I have a Stern Meteor that sounds like it's got a rolled up sock in front of the speaker. Sounds are dull and muted. Very little treble/high end, as if there was a low pass filter on it. It gets loud- overall amplitude isn't the problem. It just sounds really dull and muddy, without brightness.
Sounds themselves are fine. Everything plays when and how it is supposed to, but the quality is very poor.
Has been re-capped and the problem isn't the speaker itself. I could start tearing apart the audio amplifier circuit soon but I figured I would ping the crowd here first. Hell, maybe its supposed to sound like that.