My Shahinian Diapasons are coming up on 20 years old. It was only this year that I had to replace the passive radiators. When mine were built the passives used a foam type surround. It took about 19 years for them to distintegrate. Fortunately Shahinian eventually went to passives that used a hybrid rubber surround. I bought these and replaced them myself. The woofers already used this type of surround and show no sign of deterioration.
I think a well made speaker should have every chance of lasting a good long time. As long as the Avalons had not been misused then they'd still be considered youngsters at 7 years.
BTW, in all that time I have yet to hear any speaker up to the price range of my Diapasons that I'd want to replace them with. I guess if you find a pair of speakers you love they also have every chance of still sounding great years later.
I think a well made speaker should have every chance of lasting a good long time. As long as the Avalons had not been misused then they'd still be considered youngsters at 7 years.
BTW, in all that time I have yet to hear any speaker up to the price range of my Diapasons that I'd want to replace them with. I guess if you find a pair of speakers you love they also have every chance of still sounding great years later.