After reading that paper from Genelec, where is said that..." below 16 Hz, Not audible for humans." I have some books here dealing with the tuning of musical instruments and they state 15 Hz is the LOWEST AUDIBLE frequency for humans to be perceived as a CONTINUOUS, NON BEATING sound".
So lower than 15 Hz is still heard, but as a beat.
Also, very funny seeing them showing tables starting from 65 m2, 13x5 or 8x8 room !
Edit: I was warned by JiiPee that it is volume and not surface, better matching home room sizes. Thank you. Where can my glasses have got to...?