Martin Logan Aerius i problem

I had the same problem with my ML monoliths when I first purchased them. Read the serial numbers off the panels, call Martin Logan, ask to speak with Jim Powers in service, and explain the problem. Most likely you will need to replace the panels. If you bought them from someone in a high humidity area, this can cause the panels to degrade more rapidly than in dryer climates. If the panels are reasonably new, it has been my experience that ML will stand behind them and do something for you very reasonably. When it happened to me, my panels were over 6 years old and needed to be replaced anyway. Once replaced, it's like a new speaker, particularly now that they have made some advancements in the panels themselves.