My previous floor was Terrazzo, and it's design employed metal strips embedded in the stone as a decorative trim, separating it into large squares. Under this floor was a network of what looked like chicken wire. I assume it was nailed to the original sub structure to provide strength, much like rebar in a foundation pour.
I had a huge problem with a particular radio station getting into my phono. I tried literally everything. Ferrite shields, moving cables, swapping cables, attaching and removing every ground from every piece of equipment. Even running dedicated grounds for the stereo only.
I could pick up this station so clearly that I could make out announcements. Finally, in a test where I went under the house and attached a ground rod to the metal in the floor, the problem was totally eliminated!
I could literally turn the radio station on and off by removing and reattaching this single wire to my floor. No other ground in the system had this effect, nor could they eliminate the problem. This experience leads me to believe that a ground should be attached to ANY metal installed in the floor of a dream room, least it become a nightmare room like I had.
Your definition for a RF cage is probably more accurate than the application I just described, none the less this trick does the job. This should be applied to one's dream room regardless of the name used to describe it's ability to potentially clear RF signals from the music.
I had a huge problem with a particular radio station getting into my phono. I tried literally everything. Ferrite shields, moving cables, swapping cables, attaching and removing every ground from every piece of equipment. Even running dedicated grounds for the stereo only.
I could pick up this station so clearly that I could make out announcements. Finally, in a test where I went under the house and attached a ground rod to the metal in the floor, the problem was totally eliminated!
I could literally turn the radio station on and off by removing and reattaching this single wire to my floor. No other ground in the system had this effect, nor could they eliminate the problem. This experience leads me to believe that a ground should be attached to ANY metal installed in the floor of a dream room, least it become a nightmare room like I had.
Your definition for a RF cage is probably more accurate than the application I just described, none the less this trick does the job. This should be applied to one's dream room regardless of the name used to describe it's ability to potentially clear RF signals from the music.