No one actually knows how to lculate what speaker cable they need

@b4icu 

No matter how good you get, beyond the standard purity of 99.90%. All the difference in conductivity is below 0.1% and no one would notice an audible difference in such a small difference in conductivity.

The whole issue of hearing a difference, in the context of everything else going on in a home audio system, becomes even more incredible when you consider many audio companies (and many cable manufacturers) still use brass (or another low conductivity alloy) in their connectors......that's right, your new $27K Lamm M1.2 Reference monoblocks use "brass" binding posts!  Amazingly, they still sound great. 

Another example is most banana connectors, which are made from a copper alloy such as brass, bronze, or beryllium copper.  Those three alloys have an associated range of conductivity of about 20 to 50 percent of IACS (International Annealed Copper Standard).  I believe the best of that group is Grade E phosphor bronze at about 48% IACS - Furutech uses that metal.  If you can find connectors made from tellurium copper, they are rated much higher, at about 93-94% IACS, which is close to the conductivity of pure copper (i.e., about 100% of IACS).  There are a few banana connectors I know of that are advertised as being made from copper -  KLE and Xhadow, and Furez that are reportedly made from tellurium copper.

Mr. stevecham

1.        Let's check what the threshold of our audible ability is. The Hi-Fi STD used to be -3dB which is half the amplitude. That’s a lot.

On personal tests with a 1/9 DSP octave parametric EQ the threshold was at -0.5dB.

A 0.1% in tolerance converted into decibels is -0.00869dB. No way you hear that.

2.       Conductivity is 1/resistivity. Conductivity is measured in SI, Resistivity in Ohm.

A resistor of 0.1 ohm has a conductivity of 10 SI.

3.       When you get a 0 AWG cable, that has a 0.1% loss due to none purity dos not equals to a 14 AWG that has a resistance of 2.52 Ohms per 1000m, vs. a 0 AWG that has a resistance of 0.093 ohms per 1000m. This ratio is of x27 times or 2,700% (not 0.1%)!

So far, those who gave it a try, say I'm right. What would be your explanation to that, with your theory…? (At a time you have no idea what is my formula!)

 

Mr. mitch2

You kind of have a point.

Some get hysteric about 0.999% purity in cooper wire vs. a 0.9999%! At a time some way bigger issues are hidden below the cover of our equipment.

None is treated for directionality, cryogenic, skin effect or high purity cooper. They are all standard wires and PCBs.

Most so called hi-end cables, pretentiously use superior materials and look are practically poor conductors for the task of most amplifiers (thin wires). Those are not a match and never been calculated for the task. My idea, of having the optimum conductor (calculated) from materials that are not so pretentious or superior (by purity or any other crap), do the job and get fantastic results. It is time to weak up and faces this reality.

Mr. b4icu,

"When you get a 0 AWG cable, that has a 0.1% loss due to none purity dos not equals to a 14 AWG that has a resistance of 2.52 Ohms per 1000m, vs. a 0 AWG that has a resistance of 0.093 ohms per 1000m. This ratio is of x27 times or 2,700% (not 0.1%)."

I cannot believe we are having this discussion. This is not real world. Tell me exactly, please, who, in the reality I live in, uses 1000m of speaker wire? An aircraft carrier? If there are audiophiles on such ships, then they are your market. Go get 'em.