Audio geek points for using passive radiators…
Audio geek fail however in that geeks know do the same thing as vents, and non-audio-geeks won’t know what passive radiators are… audio geek eyebrow raiser also, since they are so small (and therefore low moving mass), they won’t establish a low tuning frequency – a vent would also be more efficient in this application.  Sad to say, the use of passive radiators has been done in the past to pull a bit if a scam – people see the drone cones and think they’ve got more speakers than they’ve really got.

Maybe it’s just the pictures in my screen – but from a domestics standpoint, these won’t be the speakers your wife says “Oh, those are pleasantly acceptable”.  They still look entirely and unmistakeably like plain ‘ol black computer speakers… a little red isn’t enough lipstick on the pig to satiate a housewife who was picky enough to complain about your current set of speakers to begin with.  She’ll see these as every bit as equal to whatever you have now.