✔ 最佳答案
There are many speakers still in use that were manufactured in the 1960s (or even before), have been used regularly and still work fine. I have a pair of active monitors that are about 10 years old now, and a pair of hifi speakers that are over thirty years old and they work as well as they did when they were new. There is no reason why age or use should degrade a speaker in any noticeable way.
Obviously, speakers can be damaged by being mis-used or stored badlythough. Check with the seller that they work perfectly (they're no use if they don't). Even then, you're taking a risk. Without actually seeing and checking them it's really hard to say what to do. You could end up with a bargain, or find you've just wasted your money.