My take is that Noble100 (Tim) is the "smartest man in the village" with educated insight. I look to see more of his posts. If the penchant of the OP is excellent bass response in a small speaker, I will offer two alternatives: Joseph Audio Pulsars or Dynaudio C1 speakers... pretty flat down to the low 40 hz realm. I recall hearing the Pulsars at an audio show driven by a Rogers tube amp (!) and the bass response from these stand mount speakers was astounding, with gut-wrenching bass response. Ditto for Dyn's. The JA Pearls go down to 25 hz, but are +$20K and are hulkingly large speakers.
As Tim cogently informs us, your goals of having smallish speakers with the bass response that is your goal defies the laws of physics. I personally would not need a subwoofer for the Pulsars or C1's in a modestly-sized room as I am a lover of sublime mid-range response, but the addition of one or two REL subs to a pair of fine stand mount speakers will fulfill your needs very nicely, but still get you response only to the mid 30s hz. I use a REL T-7 with my Spatial Audio M4 Holograms and it rounds out the LF response extremely well.
As Tim cogently informs us, your goals of having smallish speakers with the bass response that is your goal defies the laws of physics. I personally would not need a subwoofer for the Pulsars or C1's in a modestly-sized room as I am a lover of sublime mid-range response, but the addition of one or two REL subs to a pair of fine stand mount speakers will fulfill your needs very nicely, but still get you response only to the mid 30s hz. I use a REL T-7 with my Spatial Audio M4 Holograms and it rounds out the LF response extremely well.