How to Fix a Spider on a Speaker

Written by ryan carter
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How to Fix a Spider on a Speaker
The spider, voice coil and former are manufactured as a single component. ( Images)

Without a properly working spider, a speaker is unable to function properly. The spider is a flat ring made of flexible material that is attached to the speaker's voice-coil and former. The spider holds the voice-coil in position while allowing it to move back and forth freely. If the spider becomes damaged to the point that it no longer functions properly, it cannot be repaired and must be replaced. Unfortunately, replacing the spider also involves replacing other speaker components. Most speaker manufacturers offer recone kits that include everything that will be needed to replace the spider.

Skill level:

Things you need

  • Utility knife
  • Razor blade
  • Index card
  • Recone kit
  • High-pressure adhesive
  • Soldering gun, solder

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  1. 1

    Remove all the parts adhered to the speaker frame. To do this you will need to cut away the speaker's foam surround, woofer, coil and spider using a utility knife. Remove glue and debris left behind using a razor blade.

  2. 2

    Center the voice coil from a recone kit within the speaker frame by inserting an index card inside the former in the centre of the spider. Locate the lower rim on the speaker frame where the old spider was secured. Apply adhesive to the lower rim. Be sure to use an adhesive that is manufactured to withstand high pressure, high temperature and dries without leaving a residue. Slide the former over the pole in the bottom of the speaker frame, setting the spider in place.

  3. 3

    Locate the tinsel leads that protrude from the spider. Solder the leads to the tinsel posts on the speaker frame.

  4. 4

    Slide the new cone over the former, on top of the spider. Apply adhesive to the area where the spider, former and cone meet.

  5. 5

    Apply two beads of adhesive to the new foam surround, one on the flat outermost edge and one on the flat innermost edge. Set the outermost edge of the foam surround onto the upper rim of the speaker frame and the innermost edge onto the cone. Press the foam surround with your fingers to check that the seal is complete on the cone and frame.

  6. 6

    Remove the index card from the former. Apply adhesive to the flat edge of the dust cap. Set the dust cap in place over the opening in the centre of the cone. Press the edge of the dust cap with your fingers so that it is completely sealed to the cone.

Tips and warnings

  • If you are unable to remove all of the adhesive from the frame, try wiping the speaker frame with a rag and acetone.
  • Allow the adhesive to dry according to the manufacturer's directions.
  • Do not use a superglue, epoxy or silicon-based adhesive when you recone.

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