You can not measure this supposed extra hi or low frequency content since it does not exist. Your just confusing capacitance and resistance and how system reacts to such. This is the main reason cables sound dif from one another. Toss in system interactions. RF pollution etc. I do use hi quality cabling but I do not fall for the BS the cable industry puts out.
Copper and silver cables and bass response
Just changed out my Kimber KCAG silver cables and put my old Tara Temporal continuum cables in my system. Wow the bass was more powerful and deeper. What gives. Should I not use silver between my amp and pre amp? I read a while back that silver is best between other components. Is this more or less true? The KCAG's were more detailed. How good was the Tara Temporal continuum in their day? any opinions appreciated. mike