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<blockquote data-quote="winkychevelle" data-source="post: 8834861" data-attributes="member: 611804"><p>Is this a completely factory car? Or aftermarket with a full install?</p><p></p><p>The glass windows create reflections of which the tweeters likely capitalize on to actually sound louder. Think of a megaphone </p><p></p><p>As far as the midbass, opening the window often creates a gap in the top of the door that allows more airflow in the compartment that the midbass is mounted. This lowers the internal air spring effect and thus lowers mechanical power handling. That gap also lets more of the rear wave interacted with the front wave and cause cancellation. </p><p></p><p>It isn't uncommon to lose some high frequency output with the windows down and typically you actually gain in the bass region since the sub receives more cabin gain at a lower frequency</p></blockquote><p></p>
[QUOTE="winkychevelle, post: 8834861, member: 611804"] Is this a completely factory car? Or aftermarket with a full install? The glass windows create reflections of which the tweeters likely capitalize on to actually sound louder. Think of a megaphone As far as the midbass, opening the window often creates a gap in the top of the door that allows more airflow in the compartment that the midbass is mounted. This lowers the internal air spring effect and thus lowers mechanical power handling. That gap also lets more of the rear wave interacted with the front wave and cause cancellation. It isn't uncommon to lose some high frequency output with the windows down and typically you actually gain in the bass region since the sub receives more cabin gain at a lower frequency [/QUOTE]
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