Last summer, building off of Daytona Tom's rear speaker shelf, I built my own speaker shelf for my Sony 4x6 Xplode speakers. Since I posted a picture of that, I added a amp and 10" sub, both Sony Xplode series, and a fire extinguisher. I need to redo the amp rack a little, just some 1/8" wood, and replace mounting screws with black ones to blend in, but I like it, and it thumps.