I took some photos of the 4 cuft ported model this evening. I'm really happy with this design.
This one took some changes to really make it go together easy. But it's done. This one is for the Dayton Ultimax or RS 12's and it uses two 3" Precision Ports. With the new tube extensions, you can port this under 20hz. It will accept ports about 25" long before getting too close to the rear panel. Yes, the photos have a nice Easter Egg tint to them.......even though they are actually sitting on bright white styrofoam!
I think my camera white balance is off.
The back brace on the rear panel can be turned the other way if you need to install a plate amp!