I was looking at the dimensions, they say : 21.25" (53.9cm) x 11.5" (29.2cm) x 12.5" (31.8cm). So that is hxdxw? If it is 11.5 in depth I assume that is the top of speaker, if so what would the depth be at bottom? (if you know) Also, what type of finish is on these? Are they easily paint-able. including grill,, which I think is metal?Thanks so humoring me, Sam