I have two 12 inch punch hx2s in a sealed box. The LOW notes are not heard or felt I just see the subs looking like their trying to escape the box, Should I upgrade to a ported enclosure?
Ported is the way to go. I currently only have 1 12hx2 in a 2cubic ft box ported to 32hz and it is amazingly LOUD!! I had 2 but the other one blew and with both it was crazy!!! Check out ebay Subzone box and I guarantee that you will not regret it!!