Directional cables - what does that really mean?

Cbozdog - Mitch2 indicated above that the effect of grain boundaries phenomenon is perhaps "minimal"

But something that has far more impact on SQ than grain boundaries is the cable architecture itself.

Here's a summary of what I have tried and observed over the last couple of years.

I started with Van den Hul d102 MK III using the floating shield design - that proved to be quieter and more detailed than the other cables I had been using.

The problem with more "conventional designs" that utilize two conductors in parallel is that they suffer "noise" that is induced from the signal conductor into the neutral conductor. This flows back into the connected components and impacts their performance. Sure, manufacturers put a slight twist in the conductors which is supposed to minimize induce noise, but it is not really enough.

I then moved to Stager Silver Solids - which has a very tight twisted pair (no shield) architecture - which were much more detailed and the tight twisting combats RFI/EMI and induction from the signal to the neutral, resulting in a blacker background and quieter operation.

Then I tried a braided architecture, where the two conductors were braided with thick single strand nylon. This separated the two conductors and increased the angle at which they crossed, reducing RFI/EMI and induced noise. These were significantly better than the Stagers across the board and I actually used the conductors from the stagers to construct them - so the materials used were identical.

I then started playing with my own Spiral designs where the neutral is wound around the signal conductor
- Winding the neutral around the signal effectively places the neutral conductor at close to right angles to the signal conductor which minimizes induced noise.

I have since tried several variants of this design, with the latest working extremely well.
- Basically, the signal is a single strand of solid silver wire
- The neutral is four twisted pairs of CAT6 wound around the signal.
- One wire of each twisted pair is cut short and remains unconnected at one end and basically acts like a floating shield and interferes with induced EMI/RFI.

The signal and neutral conductors are different lengths and different materials - but it does not matter, because when you take a look at the roles each conductor actually performs from the perspective of an actual circuit diagram you will see that the signal conductor is the only one that carries the "music" - the neutral conductor actually only maintains a connection between the neutral sides (i.e. ZERO volts) of the connected components. OK - it does also completes the circuit, but it is very important that the neutral side is kept as close as possible to zero volts for each component to perform to it's optimum.

Friends have also tried the spiral design and reported significant improvements in SQ.

Take a look at these links for a more complete explanation...
http://www.image99.net/blog/files/category-cable-architecture.html

http://www.image99.net/blog/files/7aa60eba36da56b621505bf2e248d60a-1.html

A couple of companies that I know offer cables designed along similar lines are:
- Anticables (for IC's)
- KLE Innovations (for IC's and speaker cables)

I have also applied the same spiral design to power cables and the effect was outstanding with a vast improvement in dynamic performance, clarity, image size and performer placement.

I personally agree with Mitch2, so I have stopped concerning myself with crystal boundaries issues - I can't do anything about them anyway - except keep both cables connected in the same direction :-)

For me - selecting the right cable architecture has provided huge improvements in SQ and has elevated my systems performance way beyond its modest price point.

Regards...

Al wrote in response to the post by Jea48,

""09-28-15: Jea48
You guys that are using a digital coax cable with a solid core center conductor that connects your CD transport to your DAC, you should be able to hear a difference in SQ when reversing the direction of the digital cable.
Try it!"
I suspect the main reason that may occur in many systems is that the supposedly symmetrically designed digital cable is not truly symmetrical at the very high RF frequencies which comprise the risetimes and falltimes of the digital signal."

Unfortunately for that argument, interesting as it may be, is that many cable manufacturers mark their digital cables with arrows that are accorded the cables based on how the metal conductors come off the final die. All one need do is keep track of the conductor's orientation from the time it comes off the die until it's incorporated into the cable. So, it is the directionality of the cable that is responsible for the change in sound - just as shown by the Hi Fi Tuning data regarding directionality of fuses, I.e. Voltage drop across the wire is different depending on direction, for example.

Al,

The point I am trying to make, for what ever the reasons given, the directionality of a digital coax cable could/can make a difference in the SQ of an audio system.
Would you agree?

Jim (Jea48), yes I agree. My basic point is that in the case of digital cables, at least, one does not have to necessarily believe in the directionality of wire itself in order to recognize that the direction in which a symmetrically designed cable is connected can make a perceptible difference.

Best regards,
-- Al

The EM wave terminology is usually reserved for radiation.
09-29-15: Cbozdog

Wrong!

I can supply web links on the subject all day long but if you don't take the time to read them what's the use?

From the start my responses to you have been to try to convince you the signal that travels from a sending source to a receiving source is not traveling back and forth as it travels down the wire. The signal travels in one direction in the form of an electromagnetic wave from the source to the load.

I'm more curious about the effect of extrusion (that sounds like pulling the wire from the melt, or further purifying it through local melting and re-crystallization to push out insoluble impurities and minimize grain boundaries). How would THAT influence directionality?
09-29-15: Cbozdog

You need to search the archives here on Agon and AA. Start with posts of the late Robert Crump, RC Crump. He goes into great detail on what to listen for when wanting to check for the best direction for SQ of solid core wire. Note the dates of the posts and wire manufactured for that time.