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Woofer Surround Cleaning

jozeppy26

Active Member
This is a closeup picture of one of my HPM-100's woofer surround. This is the rubber part that attaches the cloth surround to the aluminum cast frame. As you can see, there is this white patchy substance (only on one woofer) that does not wipe off easily. Any suggestions how I might remove this? Acetone? Using a damp cloth did not work.

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I think your acetone idea is likely the next best step. I would shield the surround, cone, and aluminum beauty rings and then use the acetone with a toothbrush. Acetone is one of the "mildest" of the oil-based paint thinners, and should not damage the area your want to clean. Afterward, I'd remove the acetone with some mild household cleaner of some kind.

Let us know how it comes out (pun intended).

GeeDeeEmm
 
Bingo! I carefully used acetone and a soft cloth on the rubber surface avoiding the adhesive and the sealant on the surround and avoiding the cone. I did not use a tooth brush because as I was applying the acetone with the soft (white) cloth, a ton of black was coming off of the rubber and onto the cloth. I feared a toothbrush would be too abrasive with the acetone so I just continued to lightly use a cloth. I then used Armor All original protectant to clean off the acetone (spraying it onto a cloth and wiping it onto and off of the rubber). A final result picture is below. As always, thank you AudioKarma geniuses for the advice and final go-ahead!

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Quick, remove the ArmorAll with the acetone. There's nothing worse than that crap for rubber.
 
It’s been wiped off with a damp cloth several times now. :D
Good to know. It's amazing to me the damage that armor-all can do to rubber. I've brought turntables home (parts machines) where people have used it on the rubber platter mats - and the mats were as hard as can be. They'd snap when I try to bend them. Hopefully you wiped it off quickly enough.
 
Good to know. It's amazing to me the damage that armor-all can do to rubber. I've brought turntables home (parts machines) where people have used it on the rubber platter mats - and the mats were as hard as can be. They'd snap when I try to bend them. Hopefully you wiped it off quickly enough.

Is there a lubricant I should apply now just in case?
 
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