but I'm mobile. I listen on my way to work , so as I walk to the streetcar, on the streetcar, on the subway and then walkign the other end. The problem is the same no matter where I am geographically.
The only thought I've had is could temperature have an effect? It was plus 30 degrees C when I first started using them. Now its minus twenty. Maybe the range has been slowly decreasing as the temperature has, now its reached a critical level?