How to Fix a Blown Guitar Amplifier Speaker

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Most guitar cabinets use high volume speakers, but it is possible to overload and damage them. Follow these steps to fix them.

Things You'll Need

  • solder and soldering iron
  • basic tool set
  • Determine which speaker is damaged or broken. The easiest way to do this is to use a diagnostic CD and CD player to play various test tones through your speakers. Listen to each carefully and decide which is distorting sound, or not working at all.

  • Most guitar cabinets have a protective grill covering the speakers. Remove it with a screwdriver.

  • Carefully remove the broken speaker or speakers. Examine their cones and voice coils to see what exactly is damaged.

  • Repair a slight puncture or tear in a cone with a bit of tape or some light glue. Voice coils typically cannot be repaired, so if they are damaged, you will have to replace the speaker.

  • Before you install a new speaker, make sure you record the resistance, serial number and power handling data that's on the back of it. You will need to match this when you select a replacement driver.

  • Look online and at electronics stores to find the best deal on the speaker you need. Most guitar cabinets take 10-inch drivers that are rated at 100 watts or higher.

  • Before setting the new speaker in the hole, reattach or solder the speaker wires to the new speaker. Install the speaker into the cabinet using the old hardware.

Tips & Warnings

  • Research the cost of speaker repair, as it may be more economical to simply buy a new speaker cabinet and sell the old one for parts.
  • Check the warranty on your speaker cabinet so that you don't void the warranty.
  • Do not strip screw holes by tightening screws too quickly.
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