A friend of mine has a pair of these speakers that he acquired a couple of years ago. They worked fully at the time. He had no place to use them until now and in hooking them up, we noticed that the tweeter was not playing. We ran test tones to each speaker and the mid and low range on one speaker were not playing the tones at nearly the same level as the other speaker. They sounded as though they had been covered with a pillow.
The speakers were likely not stored in a proper location, and were likely submitted to a fairly large amount of humidity through a couple of damp and hot Virginia summers.
Since there is an issue with all three drivers, is it possible that this is an electronics issue, or is it likely that that environmental conditions have affected the drivers themselves? Could an issue with the tweeter affect the signal that the other two drivers are getting?
Does anyone know of avenues to pursue replacement parts for Cellestion speakers? These were built in 1977.