I told my dad I wanted to get a black textured finish on my sub. Dad recommended we try some Gravel Guard. Do you guys know how this would work on a subwoofer enclosure? The enclosure is a 194L ported Tempest cube(well not quite a cube). We have some of this stuff at home so it we wouldn't need to go out and buy any. I figure I will try some on a piece of scrap MDF and see what I think of the results. The enclosure has been bare MDF since we built it. Has anyone here had experience with this type of finish?