@rayray57 from JayJay53, my advice is a combination of (1) live with it and (2) repair it enough so that you can live with it.
Tier 1: Get out a black magic marker and hide the raw wood
Tier 2: Get some Plastic Wood or other wood putty on it, and either layer it up to size or oversize it before sanding smooth and either staining or painting to match
Tier 3: Considering the difficulty of matching a piano black finish, consider the putty + sanding repair before painting them a whole new color, like yellow for the patio, or pink for a bedroom, etc. This option will result in a whole new speaker in which the damage is well-hidden. (My grandfather was famous for eventually painting all his old furniture.)
Best of luck any way you choose to go.
(Any professional repair will likely run you low three figures, in my opinion.)