IC Cable resistance??

[jakelm]

Just built my first set of IC cables, using RG59 coaxial. A couple of snags, you can read my last port here:

http://www.polkaudio.com/forums/showthread.php?p=811565#post811565

Question: In checking the resistance of the cables, I noticed they are .1 - .2 ohms. For a 6' cable is this normal? Also, how much resistance should be accepted in cables?


Better cables, lower resistance?? Is that how it works?




Jake

[Sami]

If you have a spectrum analyzer, I would measure power loss across the frequency span. To me, resistance is far more important in speaker cables than in IC's so don't worry about it too much. Inductance and capacitance might be more important figures but I'm not an expert on the issue so I can't comment any further.

[ShinAce]

The resistance is not important. The amplifier input will show a load on the order of 30k ohms.

Remember to test the resistance with the multimeter leads shorted. Very often, the meter will never get to 0. You might not even have measurable resistance.

Point is, you're wasting your breath. Get back to listening.

[jakelm]

30k ohms, minus .2 ohms for cable, I didnt realize itht e resistance was that high to begin with and I can also see how that will not effect audio.

The new cables are great, not quite as flexible as I would like, but I think I came out ahead by building it myself, at a low price. And it was fun... Took my mind off of alot that is going on. Its real medicine. Very therapeutic.

Thanks guys.

Back to listening....

[zingo]

The capacitance is the important part like previously mentioned. Nice job on the interconnect building and it is very therapeutic. It's great when you build a pair and they end up sounding better anything you currently own, and costs pennies in comparison.

[jakelm]

Capacitance, in a RG59 coaxial cable, should be no problem. I have no way to measure.

Ah well. It be what it be...

[ShinAce]

You do not need to measure the capacitance, it can be looked up. Capacitance on RG59 is around 22 pF per foot. So you are looking at maybe 150 pF. Still good to go.