How low can one hear Huh?? Say again

If anyone is interested.The review in question is in stereotimes.com
Go to the bottom of the page to the archive link.
The review is of the Xindak FP-1 speaker cable.

sorry..its the Xindak FS-1 speaker cable.
The FP-1 is a power cord.

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).

Regardless of whether any individual hears them or not, the equipment that produces these sounds is typically at its extreme edge of its performance capability to respond as low as it does. If it responds lower than we need it to, then theory would suggest that it would be more linear and within its capability to produce sound that is above its lower limits. So, in theory, it could be more linear and more in control, and better sounding in general, at frequencies above its lower limit, and thus could give better performance in whatever bass frequencies that we can hear, whatever those frequencies may be for a given individual.

How about that? An argument in favor of deep bass from TWL!!!

Gregm,
You don't need to have space to allow the whole wave length in order to hear bass. Otherwise, there is no headphone that can reproduce anything below 4-5KHz.