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    tuning for 40 hz w. 4 1508's

    im going to order 4 1508's for my truck. how should I tune it using round ports, im not sure how many I should use, I have a ton of 4" diameter tube laying around. I know how to calculate the length for 40 hz im just not sure how many ports is best to use for enough port area.




    01 Silverado ECSB 5.3
    Current: Yellow Top, Visonik V4000XD , 4 RE SE 12's, 8 cubes @ 35 HZ, Infinity Reference component door speakers, 1/0 power, big 3, and Pioneer headunit.




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    Re: tuning for 40 hz w. 4 1508's

    how do i calculate the port area of a 4" diameter pipe?




    01 Silverado ECSB 5.3
    Current: Yellow Top, Visonik V4000XD , 4 RE SE 12's, 8 cubes @ 35 HZ, Infinity Reference component door speakers, 1/0 power, big 3, and Pioneer headunit.

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    Re: tuning for 40 hz w. 4 1508's

    Quote Originally Posted by thur5d4yf4n View Post
    how do i calculate the port area of a 4" diameter pipe?
    pi x radius squared




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    Re: tuning for 40 hz w. 4 1508's

    pi*R^2




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    Re: tuning for 40 hz w. 4 1508's

    does anyone have amp recommendations on what I should use to power these




    01 Silverado ECSB 5.3
    Current: Yellow Top, Visonik V4000XD , 4 RE SE 12's, 8 cubes @ 35 HZ, Infinity Reference component door speakers, 1/0 power, big 3, and Pioneer headunit.

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