Anyone have an estimate of how many Hz a JL12w7 H.O. box is tuned to?? ?

Called JL's tech support and they said the designers dont even give them the info on port tuning on the H.O. box because its a patented enclosure design by JL Audio.. Has anyine out there figured it out yet sumhow?? Or can u expkain to ne hiw I can go about finding that out please??? HELP!!!!!!!