Thanks, But yet I do not know what they mean by this:
"With no horn the cone movement increases 4 times for each octave decrease. With a horn the speaker cone movement is reduced to 2"
I think apart from using or do not using a horn on a speaker the speakers cone must moves just according to the frequency of the signal. Am I wrong?
Suppose the input frequency is 1000Hz then the cone moves in accordance to this input frequency, If the frequency happens to be reduced to one octave (500Hz) the the cone moves in accordance to this later frequency no more no less, right?