tuning

[yo0123yo]

what do you guys think the tuning on this is?

http://cgi.ebay.com/ONIX-12-TRIPLE-SLOT-BOTTOM-VENTED-SUB-4-9-QFT-3SBVD12_W0QQitemZ9730591999QQcategoryZ50569QQssPag eNameZWDVWQQrdZ1QQcmdZViewItem

[hoodkid]

you cant just look and tell but could be anywhere from 30 - 42hz