> Since Amps are directly proportional to Volts, how can there possibly be
> a phase difference?

"Much to learn you have!"

Take a capacitor: initially it's discharged. Now connect it to a voltage 
source, the first instant you do, the voltage across the capacitor is 
still zero, however a large current (of charges) is flowing in, 
accumulating on the cap's plates thus creating an electric field in the 
cap. Which is proportional to the plate distance, charges sitting on them 
and die dielectric. This field prevents further flow of charges into the 
cap and finally you have the full voltage across the cap and no current 
flowing. Now repeat the whole thing by applying the opposite of the 
voltage, the cap gets charged the other way around, but with the same 
principal timing. Repeat, repeat, repeat... you get the picture -> phase 
shift (90 degrees).

Same applies to inductors (your speakers' driver coils), only this time 
the energy is stored in the magnetic field produced by the current, so I 
and V are exchanged in the timing, but still a phase shift.

That's very basic electrical engineering, you know... but maybe your 
universe is different after all. SCNR

Michael

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