Is it sacrilege to put my 1x15 on top of my 4x10? The 4x10 has casters which elevate it and the 1x15 has none. I really don't want to put either cabinet directly on the floor because we just had flooding in my area last weekend and I was just able to get to the cabinets (and my basses ) just before the water got to them. I want to be ready in case this happens again. Will I lose substantial low end with this configuration?