1976 Silverado Posted November 9, 2010 Report Share Posted November 9, 2010 Hello everyone.. i currently have a 15'' fusion powerplant sub the model number is pp-sw15h and would like to build a ported box.. i am looking for deep bass not sure what freq.. i'm not exactly sure how to draw the ports.. any help would be greatly appreciated. Link to comment Share on other sites More sharing options...
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