06-18-09: Sidssp
No, you cannot rate speaker cable this way. Speaker cable has no "sound" of its own. A speaker cable can "sound" warm and slow in one system but detailed and open in another. Amp, speaker cable, and speaker must be viewed as a whole.
Hmmmm....gets complicated doesn't it?
OK, no wire or cable has a sound of its own, but because it is an imperfect transmitter of signals, a wire or cable can change the sound of a system. So, you are correct that the system is important to the discussion. This also means that the change for one system will not be exactly the same for another system. However, all designers of cables should be trying to eliminate the imperfections of the transmission medium to give the best reproducted sound. From this perspective cables that get closer to this ideal goal should have similar characteristics and hence be less sensitive to system parameters. We should be able to identify and quantify these characteristics.
However, I suspect part of the problem with this line of ththougt is the flaws in other parts of the system. To explain, I beleive many owners may be using one component of a system (cables for example) to compensate for flaws in other components in the system. Perhaps your speakers have a tendancy to sound a little "hot" so when you use speaker cable "X" the sound is somewhat tamed and much more neutral. In fact you could be using a small flaw of the speaker cable as a filter in your system. For someone else this flaw in the speaker cable shows up as a terrible hindrance to the overall sound. Hence different opinions for same cable. I don't know how we can get away from this problem until will learn how to properly "measure" all the important characteristics of a component (not simple to do at all).
I will agree that because the speaker side of the system is fairly low in impedance and the wire characteristics and flaws likely have much less impact because of this. However, for interconnects the wire flaws and characteristics play a much bigger role due to the higher impedances involved.
ROVA