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<blockquote data-quote="Jeffdachef" data-source="post: 8421369" data-attributes="member: 650438">He&#039;s going for something completely different man. He is making a sealed box to find the resonant frequency of his vehicle so he can tuned his ported box either to the resonant frequency to get a really high spl score, Or tune low enough to get a flat response after factoring in cabin gain. Lets say your peak frequency is at 50 hz, if you tune high like 40hz or something, your car will sound very peaky. However if you tuned to 30hz, it&#039;ll shift the frequency response to a lower octave allowing you to peak lower and sometimes achieve a more flatter response.Also that calculator is not comprehensive at all, there are many displacements you need to account in.&nbsp; Use torres box calculator instead.&nbsp; For your ported box inf your other thread, the port area is very small, that loss of sound quality can be attributed to port compression.Ported boxes get a lot of flack for not having a flat response, its because a lot of people dont know how to make a flat response ported box. They just shove a sub in a ported box and think it&#039;ll work fine.&nbsp; While in fact theres many factors of the box you can manipulate to achieve a very flat, loud and very good sounded ported box based on the parameters of each sub.</blockquote>

[QUOTE="Jeffdachef, post: 8421369, member: 650438"] He's going for something completely different man. He is making a sealed box to find the resonant frequency of his vehicle so he can tuned his ported box either to the resonant frequency to get a really high spl score, Or tune low enough to get a flat response after factoring in cabin gain. Lets say your peak frequency is at 50 hz, if you tune high like 40hz or something, your car will sound very peaky. However if you tuned to 30hz, it'll shift the frequency response to a lower octave allowing you to peak lower and sometimes achieve a more flatter response. Also that calculator is not comprehensive at all, there are many displacements you need to account in. Use torres box calculator instead. For your ported box inf your other thread, the port area is very small, that loss of sound quality can be attributed to port compression. Ported boxes get a lot of flack for not having a flat response, its because a lot of people dont know how to make a flat response ported box. They just shove a sub in a ported box and think it'll work fine. While in fact theres many factors of the box you can manipulate to achieve a very flat, loud and very good sounded ported box based on the parameters of each sub. [/QUOTE]

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