4" Port... Big Enough For This Box?

[Jonahdude 10+ year member]

If I had a box for 6 8" subwoofers, with a net volume of 4.46 ft^3, would a 4" port be big enough? It would be 3.5" long, which would tune it between 34hz and 35hz.

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[Moe Lester 10+ year member]

I would do at least 1 4" port per pair of 8s personally...

 

[Jonahdude 10+ year member]

so 3 4" ports, how long would each have to be to tune to 35hz? Would it still be 3.5 inches, or does it change when you add more ports?

 

[Jonahdude 10+ year member]

Bumped TTT!

 

[Jonahdude 10+ year member]

TTT again...

 

[Jonahdude 10+ year member]

Ttt, when adding more ports to you have to increase the length of each to maintain the same tuning?

 

[Exaran 10+ year member]

I just learned this last night: //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

For multiple ports, just divide the volume of the enclosure of the box by the number of ports, and calculate each port by itself

So with your numbers above, you divide 4.46 ft^3 by the 3 ports = 1.48 ft^3 per port

Now calculate the port as you normally would to tune a 1.48 ft^3 box to 34hz... then make all 3 ports that size. Get it? If not, I'm just wakin up, I can clarify later...

 

[Jonahdude 10+ year member]

I just learned this last night: //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
For multiple ports, just divide the volume of the enclosure of the box by the number of ports, and calculate each port by itself

So with your numbers above, you divide 4.46 ft^3 by the 3 ports = 1.48 ft^3 per port

Now calculate the port as you normally would to tune a 1.48 ft^3 box to 34hz... then make all 3 ports that size. Get it? If not, I'm just wakin up, I can clarify later...

Ahh, I get it, that makes sense. Can anyone verify that?

 

[Exaran 10+ year member]

I got it off JL's tutorial site if you wanna check that out

 

[Jonahdude 10+ year member]

Alright, it's not that I didn't believe you it's just that you said you learned it last night.

 

[OLD_SCHOOL 10+ year member]

hope your not tuning low