how to prevent iron fillings from causeing speaker crackle on parpgon 2 diesels?

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   Big problem, speaker crackle on Paragon 2 diesel locos.  How to  remedy this problem? Any ideas?  Thanks

[richg]

You do not say where the speakers are so I will assume the oil tank. My BLI's have the speaker up over the rear trucks.
Take a piece of nylon gauze from a woman's hose.
From a simple Google search for iron filings loco speaker. Took a long time, about 65 seconds but I  found what I was looking for with a link to store in Favorites.

http://cs.trains.com/TRCCS/forums/t/162596.aspx

Have fun.

Rich