Good morning, I have Cambridge Soundworks in-wall mc300'S. Do people here think I will gain a significant difference in sound by putting a box in the wall cavity and gluing some sound deading material before inserting the speakers? I have standard 2x6 studs with plaster coated sheet rock on both sides. What I would do is cut 4 strips of wood and insert each strip into the wall (glueing them in place). One on the bottom then the two side and one on the top. Nothing on the back. Or will this create an air tight situation causing the driver to struggle to move?