We at e93subwoofer.com have made the perfect subwoofer box for your E93 bimmer.  It has many add-ons from aesthetics to awesome SPL creation.  We have seen many articles such as,  http://www.m3post.com/forums/showthread.php?t=829249,  relating to the need for this subwoofer box in the E93 BMW convertible, and decided to give our customers what the wanted.

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