Regardless of whether a particular individual can hear it, the bass response is not there. The frequency range simply doesn't go that low. I can readily hear it, and any discerning listener can hear it. It's not needed for vocals or piano or most lead instruments, but if you are reproducing bass sounds, such as bass guitar, it is simply not there. You will need a sub of some sort for a full band or combo sound.
Even the factory demos recommend and show it being used with a sub in such situations.