Spatialking,
Not sure if I completely agree with the power cord acting as an RF antenna. Once energized, it has more rejection qualities, and is more susceptible to large electro-magnetic field influences. Even placing two energized cords along side each other, will have little or no effect on the other's audio component. The newer switching class-D amps can inject adequate hi-freq noise into close-proximity sensitive interconnect cabling and component gain stages (even through some cable shielding and metal chassis), but would be hard pressed to have an audible affect when placed several yards up stream, along side another amp's un-shielded PC (via an extention cord for testing purposes). Oh, and can't forget about all the non-shielded Romex behind the sheetrock walls. Mainly what people hear from two-way radio communication, is affecting radio/television receivers or inadequately shielded sensitive components and IC cabling. That's the only time I've ever heard anything during audio playback, and I live next to a private air park where communication takes place throughout the day. I'm open to explanation, though.
Reb1208,
Regarding conductor materials... copper, silver, or gold are capable of frequencies into the extreme RF bandwidth. The audio bandwidth is child's-play in comparison. Copper is utilized everywhere in these applications. Capacitance, impedance, and shielding are the main issues affecting an interconnect's frequency/performance, as they do with RF cabling or wave-guides.
Not real sure how or why you're having issues with shielded cords creating coloration. Any further explanation to help us understand what might be contributing to your findings?
Not sure if I completely agree with the power cord acting as an RF antenna. Once energized, it has more rejection qualities, and is more susceptible to large electro-magnetic field influences. Even placing two energized cords along side each other, will have little or no effect on the other's audio component. The newer switching class-D amps can inject adequate hi-freq noise into close-proximity sensitive interconnect cabling and component gain stages (even through some cable shielding and metal chassis), but would be hard pressed to have an audible affect when placed several yards up stream, along side another amp's un-shielded PC (via an extention cord for testing purposes). Oh, and can't forget about all the non-shielded Romex behind the sheetrock walls. Mainly what people hear from two-way radio communication, is affecting radio/television receivers or inadequately shielded sensitive components and IC cabling. That's the only time I've ever heard anything during audio playback, and I live next to a private air park where communication takes place throughout the day. I'm open to explanation, though.
Reb1208,
Regarding conductor materials... copper, silver, or gold are capable of frequencies into the extreme RF bandwidth. The audio bandwidth is child's-play in comparison. Copper is utilized everywhere in these applications. Capacitance, impedance, and shielding are the main issues affecting an interconnect's frequency/performance, as they do with RF cabling or wave-guides.
Not real sure how or why you're having issues with shielded cords creating coloration. Any further explanation to help us understand what might be contributing to your findings?