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Message: <blockquote data-quote="jrmax" data-source="post: 68466" data-attributes="member: 540655"><p>Ok guys I need some major help I am trying to build a ported box for one alpine type R twelve dvc 4 ohms.  I can not figure out the size of the port and I have read the JL audio tutorials a thousand times but can find a manufacturers suggested port size to figure it out. I am going to slot port it if I can get some hints.  Can some one point me to a sight tell me what they know or give thier email so I can send them my dimensions and get some advice thanks.</p></blockquote><p></p>

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