Polk ES15 rubber discoloration
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Can anyone with the same speakers (or similar) tell me if this discoloration on the rubber is normal? Speakers are 6 months old, not under direct sunlight and always with the grills on. I am not sure but I remember when I first unboxed them they were pure black.
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~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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It's normal for butyl rubber to change color tone as time passes.
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It's normal for butyl rubber to change color tone as time passes.
OK, but is it normal for 6 months speakers out of the box? -
I can't tell you what is normal. I can tell you your surrounds look fine. Put the grills back on and enjoy the music.
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These are 10 year old S20 drivers. The surrounds pretty much look like yours, so I suspect yours won't change much from what they are now.
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Polk promo pic off the Net. Center cap is much blacker than the surround. In fact, looks just like yours.
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Since I can't sleep i tried very gently wiping that brownish residue with some cotton, and boom, after 2 or three passes It became like new again. Definitely looks like rubber oxidation.
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Looks the same...lol
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Looks the same...lol
Not really, you can see the cotton, it removed most of the "stains". -
I found this for sale, is this the same discoloration you mentioned? Is this still good?
The color looks different from what I see on google. -
That's just oxidation. Use regular Windex sprayed onto a soft cotton cloth, then gently wipe the surround in a circular motion.
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This is a funny thread... not the like a clown kind of funny.
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I found this for sale, is this the same discoloration you mentioned? Is this still good?
The color looks different from what I see on google.
No, this looks white, I think is called blooming. The discoloration I mentioned is more likely "brownish". But as you can see the cotton removed it. -
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