I am quite confused how a speaker can produce two or more different frequencies at the same time ? Let's consider one instrument to be the thud of the kick drum Let the second instrument be a Shakuhachi flute. (From Enigma Sadeness) Let us have only one speaker( like in most of the headphones) Now how is the speaker able to produce the sound of both the thud & the flute at the same time ? Considering the sound of the flute to be 5KHz, and the kick drum to be 100Hz, how is the speaker able to move at both frequencies at the same time ???