They can’t , I have owned a bunch of these full range drivers, which they are not, and are not linear they may get high frequencies to 16 khz if a electric field coil driver much much better ,but still need a powered sub to be a full range speaker. And with single drivers non field coil they cannot play with higher SPL levels at all they become peaky in the upper midrange ,included several mentioned which I owned,but will not disparage them ,and start distorting at around 90 db they can sound pleasant but still no bass to 40hz
a big Electrostatic speaker like Sound Labs is the-only exception stretching the term single driver ,and needs lots of Power to play loud and they are Big speakers but sound great.