One nice thing about my ZU's is that you can purchase upgraded drivers. I purchased my Omen Defs in 2012 (update B) and they have the updated tweeter. Since, ZU has released upgraded larger drivers as well. Outside a light dusting every now and then, the drivers look and feel as good as new with no deterioration (at least from what I see or hear).
How long do high quality speakers "last"
I am the original owner of a pair of ProAc Response 2 speakers. They are almost 7 years old, but have never been driven excessively hard. How long (i.e. useful lifespan in years) can I expect these speakers to "last" (i.e. no significant sonic degradation) if I care for them carefully? When they do start to degrade, what mechanical failures and sonic degradations can I expect to occur? Thanks in advance!!!