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  1. My sub box not tuning right

    Technical & Advanced Car Audio Discussion
    Okay so I have a custom fiberglass mdf box total airspace is 1.5 fitting one 10" woofer it's a shallow box deepest area is 5.5". So with all this and a 2" port area I'm trying for a mid 20 hertz tune 25-28 so about 7" in length except my tuning is 58-60 I'm pulling out my hair but I'm wondering...