From that thread (and not posted by anyone that I know):
I did not see your high school debate team techniques employed on that poster. Are you making a point, or merely trying to run me off? I'll gladly leave if it will make you feel better.
That was I. And it was only directed at people who try to use the radio frequency formula at audio frequencies.
One of the Ocos cables made an attemp, but it's a moving target.
Cyril Bateman in his "Measuring Speaker Cables" showed just how much work it is to measure Characteristic Impedance at audio frequencies. You have to measure all the parameters at each frequency of interest.
Cyril Bateman Articles
Electronics World Magazine
Measuring Speaker Cables: 1 Cyril Bateman Dec 1996 p925
Measuring Speaker Cables: 2 Cyril Bateman Jan 1997 p52
Measuring Speaker Cables: 3 Cyril Bateman Feb 1997 p119
Capacitor Distortion: Part 1 Cyril Bateman July 2002 p12 S
Capacitor Distortion: Part 2 Cyril Bateman Sept 2002 p16 S
Capacitor Distortion: Part 3 Cyril Bateman Oct 2002 p12 S
Capacitor Distortion: Part 4 Cyril Bateman Nov 2002 p40 S
Capacitor Distortion: Part 5 Cyril Bateman Dec 2002 p44 S
Capacitor Distortion: Part 6 Cyril Bateman Jan 2003 p44 S
Capacitor Sounds II: Part 1
Real-Time Hardware Cyril Bateman July 2003 p36 S
Capacitor Sounds II: Part 2
Distortion v Time v Bias Cyril Bateman Aug 2003 p46 S
Capacitor Sounds II: Part 3
Distortion Meter Cyril Bateman Sept 2003 p46 S
Capacitor and Amplifier Distortions Cyril Bateman Nov 2003 p44 S
Simulating Power MOSFETs: Part 1 Cyril Bateman Oct 2004 p22 S
Simulating Power MOSFETs: Part 2 Cyril Bateman Nov 2004 p26 S
Simulating Power MOSFETs: Part 3 Cyril Bateman Dec 2004 p10 S
Simulating Power MOSFETs: Part 4 Cyril Bateman Jan 2005 p34 S