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Building a Ported Subwoofer Box for DEEP BASS!!! How To Design & Build LOW TUNED Slot Port Enclosure Dual ported subwoofer box It's ridiculously easy to build a SPL sub. It's nothing more than getting a huge motor, a huge coil, and tossing it together with 3 or 4 stiff This detailed, step by step, easy to follow video shows building a better subwoofer box by using a design that is custom made for ๐๐๐ ๐๐๐ซ๐ฒ๐ฅ๐ข๐ ๐๐ฉ๐๐๐ค๐๐ซ:๐๐$ ...