Do you have a "blown" Toyota Avalon 86160-AC180 rear subwoofer? Has the dealer quoted you $300 to $400 just to replace it? Instead of replacement you can easily repair it like new with our foam edge kit part # FSK-8M.
Here is what they look like when they are repaired. See how the edge of the cone is damaged and rotted around the frame (left speaker)? That issue is what causes it to distort. You can replace the foam as shown on the right.