I think I'm going to try it. Thinking approx. 11ft^3 with some polyfill. I know when I did this with my old Kicker L515s they hit harder and sounded better. I love the way my Qs sound now,and I think I could pull a 150 with the setup I have now, but I'm just curious bout what it would sound like in a sealed enclosure. And I'm not worried about "not being as loud" cause I know they would still get loud in a sealed enclosure. Plus with me running an Epicenter it would pick up the REALLY LOW htz better in the sealed.