so should be large enough to accommodate floorstanders but I stick with standmounts. I worry about annoying neighbours too because bass carries more. I have heard floorstanders at a dealers and thought they were impressive but bass dominant. Maybe I heard the wrong ones? I prefer to hear the syncopation or the beats and accents in music, and the tone of instruments played in the middle and higher octaves, and favour standmounts that excel in this area. My mate who is slightly older than me is the opposite and always turns the bass up to maximum. When he hears my system he thinks it's too tinny and doesn't like it. To me the over-emphasized bass sounds awful and swamps the music which often needs a bass line or part to balance or underpin music but most if not all music is firstly written in the tenor and treble clefs, not the bass clef (drum and bass music excepted). Bass needs to be there sometimes for harmonics but I read a lot of comments about gear that 'doesn't do bass'. Also people may dismiss a loudspeaker that excels with mid-range and treble just because they think they don't go low enough. How low do you need to go to enjoy music as it was written?