Will the sound quality deminish over the years?


I bought a set of used B&W 802N and see a lot of nice speakers for sale here. I wondered if the age of the speaker would cause the sound to degrade. Sure, I have heard people state how great their 40 yo speakers sound, but could that be like shocks on a car? You won't notice how much less they are until it is changed.Just a curious thought as to 10 - 20 years down the road, can I expect the speakers to sound as good, especially when laying out a lot of quag.
lmr
The sound of the system can change quite a bit day to day and we often don't notice. How can you expect an audiophile who's constantly changing things around to notice a change in speakers over a very long time? Doesn't make sense. He will have replaced all his cables and all his electronics at least twice! Hel-loo!
I guess what started it was watching how to realign a coil video. It made me think of what else could happen including maybe the crossovers getting out of spec through corrosion or heat.Seeing how cartridges have a lifespan of 2000 hours, if speakers degraded, how would one know how old they actually were? Gathering by some of the last responses, I take it,not to worry if a speaker is 20-30 years old.
"11-10-14: Mceljo
Zd542 - I didn't suggest that the change wasn't real. I did, however suggest that when his perspective changed he no longer viewed the Marantz as lacking highs, but rather have a more full mid and bass range. The sound of the Marantz was constant, but his assumption about it changed resulting in a different experience."

I think you may be right. Reading Nonoise's posts, I thought he was kidding. Reading them again, I'm not so shure. If he was being serious, I agree with you.