How to Repair a Blown Bose Speaker
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A blown speaker in your Bose stereo surround sound system can severely interfere with performance. Even a small tear in the speaker can create a blurry sound quality.
Replacing the blown speakers in the Bose system is very expensive. But you can fix the problem temporarily.
Remove the cover image of your speaker enclosure. The design of the coverings varies by model, but they are usually made of delicate fabric and can be removed by hand or by removing a few screws.
After the cover image is removed, you will be able to see the entire face in front of the speaker.
Using your screwdriver, remove the screws holding the speaker in place. You need to be able to lift the speaker to a height of 1 to 2 inches. Do not remove the speaker completely yet.
Lift the speaker of the premises as far as you can to move the wires running from the back of the speaker to the enclosure. Then reach behind the speaker and gently remove the two wires from the speaker. Once the speaker is unhooked, it should be lifted independently from the enclosure, allowing the wires to still be securely attached to the enclosure.
Finding and repairing tears:
Check the outer edge of the front of the speaker for any tears. Depending on how long the speaker has been damaged, the tears can range from pea-size to a hole of three or four inches. If you find a tear on the outer edge of the speaker, cover the hole with a piece of duct tape, making sure the hole is adequately closed. Although a well-closed tear prevents the speaker from cluttering up, it can cause the speaker to be quieter and less resonant.
Look at the tear on the back of the speaker, and find the conical-shaped reflective paper cone that connects the speaker's wide face to the speaker's large magnet. Typically, these cones are made of durable paper or Kevlar and can explode when the speaker is closed too loudly. If you find a tear on the cone, you can repair it with duct tape in step 1. But since the cones are made of rough paper, the repair is a bit tricky.
Plug the speaker wire back into the terminals and replace the speaker in the enclosure. If you fix the speaker enough, it should work with a very good resolution.