Cleaning silver speaker cloth without killing it | AVForums
Jul 22, 2008·I used nothing more than soap and water on a cloth. I think the main concern wouldn't be the cloth shrinking but actually stretching the cloth. The M53s had the benifit of having plastic grille surround , not wood like yours. May be worth a go , being careful to keep moisture away from the wood as much as possible.. Good luck.
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