I know with the N802, there is a cap thing that holds the tweeter in place during shipment. It is behind the midrange and tweeter. This might be the cause of the noise. If you already know what I am talking about and took care of it, no problem. If you arent sure, please feel free to email me and I can try to help you out.
N802 possible tweeter buzz
What is the best way to check out a pair of N802's I have just recieved. My wife and I are hearing a buzz in the tweeters at a certain frequency. Just purchased from an audiogoner.What is the cost to repair? does anyone know, and is this something a handy person could do? Thanks for input.