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Treating foam speaker surrounds

Does anyone know of a way to "treat" foam speaker surrounds to keep them from crumbling into dust ? While i know that all foam surrounds will decay over time, my prime concern right now are the woofers that i have mounted in the back deck of my car. Due to the extreme heat and sunlight beating down on them, i know that they won't last long in there. I am looking for "proven" methods as i don't want to do further damage or speed up the "rotting" process.

I've had two 8's and a 12" in there for about two years now and the 12" is starting to look "funky" in terms of discolouration but is still solid. Seeing that i have to remove the back window to replace them, i would like to be able to preserve these as long as possible. Any ideas or suggestions ? If you don't know for sure that what you mention is a valid approach, PLEASE state so in your post. I don't want to be anyone's "guinea pig" : ) Sean
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PS... I'm sure that others with older speakers ( home or car audio ) would LOVE to hear about something like this also.
sean

Showing 1 response by ultrakaz

ultrakaz
187 posts
 
I have used 3m Scotchguard on my foam surrounds on a pair of home speakers for about 5 years or so with good results-no rot yet and I live in rather high humidity. I have heard of others putting foot powder on the surrounds because they believe it is some sort of bacteria that eats up the foam. Caveat, I have never tried this.

A better solution might be to tint your windows with a metallic type of tint that reduces heat and blocks out uv light. You could also try putting a screen over the speakers (like a grill) to further block out heat. My friend's Mercedes has this type of screen (retractable) that you can actually see through, yet blocks out heat and light.
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