I remember this post a while ago. 2 thoughts
1 It's not blown at all, the NC normally closed finger in the jack is
failing to reclose properly when the plug is pulled out. Therefore the
speaker is poorly connected or not at all.
2 I have seen rare and stupid designs where the speaker has a positive
voltage ias on it and you blew something else out.
Or, the speaker died coincedentally?
Sorry I don't have more...
Oh, what is swan.ml.org, another list?
Pres Waterman N2PW
c/o Patchogue Motors, Inc.
Ford and Kia dealer