Originally Posted by jackbuzz
I wouldn't worry too much about the longevity of a paper cone.
I have 2 JBL 15" D130s all original (not subs/Grateful Dead Wall of Sound) that are 40yrs old with no signs of deterioration, the cloth surround is the only thing treated.
These have been played hard and regularly since the early 70's.
Surrounds will fail long before cone on most speakers.
Also have either been in a basement or the lower level of a tri-level the whole time.
Here's a nice example of what can happen to a paper woofer:
I'd say it's unusual to see one last as long as yours has. But I'm glad it did.
However, I do realize that newer paper cones are reinforced and improved, so they are more durable. I've seen some rather hi-end speakers using paper cones.
I do remember seeing more than a handfull of blown/damaged/torn paper speakers growing up, although those were mainly in car sound systems. But I had a friend who accidentally hit his old speaker woof (15" in the 70's style large kabuki style floor standing box-Sansui) moving a table and it tore the cone up. Yes paper woofs can also be reconed/foamed too.
But I'm sure the argument can be made either way.