How long do speakers last?


I have 15 year old speakers and I cannot remove the sock but they work fine. Do I have to worry about woofers deteriorating or are there electronics (crossover?) inside which won't last forever? I don't use these much.
samuellaudio
For example;I have had my JBL 4340's since 1974 and they are as new as the day I purchased them.
If they are exposed to direct sunlight it can damage the rubber or foam surround and or if not kept in dry storage can reduce their life expectancy. Otherwise they can last for a very long time.