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    3rdGen V8's Avatar
    3rdGen V8 is offline Junior Member



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    External port

    I am building a ported fiberglass sub enclosure. It will house 2 mtx 7500s. 4cf total, 2 per chamber. since my space is limited i was wondering if i could make an external port out of pvc pipe. If so, what would the proper size pvc be and what length to tune it to 38 hz







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    ruckus's Avatar
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    Re: External port

    yes you can. and the length depends on the diameter of the PVC. you can do 2 x 4" pipes @ 8.6" ea not counting any flares you have on them to eliminate port noise.




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