I just got a set of ADS L520s delivered today. And, they're in good condition. But in the UPS shipping, the grills, which were dust laden, bent in a bit (metal grills) and they touched the surface of the tweeters, more so in one case....leaving an lattice like imprint of dust stuck to the surface.
I tried to use, gently, a light wet sponge to clear this off, which worked on the one, but the other still has some dust patterns clinging to it.
The 'glossy' surface of these tweeters make me a little nervous because I am not sure that even a slightly moist sponge might not remove some coating.
Can anyone who knows these suggest a safe agent to use to get off the rest of the material.
So far, though, they sound just fine even as is? Very detailed, airy and open throughout the entire musical spectrum.