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<blockquote data-quote="audio_phill" data-source="post: 6232145" data-attributes="member: 605512"><p>Looked at the listed parameters for the E8 and I was right, an F3 of 51Hz in .3 sealed so at that point it turns into a beefy midbass. 79.64dB 1w/1m as well so 102dB before cabin gain (after adding gain from rms power) (usually about 10dB in a truck so it wouldnt even keep up with your full range, //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif...&nbsp; &nbsp; &nbsp;&nbsp; A passive radiator system might be the way to go there. Passives are pretty simple, you just calculate the enclosure like a vented box, then measure volume of air needed to tune to the desired tuning freq, then calculate the weight of that air and that needs to be the mass of the passive radiator. Also, its important to always use PR&#039;s with the ability to displace far more air than the active driver so 1 8&quot; woofer may need a 12&quot; passive or 2 10&quot; passives to keep the passives from reaching Xmech.</p></blockquote><p></p>

[QUOTE="audio_phill, post: 6232145, member: 605512"] Looked at the listed parameters for the E8 and I was right, an F3 of 51Hz in .3 sealed so at that point it turns into a beefy midbass. 79.64dB 1w/1m as well so 102dB before cabin gain (after adding gain from rms power) (usually about 10dB in a truck so it wouldnt even keep up with your full range, [IMG]//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif[/IMG]... A passive radiator system might be the way to go there. Passives are pretty simple, you just calculate the enclosure like a vented box, then measure volume of air needed to tune to the desired tuning freq, then calculate the weight of that air and that needs to be the mass of the passive radiator. Also, its important to always use PR's with the ability to displace far more air than the active driver so 1 8" woofer may need a 12" passive or 2 10" passives to keep the passives from reaching Xmech. [/QUOTE]

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