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<blockquote data-quote="Lasherž" data-source="post: 8704430" data-attributes="member: 679555">It sounds like it&#039;s hitting xmax or is at least under dampened. That can happen due to fatigue in ported or vented enclosures and can happen due to an air leak in a sealed enclosure. It could also happen due to a hole in the cone/surround. That&#039;s assuming no settings have changed between not hearing it and now hearing it on the same songs. It could also be something like a dust cap falling off and interacting with the back side of the cone inside the box, something resonating against the box, your car resonating from that specific note... Quite a few things. If it&#039;s the driver making that sound in a clean box then the box needs more dampening to keep the driver from experiencing so much unproductive excursion.If you did change settings then you should probably reassess the new ones.Is your amp well matched to your subwoofer? Is it more powerful? Did you set up the amp properly to not clip?</blockquote>

[QUOTE="Lasherž, post: 8704430, member: 679555"] It sounds like it's hitting xmax or is at least under dampened. That can happen due to fatigue in ported or vented enclosures and can happen due to an air leak in a sealed enclosure. It could also happen due to a hole in the cone/surround. That's assuming no settings have changed between not hearing it and now hearing it on the same songs. It could also be something like a dust cap falling off and interacting with the back side of the cone inside the box, something resonating against the box, your car resonating from that specific note... Quite a few things. If it's the driver making that sound in a clean box then the box needs more dampening to keep the driver from experiencing so much unproductive excursion. If you did change settings then you should probably reassess the new ones. Is your amp well matched to your subwoofer? Is it more powerful? Did you set up the amp properly to not clip? [/QUOTE]

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