Just wondering why I keep getting Qes aroun .734 and Qts around .660 for high Q, mid Q is off also, but not as much. Either way I'm also getting larger, and in some cases much larger, enclosures for sealed alignments compared with ascendants site. Example, low Q, which is closest in T/S to published specs,WinISD gives 5+ cubic feet for .7 Q box. Mid Q boxes are even bigger than spec. However, I tend to trust ascendants box specs more. Just wondering why ISD is off so much, or if atlas published specs are off?