Guest Posted March 21, 2002 Report Share Posted March 21, 2002 They will probably last longer than you do. Link to comment Share on other sites More sharing options...
thiptoman Posted March 22, 2002 Report Share Posted March 22, 2002 What is the useful lifespan of the rubber surrounds used in these large AR speakers? I've been told that foam surrounds will last anywhere from 5,10 or 15 years.Anyone who has experienced how rubber surrounds deteriorate over the years please comment. Link to comment Share on other sites More sharing options...
Guest rickcee Posted March 25, 2002 Report Share Posted March 25, 2002 Hi The good 'ole Dynaco 25 model had rubber surrounds (late '69 - '75 ERA ) I see no deterioration at all in mine. Probably the problem with foam was not known untill '80 or so - still some expensive speakers still use int -- Bose 901 - 9 small speakers in each cabinet - do they still use the cheesy foam ? ?At least to some extent AR recognized and corrected the problem. Thou you might say that 15 or 20 years of designed 'lifetime' is O.K.. Except to the 'fans '. Link to comment Share on other sites More sharing options...
Guest Posted March 25, 2002 Report Share Posted March 25, 2002 Modern synthetic rubber surrounds should last longer than the useful life of the woofer's other moving parts [cone, spider]. "Natural" rubber surrounds or those made from a blend will have a more limited lifespan, maybe 25-30 years. I've already started to see a lot of rubber surrounds from some mid-70's drivers [Phillips, KEF] starting to harden and crack. Link to comment Share on other sites More sharing options...
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