Bbro,
The DWM's are usually used against a side wall or another barrier and that provides significant bass reinforcement. Acoustically, it doubles with the width of the baffle, which lowers Fequal, the point at which the 6 dB/octave dipole rolloff begins. You can hear the same effect by moving any Maggie up to touch the wall. In addition, if they're close to the main speakers, there should be some mutual coupling of the baffles. So the DWM's can be smaller than the floor standers for a given amount of bass.
The DWM's are usually used against a side wall or another barrier and that provides significant bass reinforcement. Acoustically, it doubles with the width of the baffle, which lowers Fequal, the point at which the 6 dB/octave dipole rolloff begins. You can hear the same effect by moving any Maggie up to touch the wall. In addition, if they're close to the main speakers, there should be some mutual coupling of the baffles. So the DWM's can be smaller than the floor standers for a given amount of bass.