thegr8cody Posted December 21, 2006 Report Share Posted December 21, 2006 can someone tell me how to tune a box and figure for displacement with port,i'm using winsid beta and it sounds good but its tuned higher than it says,its supposed to be 32 but its around 40hz,my demeinsions are 44x26x20 and my port is 18.5" x 6.5" after displacement it came to 8.5 which is around what i need and i was told a 36" long port would give me 32hz tuning 1998 gmc sierra h/u:eclipse cd3200 sub:dd9518g d1.5 amp:jl e300/4 sub amp:dd m2a front stage:id ctx65cs dc power 270 alt lots of kicker 1/0 Link to comment Share on other sites More sharing options...
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