Do Martin Logan ESP sound deteriorate?

[Liquid Air]

I have a question if there's any Martin Logan experts out there. My Martin Logan ESP don't seem to sound nearly as good as they used to. Do the electrostatic panels deteriorate over time? I dust them fequently, non smoking home but when I just play them in stereo 2 channel they don't sound anywhere near what they used to

 

[TLS Guy]

I have a question if there's any Martin Logan experts out there. My Martin Logan ESP don't seem to sound nearly as good as they used to. Do the electrostatic panels deteriorate over time? I dust them fequently, non smoking home but when I just play them in stereo 2 channel they don't sound anywhere near what they used to

Electrostatic panels certainly can and do deteriorate over time, especially if driven hard, the panels loose their correct tension.

Electrostatic speakers are much more problematic over time than moving coil ones. That is a major reason they have never become mainstream. They can even become punctured by a spark, but when that occurs the audible results afterwards make the speakers unlistenable.