Speaker Lifespan

It depends on the material being used, especially for the driver cone surround. Foam is (albeit musical sounding) very susceptible to rot, while rubber is more durable. I think the Xover components are not subject to degradation, because of the relatively low voltage of the signals and the low ambient temperature.

Chris

How about Goodmans Axiom 80s
Despite their really low power handling most are still going strong after nearly 40 years-and in many ways they are still the best sounding speaker ever.

My ultralinears in the garage are still going strong. They were purchased in 1976. I had to replace the foam on the woofers 10 years ago but that's it and they still sound pretty good.

loon

depends on designs, but I have a 1895 edison horn that still works ;) Caps change values with age,surrounds rot, paper surrounds last a long time but driver cones get brittle with age. I have had more than a few voice coils drive right through paper cones on vintage drivers.But over all a good design should last 25 years or longer with repairs. 10-15 without service.

Thanks all, I guess I will them them for some time.