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  1. J

    Thoughts/ideas on a 21" ported horn sub

    Save yourself the trouble and check out the Devastator thread over on AVSForum in the DIY section for multiple versions and tunes or if you want to buy one precut: https://shop.gsgad.com/collections/horn-subwoofers The current hotness on these is the Finalizer variant tuned to 16Hz, I've...