Got the amps a couple of days ago- they sound nice but they look appallingly functional. For my dream project, the spacing needs to be as per the pic. Second pic is the DJ logo I want to use - going to see if I can get it aluminium etched in the next few days. It'll be silver - its only black because that's what the laser needs (it will remove the white between the lettering, leaving the silver behind.) If it works well I'll try various sizes. I need to do it in a material that resists paint solvents, so that will take some experimenting.