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Message: <blockquote data-quote="Trixter" data-source="post: 2048513" data-attributes="member: 542668"><p>i would do it with the windows up this way your getting a true inside reading. measure the dB inside the car (for outside testing, have the sub outside of the car). how quite or loud your system is doesnt matter. your just trying to get a dB curve. the location should not have an effect. however, i would have it in about the same location as you normally would have your sub. as long as it's the same box for inside and outside testing, the box doesn't have to be exact because all your testing will remain consistant either way.</p></blockquote><p></p>

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