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<blockquote data-quote="Immacomputer" data-source="post: 8288974" data-attributes="member: 570419">Thanks for the compliment! It honestly sounds just as good as it looks and every day for the past 5 years I have been happy with it. So much so that I sealed up my trunk with expanding foam haha.I used to design for people here but unfortunately, I lost all the work I did modifying Martin J King&#039;s Mathcad worksheet for transmission lines. I had added equations that I came up with over the course of about a years worth of testing and building boxes. That&#039;s more work than I have time for right now nor am I usually home long enough with nothing better to do. I&#039;m still really sad and bummed out about losing it too as I was able to accurately predict/simulate cabin gain in my Integra and my 240sx coupe. I don&#039;t know of anybody else who has done that as most just apply some random 6dB/octave gain when that&#039;s no where near correct. It turns out, car interiors act like transmission lines. Ever heard of measuring the longest length of the interior to get your theoretical resonance or peak frequency? //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gifAlso, I noticed that every enclosure has 1/4 wave aspects to it, even sealed. That&#039;s why port area can have an acoustical difference, even if everything is the same, when in theory it should not.</blockquote>

[QUOTE="Immacomputer, post: 8288974, member: 570419"] Thanks for the compliment! It honestly sounds just as good as it looks and every day for the past 5 years I have been happy with it. So much so that I sealed up my trunk with expanding foam haha. I used to design for people here but unfortunately, I lost all the work I did modifying Martin J King's Mathcad worksheet for transmission lines. I had added equations that I came up with over the course of about a years worth of testing and building boxes. That's more work than I have time for right now nor am I usually home long enough with nothing better to do. I'm still really sad and bummed out about losing it too as I was able to accurately predict/simulate cabin gain in my Integra and my 240sx coupe. I don't know of anybody else who has done that as most just apply some random 6dB/octave gain when that's no where near correct. It turns out, car interiors act like transmission lines. Ever heard of measuring the longest length of the interior to get your theoretical resonance or peak frequency? [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] Also, I noticed that every enclosure has 1/4 wave aspects to it, even sealed. That's why port area can have an acoustical difference, even if everything is the same, when in theory it should not. [/QUOTE]

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