I'm doing research on Vandersteen used speakers and came across someone selling their 5a. Someone asked if the batteries have ever been changed? Forgive me if this a dumb question,but .... Are there batteries to be changed? Is there other maintenance parts that need maintaining? I know that the surrounds in some speakers wear out after time.....Do higher end speakers need routine maintenance? And if so, can it be done local or do they have to be shipped back to the manufacturer? I know upgrades to be sent back, i'm just trying to understand if buying any used speaker with a little age is going to have additional expense?
Gary