BryantH

I've had the same problem. Speaker has only been outside a couple of times (when taken camping, but even then, kept inside a large tent, and never out in the elements). Finally a couple of days ago I pulled out an old library card (hard plastic, just like a credit care or gift card) and used that to scrape off most of the coating. Still left a bit that is almost impossible to remove, but much better than it was. I'll try orange oil to try and remove the rest of it. Sigh...