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  1. one box with 2 IXL18.2.2 and 2 Exodus PR21

    Ported Subwoofer Build Projects
    i have 2 IXL 18.2.2 and just ordered 2 Exodus 21" passive radiators. i was just wondering what size of box should i build for using them all in the same enclosure. i was thinking of having one front firing 18 and one back firing out of phase with one 21" on top and one 21" on the bottom. i need...