box tuning quick question

[soulnomad 10+ year member]

my box is 4.42cu^3ft (4.27 after sub displacement) and my port is 16.26" long with a diameter of 6" and a height of 12.5", i was just wondering could someone give me an estimate of what my tuning is, or an equation? i've tried to calculate and i came up with somwhere around 34hz. thanks!

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[PSturmer 10+ year member]

if its a slot port then tuning is 42-43

 

[soulnomad 10+ year member]

ahh is there a way i could get it down to 34hz or better yet, 30hz and keep the 6" diameter?

 

[soulnomad 10+ year member]

anyone??

 

[diatribe 10+ year member]

Diameter would assume you are talking about a round port.

I think that you must mean width. If you have a 6 inch by 12.5 height slot, the only way to tun it lower would be to lengthen the port or decrease the external port area.

 

[soulnomad 10+ year member]

yeah thanks i actually got off my a$$ and learned how to design one on WinISD Pro, ended up making the port 3.75" wide and 22.25 inches long to get 5.5 net to 4.4 gross with displacements and all