Today the milled piece of aluminium, which will be my prototype for the front plate, arrived. It measures 45 x 80 x 4 mm³. I'll test how i can mount the leds, seal the holes with epoxy and so on.

The ring on the right side will be the back illumination for the knob. The inner diameter is 30mm, the outer diamter 35mm, which results in an 2.5mm wide slot. No idea, how to fit a 3mm led in there :-/ Next time it should be <= 5mm wide.

In the center there are eleven ("Well, it's one louder. Isn't it?") 3 x 5 mm² wide slots, which will act as an analog vu meter. I'm not sure if I would use this, but i'll give it a try.

The space on the left will be used for some custom 3mm and 5mm holes. They will be used as an channel indicator.

I'm still waiting for te leds and the epoxy. I will take some time until I can drill the holes, as i don't own a drill press. Until then i can only mark the holes and play with the TLC59401, which will drive the leds an the front plate.