The larger the cabinet, the deeper they can go. The specifications themselves are confusing, and don't really tell you anything about the speaker.
Overall Frequency Response 47Hz - 25kHz
Lower -3dB Limit 57Hz
Upper -3dB Limit 24kHz
All it's saying is that its -3db at 57hz and 24khz, but in between it could be +-15db. Highly unlikely, but the specs are misleading anyways.