Jake, in case you missed it, I'm the reviewer. From the review:
Quote:
The internal volume of the cabinet is limited through the presence of an internal sheet of MDF that completely blocks off slightly more than the bottom half of the speaker. While I am sure this ensures the proper box volume for the drivers to get the best extension half an octave above free air driver resonance and smooth roll off below it as per the engineers design goals, it also transforms the RS450 into a bookshelf speaker in a floorstanding cabinet.
I hope this helps.
