thegr8cody Posted July 7, 2007 Report Share Posted July 7, 2007 i see all these boxes that only need like 150 inches port and they have like 300+ how do u figure out your tuning i dont think that'd be on a box building program 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...
Derrick824 Posted July 7, 2007 Report Share Posted July 7, 2007 The tuning is still figured the same way using a port calculator such as WinISD. Link to comment Share on other sites More sharing options...
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