Why magic at 80 db?

I have Salk SoundScape speakers that have an Accuton midrange driver. When I listen to music at moderate levels, the music sounds plain. There is little that would make me think that I was listening to a great speaker. When I turn the music up till it reads 80 to 85 db on my Rat Shack meter, magic happens. I guess it is like that with live music, but I am not sure. I never take my meter with me. I am just confused. Anybody have any comments?

Bob