How to Fix Holes in Speaker Foam Rubber Surrounds

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The main objective when patching small holes or tears in a foam rubber speaker surround is to maintain the structural integrity of the surface while allowing freedom of movement. Since speakers constantly vibrate to produce sound, the patch must move in tandem with the speaker surface while still filling the hole and maintaining the bond. A dab of silicone sealant on the damaged area will repair the speaker surround without affecting audio output quality.

Things You'll Need

  • Screwdriver
  • Wax paper
  • Silicone sealant
  • Remove the speaker grille frame to expose the speaker. Most frames are attached with Velcro or plastic pins and are easily removed.

  • Place the speaker cabinet on its back, with the speakers facing upward.

  • Remove the damaged speaker's mounting screws with a screwdriver. Put the screws aside for safekeeping.

  • Pull the speaker out of the cabinet, laying it face-up on the cabinet top. Remove the two wires if it helps, but note their colors and locations so you can put them back in the right place.

  • Place a small strip of wax paper on the underside of the hole or tear and hold it in place with your finger.

  • Apply a small amount of silicone sealer to the top of the hole or tear. Apply just enough sealer to fill the damaged area. A pea-sized amount or less should be sufficient.

  • Place another square of wax paper over the silicone, forming a sandwich between the upper and lower repair area. Gently pinch the wax squares together, forcing the silicone to cover and penetrate the damage, and smooth the surface.

  • Leave the wax paper in place and allow the silicone to set for the recommended time on the package--typically 24 hours.

  • Peel the wax paper off carefully and inspect the repair. If the hole did not seal completely, or gaps are present, apply more sealer and repeat the wax paper-and-setting process.

  • Reattach the speaker wires and reinstall the speaker into the cabinet.

Tips & Warnings

  • Use silicone sealer in a well ventilated area and follow all warnings on the package.

References

  • Photo Credit Chad Baker/Ryan McVay/Photodisc/Getty Images
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