Regarding my previous post, when I said:
During one half-cycle of each of the frequencies that is
present the current corresponding to that frequency flows in via the positive
conductor and out via the negative conductor. During the next half cycle of
each of the frequencies that is present the current corresponding to that
frequency flows in via the negative conductor and out via the positive
conductor. The directions of the current in each conductor continue to
alternate during successive half-cycles.
… it occurs to me that some may interpret this to mean that
current flows in both directions at the same time, as a result of the multiple frequency
components that will be simultaneously present in a music signal.
To clarify, I did not mean that.
At any instant of time current will flow in one direction, corresponding
to the polarity (plus or minus) of the voltage that is being put out by the
signal source at that instant. The
contribution of each frequency component that is present to the total current
may make that total either larger or smaller at a particular instant depending
on which half-cycle of that frequency component is present at the particular
instant.
Hopefully that clarifies more than it confuses :-)
Regards,
-- Al
