In order to "hear" 30Hz etc sound, you have to allow for the wave length: ~38'. Usually we FEEL the direct sound of 30Hz and we hear the reflected sound (i.e. somewhat later than it occurs).
As to the reviewer, I couldn't say. 30Hz is not that low, and there's some music content there, sometimes (not much, but still). Apparently, and fortunately, he's never experienced an earthquake. That's lower than 16Hz (a large organ will produce 16Hz).
Generally speaking we DO perceive low bass sounds. They are unpleasant (to me).
As to the reviewer, I couldn't say. 30Hz is not that low, and there's some music content there, sometimes (not much, but still). Apparently, and fortunately, he's never experienced an earthquake. That's lower than 16Hz (a large organ will produce 16Hz).
Generally speaking we DO perceive low bass sounds. They are unpleasant (to me).