I've owned and listened to many speakers and subs. The main objective of speakers and subs is to REPRODUCE the sounds we actually hear in REAL LIFE.
I'm sure we've all heard many real life sounds in our years.
If you've been to commercial cineplexes/ movie theaters, you've heard sound systems that cost quite a few dollars that most people cannot afford. So you do know a few sounds.
You do know what Crystal Clear sound is like. If you hear something in real life that doesn't sound CLEAR, you will know it instantly.
As for subwoofers and the frequencies below 100Hz, how much wall-shaking and earthquake sounds do you want?