This is where it gets a bit more technical; our support team member mistaked the speaker for SOUNDBOKS GO (our other version), where we have pushed out an audio update. In that audio update, there is implemented a tweeter protection mechanism, that limits the volume increase on the tweeter when it gets too hot. That can in some cases limit the dB a tiny bit (we're talking something that's not hearable), but in some cases there is a calibration error on the base temperature of the tweeter, making it think it is way hotter than it is - which can make it dampen too much. That is a bug, and we're working on fixing that - but again, that is on the SOUNDBOKS GO, and has nothing to do with the SOUNDBOKS Gen 3 that the author has.
capableweb|3 years ago
Hope you/author manage to figure out the issue in the end.