Length of speaker cables

I can only assume then b4icu that you are unable to discuss and / or justify using on a DC damping factor and your level of knowledge is Wikipedia?  People who know there topic well don't tend to call on Wikipedia for validation.


DF is a definition. That is all. It does not define the totality of energy transfer from an amplifier to the driver on a load speaker.

Similarly, the cables are as much the first part of the loudspeaker as they are the last little part of the amplifier no matter what you have interpreted from a Wikipedia article.


If you up can't even address the impact of cable impedance on signal transfer of an AC signal a figure which carries far more meaning than a DC DF, then how can I take you seriously?

As audio signals are AC and hence impacted by impedance and not simple resistance, I am not seeing the technical merit nor the evidence of engineering or science of using a simple DC value for dissipation factor to determine a cable. It also only considers the source impedance but not the load impedance which are equally important in energy transfer.


If someone would like to post their reasoning so that others could analyse that would be beneficial.

I don't think you want to play this game with me. Given you need to use Wikipedia for validation, I don't think you are qualified to go down this path.

From your basics misunderstanding the roll of the cables,

True DF, not just DC DF, is not constant. In fact, most people don't use DF in a blind DC fashion, but refer to DF as a variable that changes with frequency, and it most certainly does, sometimes a huge amount over frequency depending on the amplifier architecture.


Of course, there is the simple fact that the "load" is much more complex than just the two terminals on the speaker, and if you are talking "control" there is quite a bit between those terminals and the air moving, and that load is not constant either, but changes with frequency.


And yes, it is about transferring energy, and you can't control the load, unless you are transferring energy, and as it turns out, the point of maximal energy transfer is a good approximation of best load control. Ultimate load control, i.e. lowest distortion movement of the speaker element, is not at all guaranteed at the lowest damping factor / speaker cable impedance. In some cases, some resistance is a good thing as it damps speaker movement so it stops in a controlled fashion as opposed to ringing.  Think of overly stiff springs poorly matched to shocks and you will get the idea.


Of course, when you realize that voice coil resistance and component impedance can be several ohms, and varies with manufacturing and temperature by several percent, that talking about resistances of 0.01 or less becomes somewhat meaningless.