there is a switch on the board inside the speaker I was told it is a reset. Any idea how it is done?Swap the panel see if the problem follows, if it does, then most likely the panel has gone bad. 1. Unplug speaker from power overnight make sure it's fully discharged, then vacuum thoroughly. If that don't fix it, take the panel give a good shower. If that still don't work, then time to buy new panel or have it recondition. Do contact Martin Logan first on how to remove panel and troubleshoot.