Quote Originally Posted by jneutron
I'm rollin on the ground...my sides are hurtin...

For meters of wire, it's a simple thing to calculate the frequency dependence of the wave velocity..so it's really easy to figure how much distortion can happen..

Worst possible case calculation for audio: dielectric ratio of 100 to 1 (which is waaaaay too high a ratio)

Fastest audio signal: say, 95% SOL...(speed of light)

Slowest: what, 5%? 10%??
Time of arrival difference in an audio system? who knows, who cares...5% is 15 million meters per second, one microsecond for 15 meters. I don't think audio cares...

Cheers, John
Stephen H. Lampen of Belden has a book out, "Wire, Cable, and Fiber Optics for Video & Audio Engineers," McGraw Hill, 1997.

Here are some DC:

rubber 3-6
EPDM 2.5-6
PVC 3.5-5.5 Vp 45%-57%
teflon 2.1 Vp 69%
polye 2.3
polyp 2.23 Vp 67%

Time delay in cables, as some manufacturers prefer, is measured in nanoseconds/ft.

Vp(Velocity of propagation) = 100/sqrt of DC

Now it is easy to calculate propagation in these cables, close to 1ft/nsec.