10 Audio Cable Myths and Facts



In a sea of audio cable industry snake oil, we’re sure you’re wondering, What really matters when buying cables?Save your money by avoiding overpriced cables with outlandish claims. Below are some common myths to look out for and some important things to consider when buying audio cables.
 
CABLE MYTHS1. Conductor skin effect

In some applications like power transmission lines, an electric signal tends to travel through the surface of a conductor and avoids traveling through the center of the conductor. Many cable companies claim that their design limits the skin effect and measurably improves your sound.

The TruthWhile skin effect is a very real issue for large scale power transmission, audio signals are in such a low-frequency range that the skin effect is negligible at best. The skin effect is only an issue in high-frequency applications. 20kHz is the highest frequency that humans can hear. If we calculate the skin effect on a 12 AWG speaker cable like Gene from Audioholics does in this article, we find that the skin effect results in a loss of only -.014dB. Your speakers, room acoustics, and the human ear have a much larger effect on your sound than the skin effect.
2. Cable break-in

Don’t be fooled - any company that claims this thinks they can trick you into hearing better sound after a month or two. “Break-in” is a commonly used term throughout the industry. It is the idea that the dielectric of a cable changes and aligns itself to the electromagnetic field of the signal traveling through the conductors.

The Truth

There is no scientific evidence to support the idea of cable break-in, but there are still those who claim it improves sonic qualities. We’re not against optimism. We’re just not full of crap. Don’t drink the audio industry kool-aid and save your money for legitimate cables.
 

3. Cryogenic treatment

Cryogenic treatment is the process of freezing cables to -320 degrees Fahrenheit before use. The claim is that freezing the conductors of the cable at ultra low temperatures aligns the crystalline grain structure of them resulting in desirable improvements.

The Truth

Again there is no scientific data to support this notion. Cryogenic treatment can improve the durability of certain metals, usually steel, by stabilizing impurities. For example, the process is used to create strong tools or car parts.  

But, steel is a terrible metal to use for audio cables. It is one of the least conductive metals out there! Copper and silver are the best conductors of electricity and the preferred metals for audio cables.


4. Cable signal direction

You might hear this phrase tossed around quite a bit. It’s the notion that a cable has an established signal direction, the direction in which it was initially used, and that this signal direction should not be reversed.

The Truth

The reality is, assuming the connector ends and terminals are the same, the cable will work in both directions and the performance will be equivalent.

5. Cable elevators, risers, or lifts

 

The claim is that the cables’ magnetic field can interfere with the surface it is laying on. Essentially, the magnetic field can “reflect” from the surface back into the cable and cause distortions.

 

The Truth

There is no evidence to support these claims, and these unnecessary devices are merely for looks. They are in no way proven to improve cable performance.  

    CABLE FACTS1. Shielding is Important

    In the modern age, wireless signals are all around us all the time. The rapid growth and spread of technology means that these wireless signals will become more widespread and more likely to cause unwanted interference. Cellphones, wifi, and Bluetooth signals can enter your cables, but shielding can block these signals and preserve your sound quality.

    2. Length is a Factor

    No matter how well a cable is designed, cable length will always impact performance. As the length of a cable goes up, so does the risk of unwanted interference and signal loss. We always recommend keeping your cables as short as possible, but we understand that is not always possible. A well constructed and shielded cable will help combat this issue.

      3. Conductor material plays a role

      The best conductors to use for audio cables are pure silver or pure copper. Both are valued for their high conductivity, but copper is more widely used due to the high price of silver. Additionally, some variations are constructed with silver-plated copper. However, because the metals have different conductivities, the sound is more likely to travel through only the silver plating and not the copper.

      The purity of the conductor will affect performance more than anything. Look for Oxygen-Free High Conductivity (OFHC) conductors. This means that a significant percentage of oxygen and other impurities have been removed from the conductor resulting in high purity.  

      4. Wire gauge should not be overlooked

      The amount of wattage your system is using will determine the total gauge size needed for safe and optimal performance. The standard is 14 gauge wire minimum for the transmission of 250 watts of power. Many electronic devices use much less than this, but some speakers and listening setups may be using more. If your system uses more than 250 Watts, we recommend a higher total gauge cable.

      5. Quality connectors matter

      Truly, the best connectors are no connectors at all. But, if you can’t hardwire your system, gold plated connectors are the industry standard. Gold plating exhibits great corrosion resistance when exposed to oxygen and has good conductive properties. Connectors range from basic to extremely high end and flashy.

      The bottom line is:
      Choose connectors based on your personal needs and the type of connection being made. Overall, always choose quality connectors.  

      We hope these myths and facts will help you choose quality, reasonably priced cables to complete your listening room, studio, or whatever your setup may be.

      Share your setup with us in the comments below!

      128x128shieldedaudio

      steakster
      993 posts04-06-2020 10:17am

      This esteemed professor totally missed the fourth scale of intelligence.
      "One who understands that he doesn’t know what is yet to be known."

      His arrogance leads him to believe that science has already discovered and explained everything. What nitwit! 😎


      Ditto, 25 years of teaching, yet can’t practice what they preach, LEARNING. Sounds rather dense to me..


      This thread is the epitome of youth, and those who didn’t take care of their ears, during youth, both synonymous. Those whom were born with less than perfect hearing. My hats off to you. I have family that were born deaf.
      But for those that refuse to LISTEN have adequate, good, or excellent hearing. What can I say, other than TEST yourself.
      and "To thine own self be true" and OTHERS, let me add.

      Psychoacoustics is VERY real, to prove OR disprove.
      That’s the part naysayers forget. "disprove".
      Being an old mechanic, you just have to know when to say "UNCLE".

      It’s ok to be wrong, or not know, To insist that everyone else be ignorant and or wrong as well, that is the issue, with folk like me. You can’t, so I can’t either...Crack me up. Eye for an Eye thing...

      The OP and those that agree, I hope your endeavor leads to a sound that YOU like, can enjoy, tap your foot to, GET up and dance, set down and sing along, or just turn it up. To you, ALL the good things that music does for me. Unfortunately I’m pretty sure I’d be looking for SHIP listening to some of these setups...
      Headphones turned ALL the way up..Wondering why you can’t tell the difference. The only thing left after your ears are blistered, is VOLUME...keep doing that and you won’t get that, volume. FACT, not MO. Only thing that goes on my ears are muffs or plugs..Not that earbuds, or headphones don’t have a place.

      I agree many folks just can’t hear..Keep making BIG fat bass cables, and itsy bitsy, RCA made with recycled soda cans. Works..... kinda..

      Respectfully and with regard
      I like to detail cars and am able to inspect paint at a much higher level than most.  It’s actually difficult to point out to others what I see, but more importantly, what I’m looking at with regards to the reflections in paint.  Same is true with Audio.
      Your stereo set up will never get better if you deal in absolutes and have a closed mind.


      Great example. There's a lot of things like this where ordinary people who simply care enough are able to develop skills that far outpace the ability of scientists and engineers to explain let alone match. Mercedes has spent hundreds of millions on some damn fine engineering and computers and sensors yet they still rely on Lewis Hamilton to tell them what the car is really doing.

      This is what I meant by my comment that these people are barking up the wrong tree. They are so backwards bone-headed its almost impossible to comprehend. Science and technology, double-blind and all that, we use these things to understand the human experience. Not to tell the human he didn't have an experience. They have it so backwards its inside out upside down AND backwards!

      That's not to say humans are infallible. When my 911 was painted after a ding I told the shop owner the color was off. He was all no look its perfect. We mixed the paint perfectly. What pigments did you use? Standard ones. Not the German? No standard ones. Well of course its not gonna be right. It measures right. Arrgh!

      Week later I drive up park the car owner comes out looks at it says sheepishly well now in this light I can see what you mean. Ha!

      Human beings who care. Blow away the meters every time. All day long.
      jet88
      Wow, some scary stuff in here. People believing a copper wire has a direction

      Not to take one side or the other, but not all cables are said to be directional. Some manufacturers claim that their cables are ’designed’ to be directional but that claim usually has absolutely NOTHING to do with the conductors themselves. Without wasting my time looking for the exact answer, I believe it has something to do with the ground or the shielding design. Wireworld, however,  does make a claim regarding the grain structure of their conductors which is a result of the manner in which their conductor metals are drawn which doesn't sound totally unbelievable.

      As a 20 year beta tester for various cables of GroverHuffman.com, he has a patented air dielectric with a combination of techniques which may not be scientifically proven but audibly proven at various shows and in our comparison to other expensive cables.  He embosses the finer copper and silver elements in his cabling.  He uses both silver and copper wire.  He doesn't orient the cable but believes the wire is oriented upon usage.  There are multiple levels of elimination of noise, particularly the sleeve which is dipped in a mixture of copper, nickel and tungsten powered glue and a braided copper mesh over that.   His phono cables have very low capacitance.  Anyway, there were many failed models of wire back in the 2000-2006 period when he used all silver or all copper wire.  The mixture varies per quality/price of his cabling and per application (A/C, IC, speaker, etc).  There is also an additional non-patented process he uses which is the reason his cables compete with SOTA cabling but at relatively inexpensive cost.
      @wyoboy , my remark was aimed at the naysayers of the op.   I essentially agree with what the op stated.