Subwoofers are not about "thunderous bass". Properly integrated with the mains, subwofer
S (insisting on the plural, as in "more than one", and on

roperly integrated" ), provide a level of fidelity that is very difficult if not impossible to achieve without.
and ...
Jazz has bass, lot of it. I mean a drums set will not be heard as such if bass is not properly reproduced ... Or an upright bass without ... bass?? A tuba.. without .. bass? A Piano ... without bass?? Hammond B-3 Organ? without bass... ?? I am not sure .. they lack that .. maybe not 20 Hz , then again some piano do... but the nethger regions dow50 to 150 must be well covered.. else ...
As for Classical with no bass.. Not organ piece.. Take a piano concerto, say Rachmaninoff's any of his pieces. if you don't go below 60 Hz with cleanliness and authority? You're missing a lot.. Or the Edgard Cello Concert in E Minor with no bass .. if you don't go below 100 Hz with any authority you would not be listening to a cello...
Real music requires clean, bass .. yeah even rap

..
More about the OP ... later, need to work
Peace.