Kasey r Posted August 28, 2018 Report Share Posted August 28, 2018 So I am building a box in my Tahoe and it will have 3 12’s my question is about the port I would like good spl and is a bigger port better then a smaller one and what is a good rule for square inch’s vs cubic feet I was told one day for every 1 cube 12square inch’s of port is that about right ? My box will be around 2.5 cube per sub they have a fs of 26hrtz I’m thinking like 35 hertz tunned. Please and thank you And square port or slotted port turned in like a L Link to comment Share on other sites More sharing options...
mestapho Posted August 28, 2018 Report Share Posted August 28, 2018 12-15 sq in of port per cube is the general recommendation for slot ports. What speakers and how much power will you be running? Link to comment Share on other sites More sharing options...
ckeeler11 Posted August 29, 2018 Report Share Posted August 29, 2018 the sq.in of port per foot rule is pretty shitty and should not be used. It will depend on the subs, the box size, power, and tuning. Link to comment Share on other sites More sharing options...
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