If you replace the capacitors be careful about replacing them with any later, fancy types. The tendency these days is to replace older vintage types with modern capacitor types that are "faster" and able to pass higher energy peaks thru to the tweeter and thus cause damage to the tweeter. Many times we know of people who have replaced their caps with polyprop types and a few weeks later ask why their "...tweets have fried..."!! You should be able to read the brand and value off of the existing one and try and source NOS or equivalent replacement. I've emailed you some info on the B139's. Regards, Richard.
