Has anyone tried running one of these in a sealed configuration? Like ummm, well putting a sock it, literally. Put a sock or two in the port, bunch them up, roll them up, whatever it takes to block the port so little or no air is coming out of the port when there is a good amount of bass. I did this to a old DIY sub that originally had a 8 inch driver that the Lion King on VHS blew up, and I went with a 12inch JBL driver, and well I think the box and port are to small for the JBL and about two years ago I put a sock it, and man totally changed the subs performance. I have never measured it but it sure seems smoother to me.
ANYWAYS, try it with the F-12, if you hate it de-sock it, lol. Oh and has anyone used REW on the F-12 in their room? I couldn't find any plots.