janneman said:
Well, not really. Suppose your cable has R = .2 ohms, and you want to keep the power wasted in the cable < 1 Watt. That means you can shoot 2.3 Amps RMS, continuous, through the cable. That would be 40 Watts in an 8 ohms speaker, continuous. And the cable wouldn't even be lukewarm. So, dissipation isn't an issue.
Jan Didden
ah.... I figured it was significantly less conductive than copper
Audiophilenoob said:
ah.... I figured it was significantly less conductive than copper
Yes it is, I just guessed that an alu cable would be .2 ohms. You know, it isn't really an insulator. Let me check this.
SPECIFIC RESISTANCE AT 20 DEGREES CELSIUS
Material Element/Alloy (ohm-cmil/ft) (microohm-cm)
===============================================================
Nichrome ------ Alloy --------------- 675 ----------- 112.2
Nichrome V ---- Alloy --------------- 650 ----------- 108.1
Manganin ------ Alloy --------------- 290 ----------- 48.21
Constantan ---- Alloy --------------- 272.97 -------- 45.38
Steel* -------- Alloy --------------- 100 ----------- 16.62
Platinum ----- Element -------------- 63.16 --------- 10.5
Iron --------- Element -------------- 57.81 --------- 9.61
Nickel ------- Element -------------- 41.69 --------- 6.93
Zinc --------- Element -------------- 35.49 --------- 5.90
Molybdenum --- Element -------------- 32.12 --------- 5.34
Tungsten ----- Element -------------- 31.76 --------- 5.28
Aluminum ----- Element -------------- 15.94 --------- 2.650
Gold --------- Element -------------- 13.32 --------- 2.214
Copper ------- Element -------------- 10.09 --------- 1.678
Silver ------- Element -------------- 9.546 --------- 1.587
* = Steel alloy at 99.5 percent iron, 0.5 percent carbon
So, alu has about 50% more resistance then copper, all dimensions equal.
Jan Didden
janneman said:
Yes it is, I just guessed that an alu cable would be .2 ohms. You know, it isn't really an insulator. Let me check this.
SPECIFIC RESISTANCE AT 20 DEGREES CELSIUS
Material Element/Alloy (ohm-cmil/ft) (microohm-cm)
===============================================================
Nichrome ------ Alloy --------------- 675 ----------- 112.2
Nichrome V ---- Alloy --------------- 650 ----------- 108.1
Manganin ------ Alloy --------------- 290 ----------- 48.21
Constantan ---- Alloy --------------- 272.97 -------- 45.38
Steel* -------- Alloy --------------- 100 ----------- 16.62
Platinum ----- Element -------------- 63.16 --------- 10.5
Iron --------- Element -------------- 57.81 --------- 9.61
Nickel ------- Element -------------- 41.69 --------- 6.93
Zinc --------- Element -------------- 35.49 --------- 5.90
Molybdenum --- Element -------------- 32.12 --------- 5.34
Tungsten ----- Element -------------- 31.76 --------- 5.28
Aluminum ----- Element -------------- 15.94 --------- 2.650
Gold --------- Element -------------- 13.32 --------- 2.214
Copper ------- Element -------------- 10.09 --------- 1.678
Silver ------- Element -------------- 9.546 --------- 1.587
* = Steel alloy at 99.5 percent iron, 0.5 percent carbon
So, alu has about 50% more resistance then copper, all dimensions equal.
Jan Didden
that would cause greater heat per given diameter than copper correct?
also that's funny that silver is only 2% superior in conductivity to copper.... $8/foot cables 😛 😛
Guys, aluminium was used over long distancies because it's much lighter than copper.
It's worse as a conductor, but it has other advantages.
Telephone companies used it.
My point in bringing this out was just to make my point: materials also make difference, they have a sonic signature.
Copper, silver, etc. in different levels of purity.
It's worse as a conductor, but it has other advantages.
Telephone companies used it.
My point in bringing this out was just to make my point: materials also make difference, they have a sonic signature.
Copper, silver, etc. in different levels of purity.
Yes aluminum would have "greater heat output" but how hot does your copper cable get?
certainly not:
Of course conductivity depends on your definition: Aluminum has MUCH greater conductivity per weight, less conductivity per wire guage...
Which wins in "greater conductivity per euro"?
certainly not:
very hot cause of resistance and would require far larger gauges
Of course conductivity depends on your definition: Aluminum has MUCH greater conductivity per weight, less conductivity per wire guage...
Which wins in "greater conductivity per euro"?
It's funny that you are all talking about aluminum wire as if it such an oddball choice. Aluminum wire is allowed in the Canadian Electrical Code and is starting to come back into some use, mostly for the big gauge stuff and not the 15 amp duplex circuits (yes, I know what a big disaster it was in the 70's, as I am part owner of such a home and have cursed many times when I have had to do electrical work on it). An inspector actually recommended it to me for my hot-tub or garage wiring, I can't remeber which.
http://www.halifax.ca/fire/inspection_wirebasics.html
http://www.halifax.ca/fire/inspection_wirebasics.html
Variac said:Yes aluminum would have "greater heat output" but how hot does your copper cable get?
certainly not:
Of course conductivity depends on your definition: Aluminum has MUCH greater conductivity per weight, less conductivity per wire guage...
Which wins in "greater conductivity per euro"?
gauge is what matters in audio
and copper is quite cheap here... I don't imagine that aluminum would be any cheaper... and surely not superior for audio
😕
carlosfm said:Guys, aluminium was used over long distancies because it's much lighter than copper.
It's worse as a conductor, but it has other advantages.
Telephone companies used it.
My point in bringing this out was just to make my point: materials also make difference, they have a sonic signature.
Copper, silver, etc. in different levels of purity.
can you hear the difference between a 10 foot long silver 24 gauge cable and a ofc 22 gauge cable??? I sure as heck can't...
Audiophilenoob said:gauge is what matters in audio
No, it's not.
Audiophilenoob said:and copper is quite cheap here... I don't imagine that aluminum would be any cheaper... and surely not superior for audio
It's not superior for audio.
I repeat: do materials make difference?
They do.
Do cables make difference?
They do.
Audiophilenoob said:can you hear the difference between a 10 foot long silver 24 gauge cable and a ofc 22 gauge cable??? I sure as heck can't...
You resume cable to gauge?
It can make difference.
It depends.
That silver cable can sound worse than that copper cable.
The point is: they can sound different, even with the same construction.
Cal Weldon said:and the wheels just keep going round and round...
Conversation shut down by a moderator.
Let's go to another place, then...
Ah Carlos,
Don't go away mad. It just seemed the content was beginning to wane. Keep up the good work. It's always interesting and entertaining when you're involved in a thread.
Cal
(big meany moderator)
Don't go away mad. It just seemed the content was beginning to wane. Keep up the good work. It's always interesting and entertaining when you're involved in a thread.
Cal
(big meany moderator)
Audiophilenoob said:I sure as heck can't...
Is that why you expect others not to hear the difference either?
Let's make this thread even more entertaining than it already is 😉
BTW, there were few threads on AA describing aluminum foil as better sounding in tweeter network as the copper foil.
Peter Daniel said:
Is that why you expect others not to hear the difference either?
Let's make this thread even more entertaining than it already is 😉
No actually... I asked if he could... and to provide some proof towards audiblity...
there's no science supporting an audible difference... so I wished for an explaination... otherwise it's obvious that he just "wished" to hear what he heard....
I never tried a blind test but it is something that I'm interested to see if others have....
for 99.9% of the people in this world... all you have to do is tell them that "this wire will add 3db to the midrange" and they would be like "WOW I REALLY CAN HERE THE INCREASE"...
there's no scientific proof that "capacitor A" using steel leads sounds different "than capacitor B" with copper leads etc... any such proof is purely subjective and more than likely influnenced by the fact that they probably paid $50 more for that copper one...
now... if someone tried 2 of the same amps with silver on one and copper wire on the other... and did a switch with totally random people... and people picked the silver wire as the better sounding one... >60% of the time... I might pay attention...
heck if I spent $200 on pure silver wires... you can BETTER believe that NO ONE would tell me they didn't make my stuff sound better... I would fight it to the death 😉 😉 😉
I mean ... HEY I just spent $200 on wires... it has to make a difference right 😉 😉 😉....
Cal Weldon said:
Cal
(big meany moderator)
Ahhh...😀
Audiophilenoob said:No actually... I asked if he could... and to provide some proof towards audiblity...
And why don't you provide proofs too?
If you can't hear it, doesn't mean others can't.
Or are we all equal?
You know, hearing music is a thing you also learn.
You need experience to detect some things.
I've seen people that couldn't notice a piano, and it was always there in the music.
As soon as you talk about it, everyone hears.

Audiophilenoob said:No actually... I asked if he could... and to provide some proof towards audiblity...
heck if I spent $200 on pure silver wires... you can BETTER believe that NO ONE would tell me they didn't make my stuff sound better... I would fight it to the death 😉 😉 😉
I mean ... HEY I just spent $200 on wires... it has to make a difference right 😉 😉 😉....
I spent much more than you did on things I didn't even need and they proved to be inferior to whatever I alredy had. But the money I spent was never justification for their performance.
Now, what kind of proof would you expect from Carlos to make yourself more comfortable about the whole wire thing?
carlosfm said:
Ahhh...😀
And why don't you provide proofs too?
If you can't hear it, doesn't mean others can't.
Or are we all equal?
You know, hearing music is a thing you also learn.
You need experience to detect some things.
I've seen people that couldn't notice a piano, and it was always there in the music.
As soon as you talk about it, everyone hears.![]()
or they all hear cause you told them "to hear" 😉
I can provide sufficent doubt based on the nature of audio and AC current... however... these have been stated maaaany times
wires will not change anything... except dropping voltages cause of resistance and that's about it...
interconnects are TOTALLY different... wires don't change anything...
it's like saying... my wall outlet isn't PURE ENOUGH AC so I need to replace all my home wires with silver wire.... it makes no sense... wire is wire is wire.... it all "sounds" the same unless something is very wrong with it (obscenely small gauge, esoteric material like uranium or something...)
Peter Daniel said:
I spent much more than you did on things I didn't even need and they proved to be inferior to whatever I alredy had. But the money I spent was never justification for their performance.
Now, what kind of proof would you expect from Carlos to make yourself more comfortable about the whole wire thing?
a blind test with controls would do... maybe 10 of his friends .... without carlos telling them anything about the test... jsut say "which one sounds better"
heck my curiousity is hightened so maybe I'll do it if he doesn't take it on...
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