I agree, we seem to agree on most of these points. Thanks for affirming my scaled down test will provide some usable information.

This kind of discussion drives most readers nuts, but between you and me :

[QUOTE]Originally posted by MacGyver
[B]. . . but you cannot say a speaker an resistor have an equivalent impedance (since the resistor has an impedance strictly in the real plane, and the coil has an impedance with a significant portion in the complex plane).