Hi Jeremy,
Nothing special regarding the glue up method. My flatpack fit together so well the bottom did not needed to be in place to keep the speaker square when assembling. For me leaving the bottom off made sealing the interior and installing the no-rez a whole lot easier. I did end up gluing the bottom on once the crossover board was mounted. Sorry no additional pictures, but if you need more information you can can PM me.
I currently have about 60 hours on the NX-Studios and the subwoofer and they sound great! I'm still blown away by the detail in the sound!
Hope that helps,
Mark