Guys I have been asking/looking around the web for a minute and have not found a solid answer to this. Is the proper way to use a 609 with the black side facing the guitar cab (silver side facing out), or with the silver side facing the guitar cab (black side facing out). I know it says "front" on the black side but I have seen them used both ways and I need to know which is correct, or if it even matters. Thanks!