On Tuesday, September 19, 2017 at 9:19:37 PM UTC-4, micky wrote:
I've been reading about a car like mine and the owner says that the rear
subwoofer is "blown". I always took that to refer to an electrical
open. Does that ever happen?

But does it also refer to a torn surround?

Any kind of failure falls under the description of "blown".

Open, intermittent, shorted, or melted/shifted voice coil or weak or damaged surrounds all fit that description.

"Blown" has become a catch-all for *any* kind of failure, even medical: "I blew my back out swing a bat. I won't be able to play for several days"..