Almost all ESL manufacturers now have an auto time out feature built into their speakers (e.g. 5 min of no signal, speakers turn off) to fight the dust buildup problem. M-L and Audiostatic both use such circuits in their speakers. The longevity of the panels is thereby vastly increased.
Direct sunlight, even weaker afternoon sunlight, will damage your speakers' membranes. UV light and plastic do not mix!
Direct sunlight, even weaker afternoon sunlight, will damage your speakers' membranes. UV light and plastic do not mix!