A subwoofer is strongly recommended. Multiple reviews say the speaker works much better when crossed around 80 to 120 Hz, which improves bass weight, detail retention, and dynamic composure.
The large subwoofer is widely praised for deep, forceful bass, but several reviewers also note that it can be imprecise, overbearing, or a little flappy at extremes.
The compact subwoofer is a major reason to choose the Plus model because it adds real punch and fullness, but deep sub-bass remains limited and placement has a large effect on results.
The subwoofer is a major selling point, with repeated praise for punch, depth, and room-filling low end, though one review says the deepest rumble is still limited.
The included passive subwoofer adds real punch and helps the Nova S50 sound bigger than it looks. Its tuning is not especially tight, however, and several reviewers said bass can become too heavy, boomy, or crackly.
Bass is the product’s most common criticism, and many reviewers said a separate Bose subwoofer is the clearest upgrade if you want real low-end impact.
Bass is the main compromise: there is no dedicated subwoofer and no external sub connection, so low-end impact is limited even if bass reflex tuning adds some punch.