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# What Electrical Property Governs Cable Design? - Page 3

Quote:
Originally Posted by castleofargh

I can't really find anything with real life exemples and values, and formulas often get too complicated for a dude who stopped school 15 years ago and math/physics even sooner ^_^.

all I can find talks about high freqs as in radio freqs, but nothing simple or really relevant to my eyes (meaning: that I can understand) in the audio range.

I was thinking about an increase in impedance from shielding like this:

signal in the cable generates magnetic fields that will create a signal in the the shielding material that will itself create back magnetic field that should in the end oppose voltage in the cable in some ways no? I don't know if this super inefficient transfert can matter at all, but as it depends on ... voltage?(I'm guessing it's voltage for magnetic field) ... the changes arent linear and might matter in some ways. I just have no idea about the values of such effect.

also what I really know nothing about is how the shielding material behaves on portable stuff (like IEM cable) where it's etheir not grounded at all, or linked to the circuit ground of the cable itself? I really don't know much about all this, but my little pinky told me proper shielding shouldn't be like that.

and about the cable with a few ohm, again from a very insecure memory, I believe the purpose was to make a little change in signature thanks to the weird impedance/freq caracteristics, to ease up on a given frequency range. I guess it was a situation not unlike the W4 where the signature is almost an exact opposite of the impedance graph and adding resistance tend to make the sound flatter(not taking damping into account).

Not happening. If anything the capacitance between the grounded shielding decreases impedance as the frequency increases due to capacitive reactance between the shield and the signal wires. Your theory about magnetic fields is just being over imaginative, this is not going to happen in an IEM or headphone cable. Though your little pinky is smart enough.

stupid science, I can never get creative. ^_^

the explanation is selfmade and far fetched I agree, but I really think I've seen something about impedance going up with shielding vs no shielding.

I will be working on a way of attaching my rig to the top of my head, and a way of connecting a 3.5 mm connector to a very short piece of ROMEX.  Might be a little cumbersome, but no sacrifice is too great to wring every last bit of sound out of my rig.

Quote:
Originally Posted by zombywoof

I will be working on a way of attaching my rig to the top of my head, and a way of connecting a 3.5 mm connector to a very short piece of ROMEX.  Might be a little cumbersome, but no sacrifice is too great to wring every last bit of sound out of my rig.

Hmmmmm...........not sure you have quite understood the jist of this thread.

Really?  Did that not come off as a satirical comment on the extreme silliness of some of these cable discussions (this thread excluded, of course)?

Quote:
Originally Posted by castleofargh

stupid science, I can never get creative. ^_^

the explanation is selfmade and far fetched I agree, but I really think I've seen something about impedance going up with shielding vs no shielding.

Ferrite beads are for suppressing higher frequencies and should not affect audio. Do you really want to hang a heavy ferrite bead on your headphone cable? And for what reason, you picking up radio stations?

Quote:
Originally Posted by zombywoof

Really?  Did that not come off as a satirical comment on the extreme silliness of some of these cable discussions (this thread excluded, of course)?

I don't know about you, but I wear an aluminum foil hat when I listen to music. I don't feel like streaming music to the NSA or Aliens. They can get their own accounts at Spotify or whatever service they prefer.

Quote:
Originally Posted by zombywoof

Really?  Did that not come off as a satirical comment on the extreme silliness of some of these cable discussions (this thread excluded, of course)?

No  I thought you were real! Now that's funny!

Quote:
Originally Posted by StanD

I don't know about you, but I wear an aluminum foil hat when I listen to music. I don't feel like streaming music to the NSA or Aliens. They can get their own accounts at Spotify or whatever service they prefer.

Wouldn't you be better protected with a material that has lower conductivity than aluminum. You wouldn't want the gov finding out that you are secretly listening to bootleg Justin Bieber concerts.

Quote:
Originally Posted by zombywoof

Wouldn't you be better protected with a material that has lower conductivity than aluminum. You wouldn't want the gov finding out that you are secretly listening to bootleg Justin Bieber concerts.

I couldn't find Mu-Metal foil. Maybe I should listen in a Faraday Cage so Bieber won't know about my infraction (listening to crap is an infraction) and send his lawyers after me.

zombywoof, here are two suggestions, one of which is a bit more practical:

a) a headphone with integrated DAC and amp ... no cables carrying the analog signal except for internal wiring

b) portable superconductor

I like b) better.

Quote:
Originally Posted by xnor

zombywoof, here are two suggestions, one of which is a bit more practical:

a) a headphone with integrated DAC and amp ... no cables carrying the analog signal except for internal wiring

b) portable superconductor

I like b) better.

Does the superconductor come with a train? Or is it the kind that comes with an orchestra?

Quote:
Originally Posted by xnor

zombywoof, here are two suggestions, one of which is a bit more practical:

a) a headphone with integrated DAC and amp ... no cables carrying the analog signal except for internal wiring

b) portable superconductor

I like b) better.

I am leaning toward b) as well because my rep would go way up due the presence of the liquid helium tank on my back.

It is amusing to think that there are likely to be some casual readers of this thread madly searching the web for a portable superconducting apparatus that they can use with their street rig to power their sextuplet driver, open back, super oral, platinum filigreed, 17 jewel, corinthian leather ensconced cans.  I enjoy this forum, and am glad to see that there are folks out there who are serious about listening to music, but still able to keep a sense of humor.

liquid nitrogen would certainly help for the hoverboard, so 1 tank 2 birds!

OK, so which one of you has figured out how to stream music from the future using a magnetic flux capacitor in their headphone cable? C'mon guys, cough it up.

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