What is the music that digs deepest (generally)? Classical music and techno ... can I imagine but regular pop, jazz, rock, blues down to 20 Hz? Does it get even below 30 Hz, (usually)?
Home theater, on the other hand, I can understand.
Then what you mention to weigh in, neighbors (who can get annoyed at bass even in the higher registers).
Suspect it's like power on an amp. You want a headroom (for safety's sake).
Edit:
Then everyone knows that even if a small bookshelf speaker can dig a little deep, it does not mean that it will sound particularly good in those bass regions. Especially not if it has a bass driver that in itself has a high distortion to start with. It may sound.. hm ok at low volume. At best ok on normal listening volume but damn bad distorting on higher volume. But that's something most people quickly figure out and add one or more subwoffers.
.... There is something I point out here:
There is no shortcut to the perfect HiFi sound so ...he he ..:D.....o_O Edit: In fact, a friend when he was in his 20s received an ultimatum from his then-girlfriend, who was jealous. Zappa collection (which should be mentioned he spent the most time on) or more time with his girlfriend ... he...
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Consider that distance, the placement of the small speakers and the sofa ( it's not my stuff or my listening room but people can do exactly what they want as long as they are happy and cheerful

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