so i built a new box

yepp everything was right and perfect and i have an old school purple u.s amp i think 1200watt peak but its like 800rms and 2 planet audio 15" subs

 
25 square inches of port with 3.91 cubes .... need closer to 60 - 75 square inches,

i got a 36 hz tuning.

you need around 6.5 cubes after displacements.

 
//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

6.5 @ 35 hz and youll never think about that sealed box again.

choking your subs.

 
i cant build any bigger unless i take out my back seat that how big my trunk is do do you guys think if i just seal up the port cause, its going into the box, the box will sound better? casue i dont want to put my old box back in

 
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