How to Remove Speaker Dust Cap

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Repairing speakers can be a tedious task. Without a steady hand, it is easy to permanently damage a speaker. When replacing the speaker cone or working on its voice coil, it is necessary to remove the speaker's dust cap. You can either destroy the dust cap while removing it and then replace it with a new dust cap, or you can gently remove it and reattach it after you are finished working on your speaker. Either way, you must use caution to avoid damaging the voice coil, speaker cone or any other part of the speaker.

Destroy the Dust Cap

  • Cut an "X" in the center of the dust cap. Use your finger to locate the middle of the dust cap. You should be able to push in a little bit without resistance. Use a utility knife and start your "X" shape at the center. Cut slowly outward in each direction, taking special care not to puncture any part of the speaker other than the dust cap. Do not push the knife too far in to avoid damaging the sensitive voice coil.

  • Remove the dust cover slowly and gently. Once you have an "X" cut into the dust cap, you can use a combination of your fingers and the knife to slowly remove it. Work toward the edges of the dust cap, cutting along the perimeter as necessary to peel the dust cap off. Carefully set aside each piece to avoid debris in the voice coil.

  • Use a piece of masking tape to clean up any pieces of the dust cover that may have fallen into the voice coil. The dust cap may be brittle, so pieces may fall into the voice coil. Carefully remove the pieces using the sticky side of the masking tape.

Preserve the Dust Cap

  • Position your knife parallel to the speaker cone. It is critical that you take your time and keep the knife above the speaker cone as even the smallest cut on the speaker cone can ruin the sound of the speaker.

  • Cut around the edge of the dust cap. Keep the knife right at the edge of the dust cap and cut slowly. Try to cut as straight as possible to preserve the aesthetic of the speaker. Try cutting a little bit at a time, then rotating the speaker and cutting a little more until you are all the way around.

  • Leave a little piece at the end of the circle when cutting to function as a hinge. The piece should be just large enough that it holds the dust cap in place. Bending the dust cap back, use a piece of tape to adhere it to the speaker cone. You can replace the dust cap easily when done by removing the tape and fitting it back in place.

Tips & Warnings

  • Use the smallest utility knife you can find. The smaller blade will give you more precision.

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