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<blockquote data-quote="blazian87" data-source="post: 8489686" data-attributes="member: 574798">You can choose not to follow what the JL site says if you want. I don&#039;t see why you can&#039;t modify the specs based on your needs. Yes, always subtract the thickness of the wood and anything else you use for bracing when calculating net volume and port size. Usually I think of how much space I&#039;m willing to give up and scale down from there. There&#039;s a box tuning program where you can calculate the math of ported boxes within seconds. Download it here <a href="http://www.mediafire.com/download/rwlf754d3th1f56/Box_Tuning_Calculator.exe" target="_blank">Box Tuning Calculator</a>Since you have a tahoe, you probably can&#039;t expect much from a normal 10&quot; sub even when ported because there&#039;s so much more air space to fill than a normal sedan. When it comes to sound quality, you can achieve a good sound from ported boxes as long as it was well designed for your needs. Meaning trying to find a sweet spot where you know most of your music plays. If you are worried you are not gonna get enough output from your single 10&quot;, then definitely consider a transmission line box as that will give you the widest bandwidth and very good output. Not only does it sound really good with practically every type of music, it&#039;s also very efficient with power. You will be surprised what kind of output you get from a single 10&quot;. These type of boxes take up a lot of space but with your space, you can fit a nice quarter wave T-line and still have plenty of extra space for groceries and stuff. It&#039;s a win/win.</blockquote>

[QUOTE="blazian87, post: 8489686, member: 574798"] You can choose not to follow what the JL site says if you want. I don't see why you can't modify the specs based on your needs. Yes, always subtract the thickness of the wood and anything else you use for bracing when calculating net volume and port size. Usually I think of how much space I'm willing to give up and scale down from there. There's a box tuning program where you can calculate the math of ported boxes within seconds. Download it here [URL="http://www.mediafire.com/download/rwlf754d3th1f56/Box_Tuning_Calculator.exe"]Box Tuning Calculator[/URL] Since you have a tahoe, you probably can't expect much from a normal 10" sub even when ported because there's so much more air space to fill than a normal sedan. When it comes to sound quality, you can achieve a good sound from ported boxes as long as it was well designed for your needs. Meaning trying to find a sweet spot where you know most of your music plays. If you are worried you are not gonna get enough output from your single 10", then definitely consider a transmission line box as that will give you the widest bandwidth and very good output. Not only does it sound really good with practically every type of music, it's also very efficient with power. You will be surprised what kind of output you get from a single 10". These type of boxes take up a lot of space but with your space, you can fit a nice quarter wave T-line and still have plenty of extra space for groceries and stuff. It's a win/win. [/QUOTE]

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