Neumann microphones are my foremost interest, and I am delighted to be here.
I have a pair of KM 84, which are my first vintage microphones. My beginner's question is , how often , and how regularly should I send them to inspection ? Or,do you recommend to send them only when they have some noticeable problem ? I was wondering if these older mikes do need any regular preventive checks / i.e. 2 x a year etc /