Has anyone removed tarnish from Gallo tweeter?

Not according to Gallo, Joebone. It happens to all the CDT tweeters in due time.

Just checked the (growing) blotches on mine. They don't look a thing like fingerprints. The tweeters will be uniformly brown before long, just like the color of my Due's. Dave

Sorry to tell you, but it will get worse, although I don't think they're fingerprints. All Gallo tweeters do this -- I've had the original sphericals, the Due's, and now the Ref 3s. At least they ultimately get a consistent, all-over tarnish (sounds better if you call it patina) instead of the earlier blotchy look. If you can find any way to reverse this, please let us know. Since I was expecting it, it didn't much bother me, but I agree that it doesn't look great. Dave

Might work. Somebody else go first. I'd sure hate to inadvertently remove something vital to the way these things sound.

Viridian, this may be the best-sounding tweeter out there. As it stands, there's no crossover between the mids and the tweeter, so what you're suggesting is a big step backward.

Sorry I forgot the smiley and I'm not sure you're kidding now. As I understand it, though, there's no crossover between mids and highs and the woofer is crossed over at 150 Hz to the mids. Could be wrong. It's been known to happen. :-)
Dave

Nope, no warning. Since all the Gallo CDT tweets do it, they (Gallo) clearly know it's going to happen and don't consider it a "defect." Not the best in customer relations, I agree.