I have apair of 4311s I ppurchased new in '71 or '72. They have seen moderate to light use and lots of storage time. The terminal posts on one are lose and the grills are in pretty poor shape. The foam seems to be rotten.
Is there any guide as to what I need to know before I dig in? What are the got ya's? Basically where do I start and what do I watch out for?
Thanks for any and all help.