|Originally posted by sholei
does this apply just for XLR interconnects? I know that XLR can run very long without any signal drop.
How about RCA interconnect and speaker cables.
Sheesh, I'm surprised you guys missed this.
There is much more to interconnects than phase shifts and propogation delays. One could argue that phase shifts and propogation delays are minor order effects and noise rejection and preservation of signal strength are the major order effects.
From this standpoint XLR interconnects are vastly superior than RCA. Not because the cabling itself is so much more superior but because RCA interconnects use single-ended drivers vs the differential drivers for XLR connections. Differential drivers have much improved signal to noise ratio and can be driven over much longer distances. Differential drivers also provide a much higher gain (something like 6 db over RCA).
I personally would consider running only XLR interconnects over distances greater than 10 feet or so.
One other minor point, the propogation speed of Electromagnetic waves is the speed of light only in a vacuum. For a copper cable, it's still very very fast though...