Faraday cage - suppressing stray EM fields

Judit is correct, and the military and some high tech computer companies use the Faraday cage to protect against stray RF and EMI signals, particularly in sensitive testing situations.

To answer your question, yes the cage could work, especially around (say) a turntable where you wish to isolate the phono cartridge and tonearm wires from picking up CB radio, FM broadcasts and the like. As far as cable goes, many of the Belden and Canare cables do feature a foil and/or copper mesh that in fact acts as a shield for just such purposes. The Faraday cage is just a large version of this same idea.

In any case, the cage or shield must be properly grounded, so the signal will dissipate to earth, rather than continually dancing around the outside of the metal shield.

Dear Clueless. Third line of third paragraph.... when you differentiated magnetic flux with respect to time...that was probably the start of your headache..lol

Thanks for the explanation Judith. No headache.

I remain,

FWIW, i have my sweetspot chair enclosed in a faraday cage. i lower myself in with a system of pulleys and chains and then close the hatch behind me. it's hard to discern the advantages. but, i've not once been struck by lightening whilst listening to my kit. (threw that last bit in for our friends from the uk.) -cfb

Kelly, your either hallucinating again or playing on the "hollow deck" of the Starship Enterprise. Beam me up, Scotty... : ) Sean
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