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<blockquote data-quote="notoriousroc1" data-source="post: 7296981" data-attributes="member: 576650">Hey guys,I recently ordered an Audioque HDC3 12&quot; Copper Coils D2. I&#039;ve had it installed for about 2 months on a RF T20001BD in a recommended sized ported enclosure. Just last week, I&#039;ve noticed that when I pop the trunk and listen to the sub I hear a scratching or a metal &quot;jingling&quot; sound. In the cabin, it isn&#039;t even noticeable.I&#039;ve metered the coils and they both meter to 1.8ohms exactly. I don&#039;t see a burned voice coil when looking in. I&#039;ve read that this MAY be due to not breaking in the sub properly. Honestly, I believe I did break it in properly. I played it at extremely low volumes for almost the first month. The suspension is still pretty stiff though. Any ideas? Do I need a recoil already???Also, if I pluck the dust cap with my finger I hear a metal &quot;jingling&quot; sound.Thanks for any and all help you guys can lend.</blockquote>

[QUOTE="notoriousroc1, post: 7296981, member: 576650"] Hey guys, I recently ordered an Audioque HDC3 12" Copper Coils D2. I've had it installed for about 2 months on a RF T20001BD in a recommended sized ported enclosure. Just last week, I've noticed that when I pop the trunk and listen to the sub I hear a scratching or a metal "jingling" sound. In the cabin, it isn't even noticeable. I've metered the coils and they both meter to 1.8ohms exactly. I don't see a burned voice coil when looking in. I've read that this MAY be due to not breaking in the sub properly. Honestly, I believe I did break it in properly. I played it at extremely low volumes for almost the first month. The suspension is still pretty stiff though. Any ideas? Do I need a recoil already??? Also, if I pluck the dust cap with my finger I hear a metal "jingling" sound. Thanks for any and all help you guys can lend. [/QUOTE]

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