OBS Step Brothers on Instagram: "After we finally got around to putting our custom jack box speaker box in the truck, you guys had to have one of your own. Our good friend Joby did an awesome job building the first one, and now Alan @a.i.c.audiocraft has taken the idea to a whole new level. These boxes hold two 6.5” subs and there’s even a custom option for one that holds your amp. The box is now live on their website and if you watch the video, Alan drops a code to get a few extra dollars off.