I am saying exactly that , from experience with an upstairs neighbor with a subwoofer in a concrete building . Something about very low frequencies being directly coupled to the floor . I ' m sure this depends on the building though , resonant frequencies and whatnot . Maybe borrow one or get one from somewhere with a return policy and actually go downstairs while it ' s playing to see ? It was absolutely hellish in my case , no place to hide , somehow the soundproofing which was great at cutting normal household noises made the bass travel across the whole apartment . When he wasn ' t using the subwoofer , and just the regular speakers , I would hear the sound coming out of his windows and into mine before I ' d hear it through the ceiling .