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Can someone confirm some number for me? 4th order
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<blockquote data-quote="THATpurpleKUSH" data-source="post: 8635474" data-attributes="member: 615398"><p>I'd go a little bigger ported if you can, like a 2:1 or 3:1 ported to sealed ratio. Port area looks ok but I got 13.4 inches needed for a port tune of 47hz. 7.3 inches puts the tune closer to 54hz.</p><p></p><p>Edit: I just realized you said 10x30 for port area, I originally thought you said 7x30 when I checked the math. That gives you 300sq inches of port which means the tune is even higher than 54hz. With a port that big you would need almost 22inches of port length to tune to 47hz. 7.3 inches puts the tune closer to about 61hz.</p><p></p><p>So the changes you need to make are making the ported side larger and slightly shrinking the port down to 20-24sq inches of area per cubic foot or make your port length longer which eats up a lot of space. What vehicle, what subs and what amp are you using?</p></blockquote><p></p>
[QUOTE="THATpurpleKUSH, post: 8635474, member: 615398"] I'd go a little bigger ported if you can, like a 2:1 or 3:1 ported to sealed ratio. Port area looks ok but I got 13.4 inches needed for a port tune of 47hz. 7.3 inches puts the tune closer to 54hz. Edit: I just realized you said 10x30 for port area, I originally thought you said 7x30 when I checked the math. That gives you 300sq inches of port which means the tune is even higher than 54hz. With a port that big you would need almost 22inches of port length to tune to 47hz. 7.3 inches puts the tune closer to about 61hz. So the changes you need to make are making the ported side larger and slightly shrinking the port down to 20-24sq inches of area per cubic foot or make your port length longer which eats up a lot of space. What vehicle, what subs and what amp are you using? [/QUOTE]
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Can someone confirm some number for me? 4th order
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