Living Voice Auditoriums Series woofer unit edge
I always wonder will there be any problem about the LV woofer unit with foam material which will not last long ( may be 7-10 years due to foam material is chemically unstable and becomes dry and brittle over time ) compare with rubber edge like others woofer unit?
Have you noticed a change in sound or is this a 'what if' question?
Polyurethane foam technology has come a long way since the 1960s/1970s. I expect modern compounds will be properly stabilised and will last as long as a rubber surround.
Neg Rep for sale - £10 a shot.