Dynaudio cherry color fading due to sun exposure

[metaphacts]

Originally Posted by Glisse

Yes, to be more serious than my last comment, most sealed finishes employ a tint to make the underlying wood veneer look oiled. It is most likely the tint is breaking down by UV radiation.

The OP could ask Dynaudio what they use, as I'm sure they will provide advice. But I would think once it has faded, the only way to get a perfect result is to sand off the sealant and reapply - using one that is relatively UV stable. I certainly agree with your earlier comment that for Otenmsa to try and put anything on top of the existing finish is likely to make things worse.

[dirtbag]

Originally Posted by metaphacts

Walnut and cherry have very different UV sensitivities.

Walnut lightens with exposure while cherry darkens

Actually American Black walnut will darken as well. Some european walnuts will lighten. The variable here is whether a top coat sealer has been applied.

[otenmsa]

I mean the part exposed is darker. As the grilles were always used, the part covered by grilles is lighter. I'd like to even it out, is there a way?

['cisco]

I had this happen to my pair of PMC GB1 i's in Cherry finish. It was not in direct sunlight, just ambient light in the room. It created a "bikini" like effect with the grills on.
Luckily, I noticed this early enough and the grills were removed permanently ......the "bikini" lines slowly disappeared in a few months.