Active shielding...it's a combination of a couple things. The original shield still acts as the return...then a second floating shield is added. The active portion is sending a small amount of electricity through the shield to enhance common mode. When I originally played with this design years ago we were looking at grounding the main shield in the rca to the chassis ground. This worked great in analog coaxial cables and Nordost style interconnects, but sounded like **** when we tried it with twisted and braided designs. Adding the second shield fixed the problem. It was Synergistic who came up with the idea to flood the floating shield with ac instead of my grounding idea. They felt that not everyone actually used or knew how to use an isolated earth ground to properly filter the audio system.
This topic brought back memories...
This topic brought back memories...