Moving to a smaller gauge power cord is not where I would have guessed the responses to your original question would have led. Let us know how it works out for you.
Serious Question About Silver vs Copper Conductivity for Power
Yes, I realize that this topic is going to bring out the sharks, but if I get at least one serious response, it will all be worth it.
I understand that silver conducts 7% faster than copper. I also understand that using a dielectric insulation like Teflon is best at keeping the wire from overheating, stopping signals entering and stopping signals from leaving the conductor. I understand that a certain amount of math is involved in selected gauge of wire depending largely on how much power the component is going to take, and how much the amperage is (20 or 15).
My question is regarding certain features applied to either silver or copper conductors that may or may not have an advantage over one or the other.
I have the Kimber Kable P14 Palladian. This uses 14awg copper conductors insulated in Teflon. Then it adds a massive filter that attempts to mitigate the standing wave ratio to as close to 1:1 as possible. I had Kimber’s Ascent power cable prior. It’s identical to the Palladian, except the filter. I have heard the difference between using those two cables. Apparently, mitigating the standing wave ratio lowers the noise floor significantly. However, any filter that chokes the signal and will slow the electrical current.
As I understand it, the amplifier works by opening the rectifier to allow the capacitors to fill with energy that the system will draw from. Being able to keep the rectifier open and fill the capacitors as fast as possible, reducing lag time, has the effect of creating more realistic and detailed sound.
With that said, changing to a power cable that uses pure silver insulated in Teflon, will ensure that power is delivered potentially faster. Although, the silver power cable will NOT have a filter. Therefore the standing wave ratio will not be mitigated and the electrical signal will not be choked either.
So, would the amplifier benefit from faster electrical current or slower, but cleaner electric current? Since this signal isn’t directly applied to sound, the concepts of “colder” or “warmer” sound should not apply.
Can someone help me out without poking fun at the question? Additionally, I am not interested in having a cable-theory debate. If you don’t believe cables make any difference, I will not debate or have discourse on that topic.
@guakus said:
That’s a horse of a different color than this statement.
Maximum ampacity for 20awg copper wire = 1.5A (Power transmission line) 150W / 120V = 1.25A
Fire if you connect it to a bigger load than the wire is rated for...
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@realworldaudio |
@grannyring |
@gareents "However, that does not obviate the science of conveying electrical current, something which you seem to want to ignore" |
I have the direct answer to your question. I have replaced the Kimber Palladian PK10 (an early version) with my DIY silver power cord, feeding my DAC. For the change to be an upgrade you need to keep these in mind: 1. keep the total AWG the same or heavier. If you go lighter on the total AWG, then you will loose bass, energy and weight (whether on your amp or DAC, phono.) And yes, even though a DAC or a phono stage draws hardly any current, they still benefit greatly from a very heavy AWG power cord. That's because they will be able to draw instanteneous current, and while this current is little, it will come without resistance. 2. The shorter the silver, the better. 3. Avoid lengths of 0.5m, 1m, 2m, 4m. The 0.5,1,2,4,8m series is the perfect antenna to pick up the worst EMI/RFI offenders. Use in between values such as 0.3m, 0.7m, 1.3m, 1.6m, 3m,.... 3. The thinner the silver, the better. Try to use AWG30 or thinner. (Yeah, you will need on the order of 100-200 wires per hot / neutral to get the heavy AWG for a power cord!) Use soft anneal silver. If possible, "DEAD SOFT" 3N silver. The dead soft is more important than being 4N or 5N. 4. You also MAY use heavier AWG silver strands, and even sterling silver (only 92.5% silver content), provided that the wire was drawn 50 years ago (or earlier), and the metal had time to recover from the stress of drawing. I have used 70y old AWG19 sterling silver for my power cord (with total AWG10 for each conductor - hot and neutral, no earth ground), about 12in long. (DAC right next to the outlet.) The wires are run inside PTFE tubing, and the two tubes carrying hot and neutral are not running together, but away from each other. You want air to be the dielectric, as air is the best. The teflon tube only touches a piece of the outermost wires. 5. Burn-in: at the beginning of silver burn-in you will notice that high frequencies go up 6-10dB in level. Then it will stabilize, yet feels as if the volume knob is 4-6dB higher than before (well, in my case, compared to the PK10!!!) Now, it's quite crazy considering I'm talking about a DAC with a fixed output. Yet, that was my observation. It will get through this phase in a few days. Resist the temptation to change your crossover, as the tonal balance will stabilize. The power cord change made my DAC sound WAY, WAY more analogue-like, alive, fleshed-out and balanced. The change was literally a paradigm shift. Low resolution mp3 files have lost their digital feel, they sound almost analogue like. Although with less detail level than a high-rez file, but good enough that I feel zero urge to go for higher res versions. Even YouTube / Netflix sound is absolutely engaging. I'm sure I will get tons of harassment for this post. Fair warning: I'm not gonna be able to engage in lengthy debates - lack of time. If you are intrigued or curious, then try it out and report back. Cheers, Janos
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@guakus - No, I actually agree that power cords can make a difference in sound quality. They certainly have in my experience. However, that does not obviate the science of conveying electrical current, something which you seem to want to ignore. |
@frankmc195 there are also silver wires with insulation other than teflon. Coincidentally I have these en route for ICs. And there are also copper wires with with insulation other than PVC and teflon, specifically with a lower dielectric constant. And there are wires in silver with the Linz geometry, which are used when one wants lower inductance, like for a phono lead. table 7.1 here: https://www.engineeringenotes.com/metallurgy/metal-conductivity/conductivity-of-metals-metallurgy/41956 Says:
And in a power cord the frequency is low by definition, so more of “the whole wire” is carrying the current. That current gradually moves towards the surface as the frequency increases. |
I am not responsible for emotional feelings, and you are reading in shame and belittling on your own. You started off saying that the silver is fast, and the teflon keeps it from burning… both statements are untrue. We do not know if a “faster cable” is better, but 60 Hz (120 Hz) is pretty slow. The way top make a cable faster is by lowering the inductance and/or the capacitance.
If you are going to buy the cable based upon emotion, then just buy the thing and be done. If you want to buy the cable based upon theory then it gets difficult as we need theories and metrics. The metrics for the cable did not appear to be provided, and the EE theories are not considered to be overly easy. The third way is to some up with an alternative hypothesis. This was offered previously, and namely it was , “the output only depends on the smoothness of the DC power supply.” Or we just by how it sounds, but that is covered in psychoacoustic theory. And it is laden with bias.
^Freer^, is probably a better word, than faster in that website quote…
Lastly; when people are trying to offer you help and solutions to your question, then accusing them of causing you offence is not helpful in adult conversation. Either explain where and how you were triggered so that they can work on their delivery, or try and read the post without inserting your own emotions. Have a good day sir. |
@guakus said:
100W / 120V = 0.83 amp. 1800W / 120V = 15 amps
Maximum ampacity for 20awg copper wire = 1.5A (Power transmission line) https://www.powerstream.com/Wire_Size.htm
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Agreed. Not a cable any cable company should be selling based on the safety issues clearly evident here. Not trying to be difficult here OP. Just not my nature. Rather, trying to nicely make it clear that this design is not safe or prudent in my opinion. I have built many, many cables over the years. |
@guakus ,
Are you building, making, fabricating, this cable? Teflon insulation should not be solely the insulation used to insulated power line conductors from one another. Example, insulate the hot conductor from the neutral conductor and safety equipment grounding conductor. You can use Teflon for each parallel run of the hot and the neutral paralleled conductors but you will need to use a rubber or equal covering over each paralleled group of conductors. As for the EGC, (Equipment Grounding Conductors), it's a safety ground. It does nothing for sound. Just use an insulated stranded copper conductor. As for the individual 28 gauge solid silver wires. For AC power, jmho, that is too small. I would think the wire gauge would have to be at least 16awg.... Maybe 18awg. Here is a Web Link to a wire combination calculator. https://www.wirebarn.com/Combined-Wire-Gauge-Calculator_ep_42.html Note: 7 , 28awg conductors in parallel only equals 20awg. 7~ 18awg = 10awg 5~ 18awg = 11awg. |
@serjio |
@grannyring |
What is the length of the wire (material any) has a power cable? - and now try to dismantle any unnecessary medium-sized transformer ... it will be many MILES! Do you get the idea? - if you need a more pronounced effect - try different transformers ... Moving on... Your car runs on gasoline; You say - gunpowder burns better and faster - I will fill the car with gunpowder))) The same situation with music - it will sound best if the electrical conditions in your house are as close as possible to the conditions of the studio where the recording was made ... any deviations (faster - slower) will spoil everything ... |
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If you must do this, and it is fun to DIY, then consider these tips. Solder the proper sized spades to each leg so the plugs clamp down on the spade. Don’t simply clamp down on the bare wires as these thin silver strands will easily be compromised. The plug clamps will cut into the wire and easily compromise the connection, sound and safety. Use pure silver spades if you like. Crimp or crimp and solder if you like. Just be sure and use spades. Reconsider using an outer jacket for safety. |
@grannyring |
I would not build your power cable with these 28 gauge, solid silver conductors. The combined gauge per leg is only 20. Not enough! Also, using solid core this thin will be prone to break over time and handling. Not safe. I would also place in a proper outer jacket for safety in the event of a break or Teflon breach for safety. Lastly, the sound will lack weight, body and bass. It just will. Not a good idea for all of these reasons in my estimation. Food for thought. |
@czarivey |
@guakus You've answered wrong question. I wasn't contesting whether there's or there is no difference when you upgrade the power. I was mentioning that non-conducting materials in power cords are far more important while silver or copper absolutely make no difference. |
@jea48 Thank you sir! Finally, a reasonable response. If there was an award, you win it. :) |
@guakus , I don’t know if a difference in sound can be heard, from say a power amp, whether the conductors of a power cord are copper or silver. (Interconnects and speaker cables, are a different story.) Things that can make a difference in a power cord: The wire gauge used for the conductors. Solid core or stranded wire conductors. Geometry, how the cable is made. Shielding.... Can be good and can be bad. Depends on the application, the equipment it is used to feed. The type and quality of the connectors used.
As for the speed of current through a conductor, in a circuit. It’s travel is very slow. As slow as molasses.
You may find these exchanges of some interest.
Circuit wire gauge size matters. . |
@czarivey |
@vonhelmholtz
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One side listens and compares and the other decides based on their understanding of science, but the scientific method involves testing your hypothesis and based on results you refine your hypothesis. Sure there are snake oil salesmen and some unwarranted prices, but there is a huge chasm between cable design doesn't make a difference and it always makes a difference. I've spent a lot of money on cables and power. I only keep what I perceive as making a difference. Call me an idiot, but that gets us nowhere and you have to ask yourself when calling me an idiot, how was I smart enough to earn the money to pay for the cables. I guess that next, you will say that I'm privileged, or a thief. I propose that rather than go to this extreme, listen to a really good system and then put in your zip cord and listen again
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@gareents |
@holmz +2 |
Conductivity goes gold, silver, copper, aluminum.... solid cable is not necessary because electricity travels on the outside and not throughout a wire... if it is silver coated that should be enough. The only thing I can say is I use silver coated wires and it seems better... but that is my impression. |
@holmz pretty much summed up the problems with this post. I'll also say that I'd pay extra for interconnects without some "filter". |
@holmz
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yes i believe the first reply by @cleeds nails it |
Correct, but you said that Silver conducts 7% faster than copper.
And also that the teflon keeps it from overheating. Both those statements are erroneous.
It is also a fact that Silver is touted as having magical qualities by many manufacturers that sell it. Gold is actually 3rd behind silver and then copper in conductivity, but it also has a magical allure.
it is not your lack of knowledge that is the problem, it is that much of this gear is marketed with magical properties and stories which are laden in golden eared testimonials. Some/most cables do not even list the specs! At least Kimber provides some specs for the speaker cables (4TC and 13TC at least), so they are up the list a ways in comparison. Without some provable facts it is difficult to understand whether they work or what they do. I would usually prefer to put the funds into a piece of gear that is more immune to needing a cable in the first place. Without that we are left with listening tests, and experience.
Ask your EE friend if he could measure the voltage of the power supply output. If so, then he would then have a way to show whether or not it was dropping down and a “faster cable” might help fill it better. if the power supply output is rock solid, then I cannot imagine any way that a cable could help… but more noise would be worse. |
@gs5556 |
+ and going from 14 ga to 12 ga is much less resistance than a 6% boost in going to silver from copper - in terms of conductivity.
And back to the earlier physics… Does that make a difference? Probably not… but a copper wire with no insulator is faster than a copper wire with teflon and/or a silver wire with a teflon jacket. |
@holmz Palladian looks significantly different than other high-end power cables. That's because of its breakthrough technology resulting from thousands of hours of research at Kimber's well-equipped laboratory. Kimber's engineers developed a special SWR (standing wave ratio) enhancement technology, which dampens electrical standing wave reflections. This proprietary technology has permitted the creation of an AC power cable of unmatched clarity, silence and freedom from grain." There is no article for how the rectifier and capacitor system worked because that was a discussion I had with technical support at Shunyata Research about their equipment and cables. |
@mitch2 |
The power cord does not have any effect on the filter capacitor charging time. The filter cap discharges when the rectifier output falls to zero and charges when the voltage from the rectifier exceeds the voltage on the capacitor. The charge time depends only on the power supply load resistance multiplied by the capacitance (RC time constant). For a cap to charge faster, the capacitance must be larger, and a larger capacitance results in a higher current draw. This higher current is sourced from the transformer secondary, which must have a high enough VA rating to meet the speaker load demand. As long as the voltage from the wall receptacle isn't reduced, the amplifier will preform to spec. A larger gage power cord will lessen any voltage drop more so than if it's copper or silver. You will need a power cord length of a 1,000 feet to see only a 1-ohm difference in resistance from copper to silver. I'm not going to dive into whether one sounds better than the other, but from a physics point of view a six foot silver or copper pc the same gage has no electrical differences at 120 volts at 60 hz. |
If the 8 awg Shunyata Alpha power cable sounds so good, why not just stay with that cable? I wouldn’t have thought larger conductors should make a difference for the size amp in those speakers but if the larger gauge cord sounds better then use it. I also wouldn’t expect using silver wire should make a tangible sonic improvement over using copper wire, but you can certainly listen and choose what sounds best to you. |
Speed of conduction is not what is happening. There is not some magic with silver that makes it “faster”, but silver and copper is make of neutrons, protons and electrons… and the # of protons is what defines silver as unique. The electron movement is what carries the current in the wire.
The Teflon’s keeps the live and neutral from arcing. The teflon also keeps the ting from arcing into one’s hand when touching the wire.
The teflon does nothing for isolating the conductor that way.
The US 60 Hz is already pulsing at 120 Hz through the rectifier. So one is not able to do any “filling up of the capacitors” for some amount of time, which happens at 120 Hz.
If one were to show that the output power was higher with one cable versus the other, then we could be onto something. I did not see anything on the Kimber site explains the cable… no standing wave ratio or anything else.
Not in reality it won’t be any faster.
Since there is unlikely to be any “Faster” happening, then cleaner would be potentially better. But that assumes that the amp is not filtering out any noise. and we do not know what the “fat part” of the cable is, nor what it is doing. It looks good though.
At some point, understanding how cables work from a theory perspective is worthwhile. If we are only going to go by belief in cables, then it is only a place where we can have testimony and debate. Personally I would prefer to stick to facts. Your perspectives on how electrical current flows, and the speed of the flow is contrary to electrical theory. That coupled with not knowing what the ”filter” is, nor its parameters makes it a crap shoot as to what is happening. I suppose one could use an oscilloscope and maybe 119 Hz and 1kHz and look for some low frequency IMD happening to the 1 kHz tone? Or clipping on the 119 Hz, as it is sliding past the incoming 120 Hz? But without that, it is sort of more along the lines of a story, which is heading towards fiction. If there was a shield over the cable, it may not do anything, but it would have a basis in fact. Also if the “fat part” of the cable was some capacitor shutting high freq noise, then that would be factual and could reduce noise coming out of the amp… but that gets smaller and small on high quality amps that are fingering out noise.
One cannot chuck out erroneous statements on how cables work as the premise for changing a cable, and expect that some discussion on theory would be out of place. |
Other than component choice, my main improvement to my system came via the Shunyata Everest 8000 power conditioner and Alpha / Alpha NR PCs. I went with Venom NR for subs. I think the Noise Reduction coming out of the Everest was important and the Everest’s ability to momentarily provide 30 Amps x 6 circuits doesn’t hurt. So, clean power that can provide momentary power surges seems to really step things up. Next, I’m increasing the gauge of my speaker cable, but still staying copper.. will be using the AQ William Tell Zero full range. I'm still on a 15 amp non dedicated circuit. |
@mitch2 |
@deadhead1000 |
A wire would heat up when too much current runs through too small of a wire. Your 14 awg copper Kimber Kable P14 Palladian power cord should be just fine for the 50W rms power amplifiers inside of your Audioengine HD6 Wireless Speakers. Unless there is a problem you are trying to solve, I cannot imagine a change in your power cord making a sonically noticeable improvement for your situation. Save your money for booze and enjoy the music. |
@cleeds |