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<blockquote data-quote="Jeffdachef" data-source="post: 8704465" data-attributes="member: 650438">general assumptions about box design types without factoring in cabin gain is dangerous. Without a proper loading wall you will get absolutely no bass. Massive cancellation issues in a truck, going sealed is pretty much bass *******.&nbsp; The type of woofer used has to match with it too. The Theile small parameters used to calculated the efficiency bandwidth product will tell you if the sub can thrive in a ported or sealed or 4th order or 6th order or 1/4 wave transmission line etc... Not every sub will sound good in a sealed, in fact most higher powered subs nowadays hot on the market are absolute garbage in sealed(extremely stiff suspension, high FS, high motorforce aka BL, low QTS high EBP and some sealed boxspecific subs (softer suspension, lower FS, shorting rings higher QTS, low EBP etc...)Sealed box would only work in one of his cars. while it&#039;ll be completely and utterly useless in the truck. Anyone that&#039;s tried a sealed box in a truck knows how finicky the cabin gain works with no real loading walls.</blockquote>

[QUOTE="Jeffdachef, post: 8704465, member: 650438"] general assumptions about box design types without factoring in cabin gain is dangerous. Without a proper loading wall you will get absolutely no bass. Massive cancellation issues in a truck, going sealed is pretty much bass *******. The type of woofer used has to match with it too. The Theile small parameters used to calculated the efficiency bandwidth product will tell you if the sub can thrive in a ported or sealed or 4th order or 6th order or 1/4 wave transmission line etc... Not every sub will sound good in a sealed, in fact most higher powered subs nowadays hot on the market are absolute garbage in sealed(extremely stiff suspension, high FS, high motorforce aka BL, low QTS high EBP and some sealed boxspecific subs (softer suspension, lower FS, shorting rings higher QTS, low EBP etc...) Sealed box would only work in one of his cars. while it'll be completely and utterly useless in the truck. Anyone that's tried a sealed box in a truck knows how finicky the cabin gain works with no real loading walls. [/QUOTE]

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