all4spl Posted November 23, 2012 Report Share Posted November 23, 2012 Just a short video of my newest ported box, 4cuft tuned at 33hz 58sq in of port area. Retired from SPL again.... 2016 IASCA Truck/Trunk 2 Champion 151.8db 2016 IASCA Truck/Trunk 2 World Record Holder Link to comment Share on other sites More sharing options...
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