Superconducting Voice coils (Split from Fast Bass)

[BassAwdyO]

14 guage wire, resitstance, meh. This is why I say all of us clowns ought to stop clowning around with copper and look toward superconductor. Sure you got to keep it cold, but that aint no thang. I dont think it would work so well in voicecoils, but interconnects should be no problem.

I'd like to see how these magnovox speakers work, if they really perform so well. 1930 is old bones!

[simon5]

It would be cheaper to use low gauge silver wire than superconductor

Use silver AWG 0 gauge, less than 0,1 ohms per 1000 feet.

[Bill Fitzpatrick]

Originally posted by BassAwdyO
I say all of us clowns ought to stop clowning around with copper and look toward superconductor.

That is not THE most ridiculous idea I've ever heard but it's certainly one of them. But, please do try it and let us all know how it worked out.

[BassAwdyO]

Theres no way superconductor could cost more than silver wire!

Superconductors are beginning to be used in a variety of applications such as, motors for submarines and ships, EMP bombs, Antennas, Computer processors, Power transmission lines, Fault limiters, Maglev, and a variety of other magnetic applications. What someone really ought to do is make a feild coil speaker using a superconductive magnet and have such mad flux that everything iron in the room flys to the subwoofer. I see no reason why superconductors would not have a future in the audio industry, and I predict their use will eventually be widespread. Now if someone thinks im crazy to think that I'd like to hear why

[Bill Fitzpatrick]

Originally posted by BassAwdyO
Now if someone thinks im crazy to think that I'd like to hear why

You really don't have a clue, do you?

[directservo]

Originally posted by Bill Fitzpatrick


You really don't have a clue, do you?

I think what BassAwdyO refered to is called high-temperature (?) superconductor. Every conductor has its own temperature point to become superconductor. Copper, for instance, may be around -200 degrees C. That is not realistic for practical use. The research on superconductor is to find materials that can become superconductor at temperature way higher than -200 degrees C. I don't follow them so I am not sure the state of the art (could be around -100 c now). The hope is that we can still benefit the reduction in resistance even at room temperature (we just neeed it to be low, it does not have to be zero). The materials are all composites. But the research is definitely there (for the days beyond fossil fuels).

Brian Ding
Rythmik Audio

[simon5]

Best material is HgBa2Ca2Cu2O8 with supraconductivity up to 153 K or -120,15°C. Still a long way to go, but this material is supraconductive in liquid azote, so quite "cheap".

[Bill Fitzpatrick]

Originally posted by simon5
Best material is HgBa2Ca2Cu2O8 with supraconductivity up to 153 K or -120,15°C. Still a long way to go, but this material is supraconductive in liquid azote, so quite "cheap".

Well, that's different. Nevermind.

[454Casull]

I believe they've got something that superconducts at -70 degrees Celsius, now.

But if the resistance of the voice coil is exactly 0, if we discount the inductance, how will we calculate damping factor?

[hummhoom]

The highest temperature superconductor is currently Hg0.8Tl0.2Ba2Ca2Cu3O8.33 at 138K. Most physicists believe that there will never be a superconductor above around 200K.

I was wondering myself how the damping factor would be calculated with a voice coil resistance of 0. The DC resistance might be zero, but the impedance still won't be.