Hi,
Wayne, is the variable L-Pad frequency dependent, showing a different L/R "behaviour" with frequency, or just a "neutral" component more like (variable impedance) non inductive discrete resistors?
Or is it necessary to measure L-pad inductance "L" also?
Cheers.note: I am using L-Pad's in addiction to discrete resistors to achieve a plus/minus output control that you mention earlier in your definitions of a perfect L-Pad xover design.