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Hey guys... almost ready to put in my sony 12" 350rms with cadence amp (300 max:ermm:) and i want it to sound good. so i've been to diysubwwofers.com and it is way over my head, anyone know how to calculate the frequency. I need a tuned frequency of 30.5Hz
 

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you tune your enclosure by using different port lengths (if the box is ported). the longer your port, the lower your tuning will be. also, port width will play a factor as well. for example, if you use a 4" diamater port it will need to be much longer to achieve the same tuning if you used a 2 inch port (speaking of round ports, not slot ported enclosures). your enclosure dimensions will play a part in this as well.


this site is awesome for the DIY guy give it a try....

http://www.carstereo.com/help/Articles.cfm
 
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