Loose screws in tube.
I just got my BTA6250D and it rattled. Tipped it over and shook a small phillips screw out of it. Set it down and it started another rattle. Shook it again till a second phillips screw fell out. Should I be concerned or these just extra screws that the speaker magnet picked up? Should I open it up and verify nothing is missing screws or there are more stuck waiting to drop?