Im sure this has been asked before, sorry if I didnt see it, but when figuring port length on WINISD, do you put net box volume or total box volume in WINISD to get the correct port length, the reason im asking is if you put total box volume, then you are goin to have to add port placement on top of that, is that right? or do you just put what volume and tuning freg. your sub needs and then add port dissplacement to that? Hope that made sense. Thanks a Whole lot.