Quote Originally Posted by E-Stat
The cords I refer to all have filter networks and use multiple shielding strategies. They're not just wire n' plugs as you seem to assume. The CDPs in my systems (a significant source of RF) are all located very close to the amplification. I also use a range of conditioners that are all passive in nature.

rw
...IMHO the whole thing is residus de taureaux!

If your CDPs are a significant source of RFI, it isn't simply the power cords...the units themselves radiate this stuff, just like PCs(personal computers that is) and nearly every electrical processor-driven device...If I were to "scan" any such device with an inductive, amplified probe and suitable test transducer, I would "hear" predominantly 60Hz AC at the cord and the lower artifacts of higher freq digital hash depending of the area of the device being probed. Of course the limits to be heard would be below 20k...anything above it goes into ultrasonics...so attempting to filter out anything above 60Hz via a line cord doesn't quite do it...same with ICs, filtering anything above 20kHz won't stop it...it's the devices proximity to the amplifier that accounts for any RFI or RFI induced sonic abnormalities.

If you ever heard inductive noise, realized the level amplification required to make it an audible problem and took into account the frequencies that actually comprise the realm of RFI, it would be obvious how much of a non-issue it is in actual practice when applied to our little slice of the frequency pie.

Even if your cords and cables incorporate specific band-pass filters, it's like closing a window on a house with no roof.

jimHJJ(...and that analogy you cited earlier?...I'm not quite sure it holds water...)