I currently am suffering under the use of a pissy bluetooth low bandwidth speaker set, namely sony SRS-XB23. Which have extra double nastiness because they appear to use some kind of post-effect and tuned resonator chamber to provide more bass frequencies than the drivers can actually directly emit. The bass is phantom bass, and does not propagate nearly as strongly as it sounds through walls and doors.

I can feel the difference, because there's something somehow wrong... probably the fact that the bass frequencies my ears are being fooled into hearing, are not travelling through my desk nearly as much as their volume suggests they should be.