Hi there, I'm doing an assignment on current carrying coils, and I am in quick need of an equation that is relevant to loudspeakers. I am not the brightest physics student (especially when it comes to magnetism and electricity), but if I work hard at a concept I can eventually get it. Anyway, I need an equation that is relevant to how a loudspeaker works, in relation to current carrying coils. Can anyone help me out? An explanation of what the formula tells us and how I can use it to explain behaviour in the loudspeaker is necessary as well. Thanks for your help, much appreciated!