I am looking to build a box for my type r 10. It is currently in a sealed box with .85 cubes. I looked all over Alpines site and could not find specific plans for a tube or slot ported box. I listen to all types of music but mostly Alternative and Techno. The current box sounds pretty good I just want to get a little more out of it. I have 300 rms going to the sub if that helps.