Faraday fabric absorbs EMI generated by a component
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| Posted on August 6, 2020 at 20:34:02 | ||
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Posts: 320
Joined: October 2, 2014 |
Bought a 44"x39" sheet of upgraded EMF-shielding Faraday fabric for $28 from Amazon (link below) with which to cover the wireless modem but the execution of that plan in summer led to overheating. After putting the failed project to one side for awhile, I applied a 3"x 0.5" strip to the bottom of each side of the CD tray wondering what, if any, effect that might have on sound quality. Then I ripped a CD and listened. Finding it difficult to believe the resulting transformation, I repeated the exercise with different recordings and genres of music. Unexpectedly these small 5-cent pieces of Faraday fabric must absorb the EMI generated nearby to reveal all the fine details of recordings otherwise hidden under a layer of hash and haze. The great advantage of Faraday fabric is that its use does not introduce the metallic tone of the more expensive and awkward-to-handle MuMetal to the music. However over-application with any component similarly makes the music sound fatiguing to the ear. Faraday fabric needs to be kept away from circuits but works well above/ below external rotating hard drives and LPSs. If you place it under a laptop, a slow application like Word will launch immediately - Novabench speed readings indicate that's attributable to faster disk access 'read-speed' times. So, after distancing wireless modems/ wireless phones/ AC adapters etcetera to address sources of externally-generated EMI, Faraday fabric is the simple, cheap, effective answer to internally-generated component EMI.
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