LW No, I won’t smoothing the insides. Normally speakers have baffles inside anyway. but not these as they are so small. The insides will not be seen anyway once the splayed horn ends are glued on and the speaker will be screwed to them below the outside rim. I will be smoothing the inside of the splayed ends though as part of their interiors above the speakers will still be visible.

Mike, an American living in Norway