Length of speaker cables

Mr.  dannad
I see no particular reason why would you argue over things that you never had tried, but only critic. This is beyond understanding.
Your say about AC and Impedance are all wrong! Do homework and see: 
Wikipedia is explaining DF as: (https://en.wikipedia.org/wiki/Damping_factor)
"damping factor gives the ratio of the rated impedance of the loudspeaker to the source impedance. Only the resistive part of the loudspeaker impedance is used. The amplifier output impedance is also assumed to be totally resistive. The source impedance (that seen by the loudspeaker) includes the connecting cable impedance."

You assume that the "load impedance is equally important".
I say that the load impedance is insignificant in my analysis.
Even though, they are called "Speaker Cables", they are part of the Amp's output stage and the load.
Look at the Wikipedia / DF again. It is specifically says so.

On my side I can say that my calculations been proved many times to be accurate and be the best cable for the system. I also checked that adding thickness above that value is insignificant!
It sounds the same as the calculated thickness. 

However, all others: you, the big cable brands down to the last of them - have no idea what cable you need for your system.
That goes down to the sals guys, that spread BS with a shovel.
As you can see on my recommendation of the #8 AWG cable, it is not reaching US $50. For that money you mostly buy nothing from a big cable brand. At the time that nothing will sound better than the $50 cable at this particular system.

Mr. gdnrbob

Do you really think and recommend to use a copper wire between your Amp and speaker as the sound tweaker (Equalizer)?
I'm sorry if your taste buds would like better the sound of a poor cable over a good one.
I've seen the fenomena.
I was involved in a demo that the guy had some "MID" fetish. He loved his mid. As the #0 AWG cable was connected, all the sudden a deep rich bass stepped in. Like a good sub was added.
He said that the #0 AWG cable killed his mid!
What it did, is only enhanced the lows. The sound was clear and dynamic. Resolution was better. But he loved the mids and nothing more. From the levels of volume he liked to listen, I think he had a survivor hearing problem. But why do a calculation or a measurement, if that condition (no common sense) is the judge?
  

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?

Mr. dannad

I didn’t defined what DF is or how it is measured. Don’t blame me on that.
However, we should all use it as is. You can’t go in your own way.
DF is not about energy transfer. Its is about controlling the load (comlex).
If you would like to compare it to a car engine, as Power of an Amp. in Watts, equals to an engine power in HP.
The DF is the equivalent of it’s torque. No matter how much power your engine has, a poor torque will custrate it. So using thin cables on a high DF Amp. is like using a thin tube drive shaft that tumbles, or one made of rubber, rather than steel.

Did you ever try what I’m saying, before you go on and on arguing?
From your basics misunderstanding the roll of the cables, the DF and the link between the two, I assume you just argue for the fun. No particular reason.

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.