How to Rebuild 12" Woofers in Bookshelf Speakers
Bookshelf speakers are speaker cabinets and speaker systems used in home audio. The woofer is a part of the speaker that makes low-frequency sound. Both age and excessive volume can contribute to damage of the woofer, which can develop small tears. Rather than replace the entire speaker, the woofer cone can usually be repaired or swapped out. This process only takes a few hours, but the epoxy used in the repair should dry over night.
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Instructions
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1
Remove the screws holding the bookshelf cabinet cover in place.
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2
Disconnect the speaker wires from the back of the speakers.
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3
Remove the speaker from the cabinet by hand.
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4
Remove the old cone and spider with a putty knife.
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5
Place shims in the voice coil gap.
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6
Apply glue along the edge of the new spider from the re-coning kit, and then glue it to the edge of the voice coil.
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Glue the edge of the new cone, and then set it into place and hold it down firmly.
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8
Remove the shims and glue the dust cover into place. Let the re-coned speaker dry overnight.
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9
Set the speakers back into the bookcase cabinet and then attach the speaker wires.
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10
Replace the speaker cabinet cover and then turn on the radio to test the repaired woofer.
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