Hmmm, dedicated HT room and two db-500's, sounds like maybe a dual ported sub is right up your alley? for the future larger room of courseThanks for the good woods guys!!! I appreciate you advice. I was thinking one more frame brace similar to the one at the bottom of the ports would have been helpful. I ran out of MDF and I thought...aaahhh go for it.
Germain: That is Rustoleum Flat Black Latex Paint. I didn't bother getting fancy since it is hidden from view anyway. I just wanted something to protect the MDF from humidity and such. As for sounding great....I like it, though you can see what I upgraded from in the first picture. Anything would sound good by comparison. I bought the db-500 because I thought it was a great value. I just bought TC's last one in stock because I now know it is a great value. I'll keep that one tucked away for a year or so until I start building a dedicated theater room.
WillyD: A few weeks ago, I posted pics over at AVSForum. You probably saw it there.
Others...thanks for the replies.
Great job overall. If only my DIY projects looked so nice.