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Message: <blockquote data-quote="BrianChia" data-source="post: 3752237" data-attributes="member: 576132">You will get a huge peak around 35-40 hz.For automotive applications there is almost no way to achieve true "SQ" with a ported box unless you have tons of EQ. Even tuning "low" will give an unnatural peak near the tuning frequency while output below that is attenuated too quickly. Contrary to popular belief tuning lower won't really give better SQ. It just shifts the peak downward to lower frequencies. A sealed or 4th order bandpass will give the flattest and lowest response if designed correctly since the rolloff of a sealed box more closely complements the typical transfer function of a car.</blockquote>

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