This is my first time posting, although I've been a long time reader of the forums. I am rebuilding this sub in a new enclosure, with a new amp, since I did such a cheapo job last time I built it. I had basically just thrown it in an old Velodyne enclosure that was made for an 8 inch sub with a passive radiator, and used the amp that was in it (60 W I believe). This was way underpowered and too small and kind of a flimsy enclosure for the sub. I just purchased a 250 W Dayton plate amp, and plan to use a solid slab door that I have for the enclosure. The door is 1.5" mdf with a 1/8" oak veneer on each side. I plan to miter the 4 sides, and have the end walls able to be adjusted in or out to increase or decrease enclosure volume. I'm thinking that with this thickness, I won't need to brace the cabinet internally. Any thoughts? This is my first build from the ground up, and I haven't used any modeling software, just REW. I know the volume target is around 30 liters, and I'm building to be able to go from ~30 to 39 L.