Lowest bass string is 41.2Hz. 5 or 6 string bass guitars are used for easy of playing only. Piano goes down to 27Hz (A) but it is not very often used. There are organs and big drums but there are also neighbors.
My speakers go down to 30Hz while my room amplifies 38Hz (1150/15'/2=38Hz) - no problem with 41.2Hz. If I decide to get sub it will be one like JL Fathom 113 that self adjusts/equalize itself with microphone.
My speakers could possibly go lower but most likely were tuned for lowest distortions and not for the extension. Quality of bass (attack, decay, tone etc) is more important than quantity or extension.
My speakers go down to 30Hz while my room amplifies 38Hz (1150/15'/2=38Hz) - no problem with 41.2Hz. If I decide to get sub it will be one like JL Fathom 113 that self adjusts/equalize itself with microphone.
My speakers could possibly go lower but most likely were tuned for lowest distortions and not for the extension. Quality of bass (attack, decay, tone etc) is more important than quantity or extension.