I have a 15" speaker (behringer b115) that sounds blown. I unscrewed the speaker from the cabinet (removed all screws to eliminate the possibility of loose rattling screws) and realized it plays clean when I press on one particular side of the speaker. I can buy a replacement off brand cone for less than $100 but if it is an easy repair id rather fix it. I was even thinking of placing a sponge on the speaker between the cone and the grill to keep pressure on the cone eliminating the distortion, but I fear that may be bad for the speaker. here is a video showing how the speaker sounds and what happens when I press on the side of it
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