if its just drivers, yung surround ang nadudurog if its foam, though this is easily replaced as long as standard ang size... medjo mahirap maghanap ng weird size ng surrounds.. like 7 and 9, 11, 13 inches.
if its a box speaker with capacitors, then the capacitors may need replacing.
It also depends on loudspeakers itself, my KEF105.2 speakers were made in 1970 and the only parts that needing repairing was a loose surround.
Some speakers (tweeters) are ferrofluid cooled, these have a tendency to dry up and render the tweeters useless.
I used my KEF for about ten years, though I cant say na nagbago ang tunog niya.. if ever it did, it did not bother me or di ko napansin.
Good day Gurus...
Just an inquiry,
does age matters when it comes to speakers?
Nagbabago ba ang tunog nya when it ages, and is it safe to buy an "old" set of speakers
let's say 5 years or 10 years old na ito...?
Hindi pa ba prone sa sayad or humihiwalay ang pagkakadikit ng mga materials nya as it ages..?
Kind regards,
ABC