Don't see that as a huge problem though, this is an active all in one speaker and with a bass control switch built in, not sure does it comes with app or so to do room EQ, but IMO using an anechoic flat speaker in a typical room should produce to preferred slight downward slope unless you have a real tiny room (like mine). and in any room any speaker will get quite some erratic room modes here and there, having a dropping bass response <100hz might not get the very elevated bass at the room mode peak, but you also mute the room mode null anyway, so it's kind of a give or take.Not by half. Constant flat power response below ca. 100-150 Hz. Also that will produce too much bass in "typical" room, but not way too much almost everywhere. Factory setting producing flat axial and rising power towards sub bass is designed for use with room EQ DSP or bass tilt adjustment with dip switches etc, but that is limiting as passive speaker because both listener and speaker are forced away from the walls. One may listen outdoors in the middle of field, but clear majority has some room gain at LF.
IMO an anechoic flat speaker is always easier to deal with/optimize with sub than one with some design assumption of my use case and tweak here and there