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Message: <blockquote data-quote="Face of Fear" data-source="post: 6981841" data-attributes="member: 590638"><p>So I built my 3 cubic foot burp box, tuned to 47 hz(rez freq of my car). Put it in, hooked up the SPL Meter and hit 2 db higher than I hit tuned at 34hz in a full cubic foot to small box. Can anyone give me some ideas, pointers, or suggestions on why and how this is possible. It doesn't really even sound much louder on a burp to me. The box is built to spec, has 45's in all corners, no air leaking out anywhere, and a straight port(no L).</p></blockquote><p></p>

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