justinxx2001 Posted October 13, 2017 Report Share Posted October 13, 2017 Hi guys. I have two ma audio hk12x2's and I'm having a hard time finding the ported box specs. I found it on SMD's forums in the past but lost my notes on it. I know the box needs to be 3 cu ft per sub but I am unsure of the port size. I'm pulling the back seats out of my truck so I have plenty of space for the box. Link to comment Share on other sites More sharing options...
Joe X Posted October 14, 2017 Report Share Posted October 14, 2017 A 6 cubic feet net box tuned to 34Hz would require some 85 square inches of port area. Port effective length would need to be about 28" on those conditions. Link to comment Share on other sites More sharing options...
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