Originally Posted by moodue View Post
Thanks for the replies!

So... I'm really far into the painting process that I mentioned briefly with this subwoofer enclosure, including the top face.

T-nuts should do the trick, no?
I would echo what others have said about the too-thin MDF, and adding additional material.

T-nuts are fine for plywood, however their teeth tend not to readily/properly penetrate MDF. I recommend hurricane nuts instead - just be sure to carefully drill holes of the same size as the O.D. of the part of the hurricane nut that is meant to fit snugly into the hole in the MDF. A tiny dab of GOOP (or other suitable adhesive) applied to each hurricane nut flange will provide additional assurance that they'll stay put whenever you might need to remove the sub.