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Message: <blockquote data-quote="Haunz" data-source="post: 7214671" data-attributes="member: 576010">I'm sure you will want to move to a dual voice coil, and I'm not sure what will fit but a winding width greater then the stock 1" winding should certainly give you more xmax and powerhandeling. If a power HX2 coil would fit that would be a good option, so long as there are no clearance problems with the depth and the coil running into the backplate. You might also consider going with copper wire over aluminum for a lower FS and better powerhandeling. If you can get significantly more xmax with a different coil, you will obviously need a cone with a wider surround also.Manual for the sub can be found here incase you didn't know: <a href="http://www.rockfordfosgate.com/library/datasheets/pwr-415_815-ts.pdf" target="_blank">http://www.rockfordfosgate.com/library/datasheets/pwr-415_815-ts.pdf</a></blockquote>

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