Introduction
Speakers rely on precisely placed components to convert electronic signals into sound waves. Touching the speaker by pushing or pulling can cause the speaker components to deform. As a result, the speaker will no longer produce an accurate sound. Replacing the speaker is the best repair for speaker damage.
Tools
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            Use a #0 Phillips screwdriver to remove the eight 13mm Phillips head screws from the back panel. 
 
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            Use a#4 Phillips screwdriver to remove the four 9.5mm screws that secure the subwoofer to the woofer box. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.