How to Fix a Tear in a Speaker Foam With Glue

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Stereo speakers can certainly be durable and can withstand years of use before needing to be replaced. Finding a tear in the foam of your speakers, however, can be devastating as fully replacing your speakers can be extremely expensive. Thankfully, you should be able to repair tears in the foam of your speakers on your own with some care and time. Knowing how to do this can save you plenty of money and the aggravation of trying to replace whole speaker sets.

Things You'll Need

  • Toilet paper or tissue paper
  • Glue or contact cement
  • Speaker repair kit
  • Razor or utility knife

Repair Small Tears

  • Remove the speaker cone from the speaker. Take note of all tears in the foam surround of the speaker.

  • Tear or cut off a piece of toilet paper, tissue paper or other thin paper product that is large enough to cover the tear and about an inch in all directions around the tear. Do this for all tears that may appear in your speaker foam.

  • Apply a layer of glue or contact cement to the paper patch as well as to the back of the speaker foam. Place the patch firmly into place over the tear.

  • Allow the glue to dry completely; depending on your adhesive product, you may need to wait overnight for the adhesive to dry. Apply more glue as necessary to secure edges or areas that did not stick appropriately.

  • Allow all adhesive to dry completely before returning the speaker to use.

Replace the Foam

  • Purchase a speaker repair kit from an electronics supply store, such as Radio Shack. Kits will come with new foam for your speaker as well as adhesive.

  • Remove the speaker cone from the speaker; make sure you get all of the foam, particularly if it is deteriorating or falling out. If you are unsure about how to remove your speaker, consult your product’s manual or the manufacturer’s website as instructions vary by product.

  • Remove the cardboard gasket from the speaker cone by carefully prying it with the edge of a utility knife or razor. This may take several passes, so be patient. If possible, preserve the gasket; some repair kits may include spare gaskets, but some will charge extra.

  • Scrape away any old foam residue or adhesive residue from the steel frame around the cone. You don’t need to get every speck of old adhesive off; your goal is a smooth surface for the new adhesive to stick to.

  • Place about 1/8 of an inch of adhesive onto the steel frame and also onto the back of your new foam surround. Spread it around with your finger or with your utility knife until it forms a smooth, even layer.

  • Apply the foam to the frame before the adhesive has time to dry. Apply pressure in appropriate places to ensure the foam sticks evenly. Allow this adhesive a few minutes to set and dry.

  • Lift the edge of the foam gently and apply a thin layer of glue to the edge and also to the side of the steel frame. Apply pressure on all sides of the foam to adhere it to the side of the steel frame. Allow all adhesive to dry.

  • Reinstall the cone into the speaker once all adhesive is dry.

Tips & Warnings

  • When you remove the cone from the speaker, take note of how the wires hook up so that you can properly reinstall it later.
  • If necessary, you can rub a small amount of rubbing alcohol on old foam or adhesive to loosen its hold on the steel frame.

References

  • Photo Credit Brand X Pictures/Brand X Pictures/Getty Images
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