Why do you want a revealing subwoofer? Your your main speakers should be able to handle lower level bass detail and then the sub fills everything out. Maybe you have tiny subwoofer speakers. No less than 12 inch diameter should be used for a sub.
Subs became popular when the bass quality of Main speakers began to deteriorate in the industry because the driver sizes were reduced. So now people bought subwoofers. Older speakers you’ll notice have larger Drive sizes.