A New Believer

I have listened to many systems over the years, and have never appreciated the difference speaker cables can make to a sound. In fact, I was so skeptical of the sound changes they can make that I have always not bothered with any special type of cables, generally going for generic (and dare I say it) roughly made ANY copper wire plugged in to amp and speaker. Well, imagine my surprise when I decided to do a blind test and listen to what difference cabling can make. Wow, my Vand 3A Sig's had been getting strangled! (some of you guys may want to strangle me if I told you what connects I had been using). So I am now a firm believer, cables DO make a difference.
The only possible differences are with respect to R, L or C. If anyone can explain how the resistance, inductance and capacitance of wire change the quality of the sound, they should say so. While that person is at it, he should state how that quality is measured and what equipment can be used to do so.
The r,l and c of the cable interacts with the source r,l and c and the load r, l and c to very the frequency response and phase shift of the audio signal. Also shield effects rf pickup by the cables that get fed back to the amplifier and fed back to the input by the amps feedback loop. These few factors alone can alter the sound of various cables in any given system. The differences can be small or very noticeable or not noticed at all
Would you agree that "immeasurably small" is the same as "not noticed at all"? Therefore something "very noticeable" ought to be measurable, correct? If so, please advise where in the literature of cables one can find a side-by-side comparison of phase shift or frequency response pitting one cable against another under identical conditions.

I would also contend there is no way a reasonably short cable (<4 feet) could possibly contain enough capacitance to affect the loading of the input, though there may be some poorly made beast out there that does. Shielding is a different issue, which can affect sound, particularly in low-current turntable connections. But added RFI is not the issue; sound quality is. I still don't know what independent variable can be assigned to a cable for this.