Copper Sleeve over IEC

Ozzy, yep. It is an interesting concept of too much copper dulling the high frequencies. I really don't understand why a conductor with no ground would do anything.

Ozzy, double the copper, you know, 1/2" inside a 2" copper coupler with a foam film in between. I am using Alan Maher's Power Enhancer also, all are fine tuned for music.

I have a live sounding room so the high frequencies are just fine. I've been using copper as a shield since my Marantz days. Nice improvement on my HDTV too. Acts as a shield on any open unused inputs.

After installing a copper coupler over the IEC connector feeding my CDP I tested it with a simpler version of the tester used in the Marantz video. The meter registered as if the coupler weren't there. A bead of Blu-Tac substitute was holding the sleeve in place, so it was removed and the meter no longer registered. Adding several wraps of Teflon plumbers tape around the connector held it in place and allowed the sleeve to work its magic.

I don't claim to understand why, but can't ignore the empirical evidence and thought the results might be of interest. Thanks for the great tip.

Since I have found, along with others, that aluminum is a better shielding material that copper or steel, I would whether simple and cheap aluminum duct tape would be better and would, of course, be easily contoured to any plug. I doubt that it would do anything for Synergistic Research power cords that I use, so I won't be trying this.

Hey, this is a great idea! I'll have to give it a try.

Note if you ground the copper, it becomes a capacitor relative to the AC Mains. If you don't ground it, then it is a shorted turn. These are quite different entities: one is a capacitor and the other is a very lossy transformer. Neither will help pass AC power to the unit but both will have a significant impact on any RF riding along the power cord.

My vote goes for the shorted turn effect, as that is what I would expect to see the biggest improvement. But I can try both easily enough.